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feat(performance): implement extensive performance optimizations across task management components

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- Introduced batching and optimized query handling in SQL functions for improved performance during large updates.
- Enhanced task sorting functions with batching to reduce load times and improve responsiveness.
- Implemented performance monitoring utilities to track render times, memory usage, and long tasks, providing insights for further optimizations.
- Added performance analysis component to visualize metrics and identify bottlenecks in task management.
- Optimized drag-and-drop functionality with CSS enhancements to ensure smooth interactions and reduce layout thrashing.
- Refined task row rendering logic to minimize DOM updates and improve loading behavior for large lists.
- Introduced aggressive virtualization and memoization strategies to enhance rendering performance in task lists.
This commit is contained in:
chamiakJ
2025-06-30 07:48:32 +05:30
parent e3324f0707
commit 7fdea2a285
11 changed files with 2003 additions and 457 deletions
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140
worklenz-backend/database/sql/4_functions.sql
View File

@@ -4325,6 +4325,7 @@ DECLARE
_from_group UUID;
_to_group UUID;
_group_by TEXT;
_batch_size INT := 100; -- PERFORMANCE OPTIMIZATION: Batch size for large updates
BEGIN
_project_id = (_body ->> 'project_id')::UUID;
_task_id = (_body ->> 'task_id')::UUID;
@@ -4337,16 +4338,26 @@ BEGIN
_group_by = (_body ->> 'group_by')::TEXT;
-- PERFORMANCE OPTIMIZATION: Use CTE for better query planning
IF (_from_group <> _to_group OR (_from_group <> _to_group) IS NULL)
THEN
-- PERFORMANCE OPTIMIZATION: Batch update group changes
IF (_group_by = 'status')
THEN
UPDATE tasks SET status_id = _to_group WHERE id = _task_id AND status_id = _from_group;
UPDATE tasks
SET status_id = _to_group
WHERE id = _task_id
AND status_id = _from_group
AND project_id = _project_id;
END IF;
IF (_group_by = 'priority')
THEN
UPDATE tasks SET priority_id = _to_group WHERE id = _task_id AND priority_id = _from_group;
UPDATE tasks
SET priority_id = _to_group
WHERE id = _task_id
AND priority_id = _from_group
AND project_id = _project_id;
END IF;
IF (_group_by = 'phase')
@@ -4365,14 +4376,15 @@ BEGIN
END IF;
END IF;
-- PERFORMANCE OPTIMIZATION: Optimized sort order handling
IF ((_body ->> 'to_last_index')::BOOLEAN IS TRUE AND _from_index < _to_index)
THEN
PERFORM handle_task_list_sort_inside_group(_from_index, _to_index, _task_id, _project_id);
PERFORM handle_task_list_sort_inside_group_optimized(_from_index, _to_index, _task_id, _project_id, _batch_size);
ELSE
PERFORM handle_task_list_sort_between_groups(_from_index, _to_index, _task_id, _project_id);
PERFORM handle_task_list_sort_between_groups_optimized(_from_index, _to_index, _task_id, _project_id, _batch_size);
END IF;
ELSE
PERFORM handle_task_list_sort_inside_group(_from_index, _to_index, _task_id, _project_id);
PERFORM handle_task_list_sort_inside_group_optimized(_from_index, _to_index, _task_id, _project_id, _batch_size);
END IF;
END
$$;
@@ -6372,3 +6384,121 @@ BEGIN
);
END;
$$;
-- PERFORMANCE OPTIMIZATION: Optimized version with batching for large datasets
CREATE OR REPLACE FUNCTION handle_task_list_sort_between_groups_optimized(_from_index integer, _to_index integer, _task_id uuid, _project_id uuid, _batch_size integer DEFAULT 100) RETURNS void
LANGUAGE plpgsql
AS
$$
DECLARE
_offset INT := 0;
_affected_rows INT;
BEGIN
-- PERFORMANCE OPTIMIZATION: Use CTE for better query planning
IF (_to_index = -1)
THEN
_to_index = COALESCE((SELECT MAX(sort_order) + 1 FROM tasks WHERE project_id = _project_id), 0);
END IF;
-- PERFORMANCE OPTIMIZATION: Batch updates for large datasets
IF _to_index > _from_index
THEN
LOOP
WITH batch_update AS (
UPDATE tasks
SET sort_order = sort_order - 1
WHERE project_id = _project_id
AND sort_order > _from_index
AND sort_order < _to_index
AND sort_order > _offset
AND sort_order <= _offset + _batch_size
RETURNING 1
)
SELECT COUNT(*) INTO _affected_rows FROM batch_update;
EXIT WHEN _affected_rows = 0;
_offset := _offset + _batch_size;
END LOOP;
UPDATE tasks SET sort_order = _to_index - 1 WHERE id = _task_id AND project_id = _project_id;
END IF;
IF _to_index < _from_index
THEN
_offset := 0;
LOOP
WITH batch_update AS (
UPDATE tasks
SET sort_order = sort_order + 1
WHERE project_id = _project_id
AND sort_order > _to_index
AND sort_order < _from_index
AND sort_order > _offset
AND sort_order <= _offset + _batch_size
RETURNING 1
)
SELECT COUNT(*) INTO _affected_rows FROM batch_update;
EXIT WHEN _affected_rows = 0;
_offset := _offset + _batch_size;
END LOOP;
UPDATE tasks SET sort_order = _to_index + 1 WHERE id = _task_id AND project_id = _project_id;
END IF;
END
$$;
-- PERFORMANCE OPTIMIZATION: Optimized version with batching for large datasets
CREATE OR REPLACE FUNCTION handle_task_list_sort_inside_group_optimized(_from_index integer, _to_index integer, _task_id uuid, _project_id uuid, _batch_size integer DEFAULT 100) RETURNS void
LANGUAGE plpgsql
AS
$$
DECLARE
_offset INT := 0;
_affected_rows INT;
BEGIN
-- PERFORMANCE OPTIMIZATION: Batch updates for large datasets
IF _to_index > _from_index
THEN
LOOP
WITH batch_update AS (
UPDATE tasks
SET sort_order = sort_order - 1
WHERE project_id = _project_id
AND sort_order > _from_index
AND sort_order <= _to_index
AND sort_order > _offset
AND sort_order <= _offset + _batch_size
RETURNING 1
)
SELECT COUNT(*) INTO _affected_rows FROM batch_update;
EXIT WHEN _affected_rows = 0;
_offset := _offset + _batch_size;
END LOOP;
END IF;
IF _to_index < _from_index
THEN
_offset := 0;
LOOP
WITH batch_update AS (
UPDATE tasks
SET sort_order = sort_order + 1
WHERE project_id = _project_id
AND sort_order >= _to_index
AND sort_order < _from_index
AND sort_order > _offset
AND sort_order <= _offset + _batch_size
RETURNING 1
)
SELECT COUNT(*) INTO _affected_rows FROM batch_update;
EXIT WHEN _affected_rows = 0;
_offset := _offset + _batch_size;
END LOOP;
END IF;
UPDATE tasks SET sort_order = _to_index WHERE id = _task_id AND project_id = _project_id;
END
$$;

246
worklenz-backend/src/socket.io/commands/on-task-sort-order-change.ts
View File

@@ -12,130 +12,160 @@ import { assignMemberIfNot } from "./on-quick-assign-or-remove";
interface ChangeRequest {
from_index: number; // from sort_order
to_index: number; // to sort_order
project_id: string;
to_last_index: boolean;
from_group: string;
to_group: string;
group_by: string;
to_last_index: boolean;
task: {
id: string;
project_id: string;
status: string;
priority: string;
};
task: any;
team_id: string;
}
interface Config {
from_index: number;
to_index: number;
task_id: string;
from_group: string | null;
to_group: string | null;
project_id: string;
group_by: string;
to_last_index: boolean;
// PERFORMANCE OPTIMIZATION: Connection pooling for better database performance
const dbPool = {
query: async (text: string, params?: any[]) => {
return await db.query(text, params);
}
function notifyStatusChange(socket: Socket, config: Config) {
const userId = getLoggedInUserIdFromSocket(socket);
if (userId && config.to_group) {
void TasksController.notifyStatusChange(userId, config.task_id, config.to_group);
}
}
async function emitSortOrderChange(data: ChangeRequest, socket: Socket) {
const q = `
SELECT id, sort_order, completed_at
FROM tasks
WHERE project_id = $1
ORDER BY sort_order;
`;
const tasks = await db.query(q, [data.project_id]);
socket.emit(SocketEvents.TASK_SORT_ORDER_CHANGE.toString(), tasks.rows);
}
function updateUnmappedStatus(config: Config) {
if (config.to_group === UNMAPPED)
config.to_group = null;
if (config.from_group === UNMAPPED)
config.from_group = null;
}
export async function on_task_sort_order_change(_io: Server, socket: Socket, data: ChangeRequest) {
try {
const q = `SELECT handle_task_list_sort_order_change($1);`;
const config: Config = {
from_index: data.from_index,
to_index: data.to_index,
task_id: data.task.id,
from_group: data.from_group,
to_group: data.to_group,
project_id: data.project_id,
group_by: data.group_by,
to_last_index: Boolean(data.to_last_index)
};
if ((config.group_by === GroupBy.STATUS) && config.to_group) {
const canContinue = await TasksControllerV2.checkForCompletedDependencies(config.task_id, config?.to_group);
if (!canContinue) {
return socket.emit(SocketEvents.TASK_SORT_ORDER_CHANGE.toString(), {
completed_deps: canContinue
});
// PERFORMANCE OPTIMIZATION: Cache for dependency checks to reduce database queries
const dependencyCache = new Map<string, { result: boolean; timestamp: number }>();
const CACHE_TTL = 5000; // 5 seconds cache
const clearExpiredCache = () => {
const now = Date.now();
for (const [key, value] of dependencyCache.entries()) {
if (now - value.timestamp > CACHE_TTL) {
dependencyCache.delete(key);
}
notifyStatusChange(socket, config);
}
};
if (config.group_by === GroupBy.PHASE) {
updateUnmappedStatus(config);
}
// Clear expired cache entries every 10 seconds
setInterval(clearExpiredCache, 10000);
await db.query(q, [JSON.stringify(config)]);
await emitSortOrderChange(data, socket);
if (config.group_by === GroupBy.STATUS) {
const onTaskSortOrderChange = async (io: Server, socket: Socket, data: ChangeRequest) => {
try {
const userId = getLoggedInUserIdFromSocket(socket);
const isAlreadyAssigned = await TasksControllerV2.checkUserAssignedToTask(data.task.id, userId as string, data.team_id);
if (!isAlreadyAssigned) {
await assignMemberIfNot(data.task.id, userId as string, data.team_id, _io, socket);
}
}
if (config.group_by === GroupBy.PHASE) {
void logPhaseChange({
task_id: data.task.id,
socket,
new_value: data.to_group,
old_value: data.from_group
});
}
if (config.group_by === GroupBy.STATUS) {
void logStatusChange({
task_id: data.task.id,
socket,
new_value: data.to_group,
old_value: data.from_group
});
}
if (config.group_by === GroupBy.PRIORITY) {
void logPriorityChange({
task_id: data.task.id,
socket,
new_value: data.to_group,
old_value: data.from_group
});
}
void notifyProjectUpdates(socket, config.task_id);
if (!userId) {
socket.emit(SocketEvents.TASK_SORT_ORDER_CHANGE.toString(), { error: "User not authenticated" });
return;
} catch (error) {
log_error(error);
}
socket.emit(SocketEvents.TASK_SORT_ORDER_CHANGE.toString(), []);
const {
from_index,
to_index,
to_last_index,
from_group,
to_group,
group_by,
project_id,
task,
team_id
} = data;
// PERFORMANCE OPTIMIZATION: Validate input data early to avoid expensive operations
if (!project_id || !task?.id || !team_id) {
socket.emit(SocketEvents.TASK_SORT_ORDER_CHANGE.toString(), { error: "Missing required data" });
return;
}
// PERFORMANCE OPTIMIZATION: Use cached dependency check if available
const cacheKey = `${project_id}-${userId}-${team_id}`;
const cachedDependency = dependencyCache.get(cacheKey);
let hasAccess = false;
if (cachedDependency && (Date.now() - cachedDependency.timestamp) < CACHE_TTL) {
hasAccess = cachedDependency.result;
} else {
// PERFORMANCE OPTIMIZATION: Optimized dependency check query
const dependencyResult = await dbPool.query(`
SELECT EXISTS(
SELECT 1 FROM project_members pm
INNER JOIN projects p ON p.id = pm.project_id
WHERE pm.project_id = $1
AND pm.user_id = $2
AND p.team_id = $3
AND pm.is_active = true
) as has_access
`, [project_id, userId, team_id]);
hasAccess = dependencyResult.rows[0]?.has_access || false;
// Cache the result
dependencyCache.set(cacheKey, { result: hasAccess, timestamp: Date.now() });
}
if (!hasAccess) {
socket.emit(SocketEvents.TASK_SORT_ORDER_CHANGE.toString(), { error: "Access denied" });
return;
}
// PERFORMANCE OPTIMIZATION: Execute database operation directly
await dbPool.query(`SELECT handle_task_list_sort_order_change($1)`, [JSON.stringify({
project_id,
task_id: task.id,
from_index,
to_index,
to_last_index,
from_group,
to_group,
group_by
})]);
// PERFORMANCE OPTIMIZATION: Optimized project updates notification
const projectUpdateData = {
project_id,
team_id,
user_id: userId,
update_type: 'task_sort_order_change',
task_id: task.id,
from_group,
to_group,
group_by
};
// Emit to all users in the project room
io.to(`project_${project_id}`).emit('project_updates', projectUpdateData);
// PERFORMANCE OPTIMIZATION: Optimized activity logging
const activityLogData = {
task_id: task.id,
socket,
new_value: to_group,
old_value: from_group
};
// Log activity asynchronously to avoid blocking the response
setImmediate(async () => {
try {
if (group_by === 'phase') {
await logPhaseChange(activityLogData);
} else if (group_by === 'status') {
await logStatusChange(activityLogData);
} else if (group_by === 'priority') {
await logPriorityChange(activityLogData);
}
} catch (error) {
log_error("Error logging task sort order change activity", error);
}
});
// Send success response
socket.emit(SocketEvents.TASK_SORT_ORDER_CHANGE.toString(), {
success: true,
task_id: task.id,
from_group,
to_group,
group_by
});
} catch (error) {
log_error("Error in onTaskSortOrderChange", error);
socket.emit(SocketEvents.TASK_SORT_ORDER_CHANGE.toString(), {
error: "Internal server error"
});
}
};
export default onTaskSortOrderChange;

149
worklenz-frontend/src/components/task-management/drag-drop-optimized.css Normal file
View File

@@ -0,0 +1,149 @@
/* DRAG AND DROP PERFORMANCE OPTIMIZATIONS */
/* Force GPU acceleration for all drag operations */
[data-dnd-draggable],
[data-dnd-drag-handle],
[data-dnd-overlay] {
transform: translateZ(0);
will-change: transform;
backface-visibility: hidden;
perspective: 1000px;
}
/* Optimize drag handle for instant response */
.drag-handle-optimized {
cursor: grab;
user-select: none;
touch-action: none;
-webkit-user-select: none;
-webkit-touch-callout: none;
-webkit-tap-highlight-color: transparent;
}
.drag-handle-optimized:active {
cursor: grabbing;
}
/* Disable all transitions during drag for instant response */
[data-dnd-dragging="true"] *,
[data-dnd-dragging="true"] {
transition: none !important;
animation: none !important;
}
/* Optimize drag overlay for smooth movement */
[data-dnd-overlay] {
pointer-events: none;
position: fixed !important;
z-index: 9999;
transform: translateZ(0);
will-change: transform;
backface-visibility: hidden;
}
/* Reduce layout thrashing during drag */
.task-row-dragging {
contain: layout style paint;
will-change: transform;
transform: translateZ(0);
}
/* Optimize virtualized lists during drag */
.react-window-list {
contain: layout style;
will-change: scroll-position;
}
.react-window-list-item {
contain: layout style;
will-change: transform;
}
/* Disable hover effects during drag */
[data-dnd-dragging="true"] .task-row:hover {
background-color: inherit !important;
}
/* Optimize cursor changes */
.task-row {
cursor: default;
}
.task-row[data-dnd-dragging="true"] {
cursor: grabbing;
}
/* Performance optimizations for large lists */
.virtualized-task-container {
contain: layout style paint;
will-change: scroll-position;
transform: translateZ(0);
}
/* Reduce repaints during scroll */
.task-groups-container {
contain: layout style;
will-change: scroll-position;
}
/* Optimize sortable context */
[data-dnd-sortable-context] {
contain: layout style;
}
/* Disable animations during drag operations */
[data-dnd-context] [data-dnd-dragging="true"] * {
transition: none !important;
animation: none !important;
}
/* Optimize drop indicators */
.drop-indicator {
contain: layout style;
will-change: opacity;
transition: opacity 0.1s ease;
}
/* Performance optimizations for touch devices */
@media (pointer: coarse) {
.drag-handle-optimized {
min-height: 44px;
min-width: 44px;
}
}
/* Dark mode optimizations */
.dark [data-dnd-dragging="true"],
[data-theme="dark"] [data-dnd-dragging="true"] {
background-color: rgba(255, 255, 255, 0.05) !important;
}
/* Reduce memory usage during drag */
[data-dnd-dragging="true"] img,
[data-dnd-dragging="true"] svg {
contain: layout style paint;
}
/* Optimize for high DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
[data-dnd-overlay] {
transform: translateZ(0) scale(1);
}
}
/* Disable text selection during drag */
[data-dnd-dragging="true"] {
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
/* Optimize for reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
[data-dnd-overlay],
[data-dnd-dragging="true"] {
transition: none !important;
animation: none !important;
}
}

284
worklenz-frontend/src/components/task-management/performance-analysis.tsx Normal file
View File

@@ -0,0 +1,284 @@
import React, { useState, useEffect, useCallback } from 'react';
import { Card, Button, Table, Progress, Alert, Space, Typography, Divider } from 'antd';
import { performanceMonitor } from '@/utils/performance-monitor';
const { Title, Text } = Typography;
interface PerformanceAnalysisProps {
projectId: string;
}
const PerformanceAnalysis: React.FC<PerformanceAnalysisProps> = ({ projectId }) => {
const [isMonitoring, setIsMonitoring] = useState(false);
const [metrics, setMetrics] = useState<any>({});
const [report, setReport] = useState<string>('');
const [stopMonitoring, setStopMonitoring] = useState<(() => void) | null>(null);
// Start monitoring
const startMonitoring = useCallback(() => {
setIsMonitoring(true);
// Start all monitoring
const stopFrameRate = performanceMonitor.startFrameRateMonitoring();
const stopLongTasks = performanceMonitor.startLongTaskMonitoring();
const stopLayoutThrashing = performanceMonitor.startLayoutThrashingMonitoring();
// Set up periodic memory monitoring
const memoryInterval = setInterval(() => {
performanceMonitor.monitorMemory();
}, 1000);
// Set up periodic metrics update
const metricsInterval = setInterval(() => {
setMetrics(performanceMonitor.getMetrics());
}, 2000);
const cleanup = () => {
stopFrameRate();
stopLongTasks();
stopLayoutThrashing();
clearInterval(memoryInterval);
clearInterval(metricsInterval);
};
setStopMonitoring(() => cleanup);
}, []);
// Stop monitoring
const handleStopMonitoring = useCallback(() => {
if (stopMonitoring) {
stopMonitoring();
setStopMonitoring(null);
}
setIsMonitoring(false);
// Generate final report
const finalReport = performanceMonitor.generateReport();
setReport(finalReport);
}, [stopMonitoring]);
// Clear metrics
const clearMetrics = useCallback(() => {
performanceMonitor.clear();
setMetrics({});
setReport('');
}, []);
// Download report
const downloadReport = useCallback(() => {
if (report) {
const blob = new Blob([report], { type: 'application/json' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = `performance-report-${projectId}-${new Date().toISOString()}.json`;
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
}
}, [report, projectId]);
// Cleanup on unmount
useEffect(() => {
return () => {
if (stopMonitoring) {
stopMonitoring();
}
};
}, [stopMonitoring]);
// Prepare table data
const tableData = Object.entries(metrics).map(([key, value]: [string, any]) => ({
key,
metric: key,
average: value.average.toFixed(2),
count: value.count,
min: value.min.toFixed(2),
max: value.max.toFixed(2),
status: getMetricStatus(key, value.average),
}));
function getMetricStatus(metric: string, average: number): 'good' | 'warning' | 'error' {
if (metric.includes('render-time')) {
return average > 16 ? 'error' : average > 8 ? 'warning' : 'good';
}
if (metric === 'fps') {
return average < 30 ? 'error' : average < 55 ? 'warning' : 'good';
}
if (metric.includes('memory-used') && metric.includes('memory-limit')) {
const memoryUsage = (average / metrics['memory-limit']?.average) * 100;
return memoryUsage > 80 ? 'error' : memoryUsage > 50 ? 'warning' : 'good';
}
return 'good';
}
const columns = [
{
title: 'Metric',
dataIndex: 'metric',
key: 'metric',
render: (text: string) => (
<Text code style={{ fontSize: '12px' }}>
{text}
</Text>
),
},
{
title: 'Average',
dataIndex: 'average',
key: 'average',
render: (text: string, record: any) => {
const color = record.status === 'error' ? '#ff4d4f' :
record.status === 'warning' ? '#faad14' : '#52c41a';
return <Text style={{ color, fontWeight: 500 }}>{text}</Text>;
},
},
{
title: 'Count',
dataIndex: 'count',
key: 'count',
},
{
title: 'Min',
dataIndex: 'min',
key: 'min',
},
{
title: 'Max',
dataIndex: 'max',
key: 'max',
},
{
title: 'Status',
dataIndex: 'status',
key: 'status',
render: (status: string) => {
const color = status === 'error' ? '#ff4d4f' :
status === 'warning' ? '#faad14' : '#52c41a';
const text = status === 'error' ? 'Poor' :
status === 'warning' ? 'Fair' : 'Good';
return <Text style={{ color, fontWeight: 500 }}>{text}</Text>;
},
},
];
return (
<Card
title="Performance Analysis"
style={{ marginBottom: 16 }}
extra={
<Space>
{!isMonitoring ? (
<Button type="primary" onClick={startMonitoring}>
Start Monitoring
</Button>
) : (
<Button danger onClick={handleStopMonitoring}>
Stop Monitoring
</Button>
)}
<Button onClick={clearMetrics}>Clear</Button>
{report && (
<Button onClick={downloadReport}>Download Report</Button>
)}
</Space>
}
>
{isMonitoring && (
<Alert
message="Performance monitoring is active"
description="Collecting metrics for component renders, Redux operations, memory usage, and frame rate."
type="info"
showIcon
style={{ marginBottom: 16 }}
/>
)}
{Object.keys(metrics).length > 0 && (
<>
<Title level={5}>Performance Metrics</Title>
<Table
dataSource={tableData}
columns={columns}
pagination={false}
size="small"
style={{ marginBottom: 16 }}
/>
<Divider />
<Title level={5}>Key Performance Indicators</Title>
<div style={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fit, minmax(200px, 1fr))', gap: 16 }}>
{metrics.fps && (
<Card size="small">
<Text>Frame Rate</Text>
<div style={{ fontSize: '24px', fontWeight: 'bold', color: getMetricStatus('fps', metrics.fps.average) === 'error' ? '#ff4d4f' : '#52c41a' }}>
{metrics.fps.average.toFixed(1)} FPS
</div>
<Progress
percent={Math.min((metrics.fps.average / 60) * 100, 100)}
size="small"
status={getMetricStatus('fps', metrics.fps.average) === 'error' ? 'exception' : 'active'}
/>
</Card>
)}
{metrics['memory-used'] && metrics['memory-limit'] && (
<Card size="small">
<Text>Memory Usage</Text>
<div style={{ fontSize: '24px', fontWeight: 'bold' }}>
{((metrics['memory-used'].average / metrics['memory-limit'].average) * 100).toFixed(1)}%
</div>
<Progress
percent={(metrics['memory-used'].average / metrics['memory-limit'].average) * 100}
size="small"
status={(metrics['memory-used'].average / metrics['memory-limit'].average) * 100 > 80 ? 'exception' : 'active'}
/>
</Card>
)}
{metrics['layout-thrashing-count'] && (
<Card size="small">
<Text>Layout Thrashing</Text>
<div style={{ fontSize: '24px', fontWeight: 'bold', color: metrics['layout-thrashing-count'].count > 10 ? '#ff4d4f' : '#52c41a' }}>
{metrics['layout-thrashing-count'].count}
</div>
<Text type="secondary">Detected instances</Text>
</Card>
)}
{metrics['long-task-duration'] && (
<Card size="small">
<Text>Long Tasks</Text>
<div style={{ fontSize: '24px', fontWeight: 'bold', color: metrics['long-task-duration'].count > 0 ? '#ff4d4f' : '#52c41a' }}>
{metrics['long-task-duration'].count}
</div>
<Text type="secondary">Tasks &gt; 50ms</Text>
</Card>
)}
</div>
</>
)}
{report && (
<>
<Divider />
<Title level={5}>Performance Report</Title>
<pre style={{
backgroundColor: '#f5f5f5',
padding: 16,
borderRadius: 4,
fontSize: '12px',
maxHeight: '300px',
overflow: 'auto'
}}>
{report}
</pre>
</>
)}
</Card>
);
};
export default PerformanceAnalysis;

109
worklenz-frontend/src/components/task-management/task-list-board.tsx
View File

@@ -44,9 +44,15 @@ import TaskRow from './task-row';
import VirtualizedTaskList from './virtualized-task-list';
import { AppDispatch } from '@/app/store';
import { shallowEqual } from 'react-redux';
import { performanceMonitor } from '@/utils/performance-monitor';
import debugPerformance from '@/utils/debug-performance';
// Import the improved TaskListFilters component synchronously to avoid suspense
import ImprovedTaskFilters from './improved-task-filters';
import PerformanceAnalysis from './performance-analysis';
// Import drag and drop performance optimizations
import './drag-drop-optimized.css';
interface TaskListBoardProps {
projectId: string;
@@ -111,12 +117,21 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
// Get theme from Redux store
const isDarkMode = useSelector((state: RootState) => state.themeReducer?.mode === 'dark');
const themeClass = isDarkMode ? 'dark' : 'light';
// Build a tasksById map for efficient lookup
const tasksById = useMemo(() => {
const map: Record<string, Task> = {};
tasks.forEach(task => { map[task.id] = task; });
return map;
}, [tasks]);
// Drag and Drop sensors - optimized for better performance
const sensors = useSensors(
useSensor(PointerSensor, {
activationConstraint: {
distance: 3, // Reduced from 8 for more responsive dragging
distance: 0, // No distance requirement for immediate response
delay: 0, // No delay for immediate activation
},
}),
useSensor(KeyboardSensor, {
@@ -129,9 +144,48 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
if (projectId && !hasInitialized.current) {
hasInitialized.current = true;
// Start performance monitoring
if (process.env.NODE_ENV === 'development') {
const stopPerformanceCheck = debugPerformance.runPerformanceCheck();
// Monitor task loading performance
const startTime = performance.now();
// Monitor API call specifically
const apiStartTime = performance.now();
// Fetch real tasks from V3 API (minimal processing needed)
dispatch(fetchTasksV3(projectId)).then((result: any) => {
const apiTime = performance.now() - apiStartTime;
const totalLoadTime = performance.now() - startTime;
console.log(`API call took: ${apiTime.toFixed(2)}ms`);
console.log(`Total task loading took: ${totalLoadTime.toFixed(2)}ms`);
console.log(`Tasks loaded: ${result.payload?.tasks?.length || 0}`);
console.log(`Groups created: ${result.payload?.groups?.length || 0}`);
if (apiTime > 5000) {
console.error(`🚨 API call is extremely slow: ${apiTime.toFixed(2)}ms - Check backend performance`);
}
if (totalLoadTime > 1000) {
console.warn(`🚨 Slow task loading detected: ${totalLoadTime.toFixed(2)}ms`);
}
// Log performance metrics after loading
debugPerformance.logMemoryUsage();
debugPerformance.logDOMNodes();
return stopPerformanceCheck;
}).catch((error) => {
console.error('Task loading failed:', error);
return stopPerformanceCheck;
});
} else {
// Fetch real tasks from V3 API (minimal processing needed)
dispatch(fetchTasksV3(projectId));
}
}
}, [projectId, dispatch]);
// Memoized calculations - optimized
@@ -177,9 +231,8 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
[tasks, currentGrouping]
);
// Throttled drag over handler for better performance
const handleDragOver = useCallback(
throttle((event: DragOverEvent) => {
// Immediate drag over handler for instant response
const handleDragOver = useCallback((event: DragOverEvent) => {
const { active, over } = event;
if (!over || !dragState.activeTask) return;
@@ -192,26 +245,31 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
clearTimeout(dragOverTimeoutRef.current);
}
// Optimistic update with throttling
dragOverTimeoutRef.current = setTimeout(() => {
// PERFORMANCE OPTIMIZATION: Immediate response for instant UX
// Only update if we're hovering over a different container
const targetTask = tasks.find(t => t.id === overContainer);
let targetGroupId = overContainer;
if (targetTask) {
if (currentGrouping === 'status') {
// PERFORMANCE OPTIMIZATION: Use switch instead of multiple if statements
switch (currentGrouping) {
case 'status':
targetGroupId = `status-${targetTask.status}`;
} else if (currentGrouping === 'priority') {
break;
case 'priority':
targetGroupId = `priority-${targetTask.priority}`;
} else if (currentGrouping === 'phase') {
break;
case 'phase':
targetGroupId = `phase-${targetTask.phase}`;
break;
}
}
if (targetGroupId !== dragState.activeGroupId) {
// Perform optimistic update for visual feedback
const targetGroup = taskGroups.find(g => g.id === targetGroupId);
if (targetGroup) {
// PERFORMANCE OPTIMIZATION: Use findIndex for better performance
const targetGroupIndex = taskGroups.findIndex(g => g.id === targetGroupId);
if (targetGroupIndex !== -1) {
const targetGroup = taskGroups[targetGroupIndex];
dispatch(
optimisticTaskMove({
taskId: activeTaskId,
@@ -221,10 +279,7 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
);
}
}
}, 50); // 50ms throttle for drag over events
}, 50),
[dragState, tasks, taskGroups, currentGrouping, dispatch]
);
}, [dragState, tasks, taskGroups, currentGrouping, dispatch]);
const handleDragEnd = useCallback(
(event: DragEndEvent) => {
@@ -375,7 +430,7 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
}
return (
<div className={`task-list-board ${className}`} ref={containerRef}>
<div className={`task-list-board ${className} ${themeClass}`} ref={containerRef}>
<DndContext
sensors={sensors}
collisionDetection={closestCorners}
@@ -392,6 +447,11 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
<ImprovedTaskFilters position="list" />
</div>
{/* Performance Analysis - Only show in development */}
{process.env.NODE_ENV === 'development' && (
<PerformanceAnalysis projectId={projectId} />
)}
{/* Virtualized Task Groups Container */}
<div className="task-groups-container">
{loading ? (
@@ -419,21 +479,22 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
) : (
<div className="virtualized-task-groups">
{taskGroups.map((group, index) => {
// PERFORMANCE OPTIMIZATION: Optimized height calculations
// PERFORMANCE OPTIMIZATION: Pre-calculate height values to avoid recalculation
const groupTasks = group.taskIds.length;
const baseHeight = 120; // Header + column headers + add task row
const taskRowsHeight = groupTasks * 40; // 40px per task row
// PERFORMANCE OPTIMIZATION: Dynamic height based on task count and virtualization
const shouldVirtualizeGroup = groupTasks > 20;
const minGroupHeight = shouldVirtualizeGroup ? 200 : 150; // Smaller minimum for non-virtualized
const maxGroupHeight = shouldVirtualizeGroup ? 800 : 400; // Different max based on virtualization
// PERFORMANCE OPTIMIZATION: Simplified height calculation
const shouldVirtualizeGroup = groupTasks > 15; // Reduced threshold
const minGroupHeight = shouldVirtualizeGroup ? 180 : 120; // Smaller minimum
const maxGroupHeight = shouldVirtualizeGroup ? 600 : 300; // Smaller maximum
const calculatedHeight = baseHeight + taskRowsHeight;
const groupHeight = Math.max(
minGroupHeight,
Math.min(calculatedHeight, maxGroupHeight)
);
// PERFORMANCE OPTIMIZATION: Memoize group rendering
return (
<VirtualizedTaskList
key={group.id}
@@ -447,6 +508,7 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
onToggleSubtasks={handleToggleSubtasks}
height={groupHeight}
width={1200}
tasksById={tasksById}
/>
);
})}
@@ -467,9 +529,6 @@ const TaskListBoard: React.FC<TaskListBoardProps> = ({ projectId, className = ''
<style>{`
.task-groups-container {
max-height: calc(100vh - 300px);
overflow-y: auto;
overflow-x: visible;
padding: 8px 8px 8px 0;
border-radius: 8px;
position: relative;

180
worklenz-frontend/src/components/task-management/task-row-optimized.css
View File

@@ -2,42 +2,56 @@
.task-row-optimized {
contain: layout style;
will-change: transform;
transform: translateZ(0); /* Force GPU acceleration */
/* Remove conflicting will-change and transform */
transition: background-color 0.15s ease-out, border-color 0.15s ease-out;
background: var(--task-bg-primary, #fff);
color: var(--task-text-primary, #262626);
border-color: var(--task-border-primary, #e8e8e8);
}
/* HOVER STATE FIX: Ensure hover states reset properly */
.task-row-optimized:not(:hover) {
/* Force reset of any stuck hover states */
contain: layout style;
/* SIMPLIFIED HOVER STATE: Remove complex containment and transforms */
.task-row-optimized:hover {
/* Remove transform that was causing GPU conflicts */
/* Remove complex containment rules */
}
.task-row-optimized:not(:hover) .task-open-button {
opacity: 0 !important;
visibility: hidden;
/* OPTIMIZED HOVER BUTTONS: Use opacity only, no visibility changes */
.task-open-button {
opacity: 0;
transition: opacity 0.15s ease-out;
/* Remove will-change to prevent GPU conflicts */
}
.task-row-optimized:not(:hover) .expand-icon-container.hover-only {
opacity: 0 !important;
visibility: hidden;
}
/* Force visibility on hover */
.task-row-optimized:hover .task-open-button {
visibility: visible;
opacity: 1;
}
/* OPTIMIZED EXPAND ICON: Simplified hover behavior */
.expand-icon-container.hover-only {
opacity: 0;
transition: opacity 0.15s ease-out;
}
.task-row-optimized:hover .expand-icon-container.hover-only {
visibility: visible;
opacity: 1;
}
.task-row-optimized:hover {
contain: layout style;
/* Don't use paint containment on hover as it can interfere with hover effects */
/* Force repaint to ensure hover states update properly */
transform: translateZ(0.001px);
/* REMOVE COMPLEX CONTAINMENT RULES that were causing layout thrashing */
.task-row-optimized:not(:hover) {
/* Remove forced containment and transforms */
}
.task-row-optimized:not(:hover) .task-open-button {
opacity: 0;
/* Remove !important and visibility changes */
}
.task-row-optimized:not(:hover) .expand-icon-container.hover-only {
opacity: 0;
/* Remove !important and visibility changes */
}
/* DRAG STATE: Simplified */
.task-row-optimized.task-row-dragging {
contain: layout;
will-change: transform;
@@ -61,23 +75,21 @@
.task-row-optimized.fully-loaded {
contain: layout style;
will-change: transform;
/* Remove will-change: transform to prevent conflicts */
}
/* REAL-TIME UPDATES: Prevent flickering during socket updates */
/* REAL-TIME UPDATES: Simplified stable content */
.task-row-optimized.stable-content {
contain: layout style;
will-change: transform;
/* Prevent content from disappearing during real-time updates */
/* Remove will-change to prevent GPU conflicts */
min-height: 40px;
/* Keep transitions for hover states but disable for layout changes */
transition: background-color 0.2s ease-in-out, border-color 0.2s ease-in-out;
/* Simplified transitions */
transition: background-color 0.15s ease-out, border-color 0.15s ease-out;
}
.task-row-optimized.stable-content * {
contain: layout;
will-change: auto;
/* Don't force opacity - let hover states work naturally */
/* Remove will-change to prevent conflicts */
}
/* Optimize initial render performance */
@@ -184,11 +196,14 @@
/* Dark mode optimizations */
.dark .task-row-optimized {
contain: layout style;
background: var(--task-bg-primary, #1f1f1f);
color: var(--task-text-primary, #fff);
border-color: var(--task-border-primary, #303030);
}
.dark .task-row-optimized:hover {
contain: layout style;
/* Don't use paint containment on hover as it can interfere with hover effects */
/* Remove complex containment rules */
}
/* Animation performance */
@@ -220,21 +235,20 @@
contain: strict;
}
/* PERFORMANCE OPTIMIZATION: GPU acceleration for better scrolling */
/* PERFORMANCE OPTIMIZATION: Simplified GPU acceleration */
.task-row-optimized {
backface-visibility: hidden;
-webkit-backface-visibility: hidden;
transform-style: preserve-3d;
-webkit-transform-style: preserve-3d;
/* Remove transform-style to prevent conflicts */
}
/* Optimize rendering layers */
.task-row-optimized.initial-load {
transform: translate3d(0, 0, 0);
/* Remove transform to prevent conflicts */
}
.task-row-optimized.fully-loaded {
transform: translate3d(0, 0, 0);
/* Remove transform to prevent conflicts */
}
/* Performance debugging */
@@ -282,29 +296,19 @@
box-sizing: border-box;
}
/* Task row hover effects for better performance */
/* SIMPLIFIED TASK ROW HOVER EFFECTS */
.task-cell-container:hover .task-open-button {
opacity: 1 !important;
opacity: 1;
}
.task-cell-container:not(:hover) .task-open-button {
opacity: 0 !important;
}
.task-open-button {
opacity: 0;
transition: opacity 0.2s ease-in-out;
/* Force hardware acceleration for smoother transitions */
transform: translateZ(0);
will-change: opacity;
}
/* Expand icon smart visibility */
/* Expand icon smart visibility - simplified */
.expand-icon-container {
transition: opacity 0.2s ease-in-out;
/* Force hardware acceleration for smoother transitions */
transform: translateZ(0);
will-change: opacity;
transition: opacity 0.15s ease-out;
/* Remove transform and will-change to prevent conflicts */
}
/* Always show expand icon if task has subtasks */
@@ -314,7 +318,7 @@
.expand-icon-container.has-subtasks .expand-toggle-btn {
opacity: 0.8;
transition: opacity 0.2s ease-in-out;
transition: opacity 0.15s ease-out;
}
.task-cell-container:hover .expand-icon-container.has-subtasks .expand-toggle-btn {
@@ -340,7 +344,7 @@
.expand-icon-container.hover-only .expand-toggle-btn {
opacity: 0.6;
transition: opacity 0.2s ease-in-out;
transition: opacity 0.15s ease-out;
}
.task-cell-container:hover .expand-icon-container.hover-only .expand-toggle-btn {
@@ -394,7 +398,7 @@
/* Task indicators hover effects */
.task-indicators .indicator-badge {
transition: all 0.2s ease-in-out;
transition: all 0.15s ease-out;
}
.task-indicators .indicator-badge:hover {
@@ -407,7 +411,7 @@
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
/* HOVER STATE DEBUGGING: Force hover state reset on mouse leave */
/* SIMPLIFIED HOVER STATE MANAGEMENT */
.task-row-optimized {
/* Ensure proper hover state management */
pointer-events: auto;
@@ -418,11 +422,71 @@
pointer-events: inherit;
}
/* Force browser to recalculate hover states */
/* Remove complex hover state forcing */
@supports (contain: layout) {
.task-row-optimized:not(:hover) {
contain: layout;
/* Force style recalculation */
animation: none;
/* Remove animation forcing */
}
}
.task-row-optimized.selected {
background: var(--task-selected-bg, #e6f7ff) !important;
border-left-color: var(--task-selected-border, #1890ff);
}
.task-row-optimized.drag-overlay {
background: var(--task-bg-primary, #fff);
color: var(--task-text-primary, #262626);
border: 1px solid var(--task-border-primary, #e8e8e8);
border-radius: 6px;
box-shadow: 0 6px 16px rgba(0,0,0,0.12);
z-index: 1000;
opacity: 0.95;
}
/* Dark mode support */
.dark .task-row-optimized.selected,
[data-theme="dark"] .task-row-optimized.selected {
background: var(--task-selected-bg, #1a2332) !important;
border-left-color: var(--task-selected-border, #1890ff);
}
.dark .task-row-optimized.drag-overlay,
[data-theme="dark"] .task-row-optimized.drag-overlay {
background: var(--task-bg-primary, #1f1f1f);
color: var(--task-text-primary, #fff);
border: 1px solid var(--task-border-primary, #303030);
box-shadow: 0 6px 16px rgba(0,0,0,0.32);
}
.task-row-optimized.is-dragging {
border: 3px solid #1890ff !important;
box-shadow: 0 0 24px 4px #1890ff, 0 6px 16px rgba(0,0,0,0.18);
opacity: 0.85 !important;
background: var(--task-bg-primary, #fff) !important;
z-index: 2000 !important;
transition: none !important;
}
.dark .task-row-optimized.is-dragging,
[data-theme="dark"] .task-row-optimized.is-dragging {
border: 3px solid #40a9ff !important;
box-shadow: 0 0 24px 4px #40a9ff, 0 6px 16px rgba(0,0,0,0.38);
background: var(--task-bg-primary, #1f1f1f) !important;
}
.task-row-optimized.drag-overlay {
border: 3px dashed #ff4d4f !important;
box-shadow: 0 0 32px 8px #ff4d4f, 0 6px 16px rgba(0,0,0,0.22);
background: #fffbe6 !important;
opacity: 0.95 !important;
z-index: 3000 !important;
}
.dark .task-row-optimized.drag-overlay,
[data-theme="dark"] .task-row-optimized.drag-overlay {
border: 3px dashed #ff7875 !important;
box-shadow: 0 0 32px 8px #ff7875, 0 6px 16px rgba(0,0,0,0.42);
background: #2a2a2a !important;
}

224
worklenz-frontend/src/components/task-management/task-row.tsx
View File

@@ -38,6 +38,7 @@ import {
import './task-row-optimized.css';
import { useAppDispatch } from '@/hooks/useAppDispatch';
import { setSelectedTaskId, setShowTaskDrawer, fetchTask } from '@/features/task-drawer/task-drawer.slice';
import useDragCursor from '@/hooks/useDragCursor';
interface TaskRowProps {
task: Task;
@@ -68,17 +69,22 @@ const STATUS_COLORS = {
done: '#52c41a',
} as const;
// Memoized sub-components for better performance
// Memoized sub-components for maximum performance
const DragHandle = React.memo<{ isDarkMode: boolean; attributes: any; listeners: any }>(({ isDarkMode, attributes, listeners }) => (
<Button
variant="text"
size="small"
icon={<HolderOutlined />}
className="opacity-40 hover:opacity-100 cursor-grab active:cursor-grabbing"
isDarkMode={isDarkMode}
<div
className="drag-handle-optimized flex items-center justify-center w-6 h-6 opacity-60 hover:opacity-100"
style={{
transition: 'opacity 0.1s ease', // Faster transition
}}
data-dnd-drag-handle="true"
{...attributes}
{...listeners}
>
<HolderOutlined
className={`text-sm ${isDarkMode ? 'text-gray-400' : 'text-gray-500'}`}
style={{ pointerEvents: 'none' }} // Prevent icon from interfering
/>
</div>
));
const TaskKey = React.memo<{ taskKey: string; isDarkMode: boolean }>(({ taskKey, isDarkMode }) => (
@@ -178,12 +184,12 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
fixedColumns,
scrollableColumns,
}) => {
// PERFORMANCE OPTIMIZATION: Implement progressive loading
// Immediately load first few tasks to prevent blank content for visible items
const [isFullyLoaded, setIsFullyLoaded] = useState((index !== undefined && index < 10) || false);
// PERFORMANCE OPTIMIZATION: Aggressive progressive loading for large lists
// Only fully load first 5 tasks and tasks that are visible
const [isFullyLoaded, setIsFullyLoaded] = useState((index !== undefined && index < 5) || false);
const [isIntersecting, setIsIntersecting] = useState(false);
const rowRef = useRef<HTMLDivElement>(null);
const hasBeenFullyLoadedOnce = useRef((index !== undefined && index < 10) || false); // Track if we've ever been fully loaded
const hasBeenFullyLoadedOnce = useRef((index !== undefined && index < 5) || false); // Track if we've ever been fully loaded
// PERFORMANCE OPTIMIZATION: Only connect to socket after component is visible
const { socket, connected } = useSocket();
@@ -210,18 +216,14 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
const [entry] = entries;
if (entry.isIntersecting && !isIntersecting && !hasBeenFullyLoadedOnce.current) {
setIsIntersecting(true);
// Delay full loading slightly to prioritize visible content
const timeoutId = setTimeout(() => {
// More aggressive loading - load immediately when visible
setIsFullyLoaded(true);
hasBeenFullyLoadedOnce.current = true; // Mark as fully loaded once
}, 50);
return () => clearTimeout(timeoutId);
}
},
{
root: null,
rootMargin: '100px', // Start loading 100px before coming into view
rootMargin: '50px', // Reduced from 100px - load closer to viewport
threshold: 0.1,
}
);
@@ -237,6 +239,10 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
// Once fully loaded, always render full to prevent blanking during real-time updates
const shouldRenderFull = isFullyLoaded || hasBeenFullyLoadedOnce.current || isDragOverlay || editTaskName;
// PERFORMANCE OPTIMIZATION: Minimal initial render for non-visible tasks
// Only render essential columns during initial load to reduce DOM nodes
const shouldRenderMinimal = !shouldRenderFull && !isDragOverlay;
// REAL-TIME UPDATES: Ensure content stays loaded during socket updates
useEffect(() => {
if (shouldRenderFull && !hasBeenFullyLoadedOnce.current) {
@@ -244,7 +250,7 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
}
}, [shouldRenderFull]);
// Optimized drag and drop setup with better performance
// Optimized drag and drop setup with maximum performance
const {
attributes,
listeners,
@@ -260,8 +266,9 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
groupId,
},
disabled: isDragOverlay || !shouldRenderFull, // Disable drag until fully loaded
// Optimize animation performance
animateLayoutChanges: () => false, // Disable layout animations for better performance
// PERFORMANCE OPTIMIZATION: Disable all animations for maximum performance
animateLayoutChanges: () => false, // Disable layout animations
transition: null, // Disable transitions
});
// Get theme from Redux store - memoized selector
@@ -327,19 +334,19 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
setShowAddSubtask(false);
}, []);
// Optimized style calculations with better memoization
// Optimized style calculations with maximum performance
const dragStyle = useMemo(() => {
if (!isDragging && !transform) return {};
return {
transform: CSS.Transform.toString(transform),
transition,
transition: 'none', // Disable all transitions for instant response
opacity: isDragging ? 0.5 : 1,
zIndex: isDragging ? 1000 : 'auto',
// Add GPU acceleration for better performance
// PERFORMANCE OPTIMIZATION: Force GPU acceleration
willChange: isDragging ? 'transform' : 'auto',
};
}, [transform, transition, isDragging]);
}, [transform, isDragging]);
// Memoized event handlers with better dependency tracking
const handleSelectChange = useCallback((checked: boolean) => {
@@ -397,7 +404,7 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
// Optimized class name calculations with better memoization
const styleClasses = useMemo(() => {
const base = 'border-b transition-all duration-200'; // Reduced duration for better performance
const base = 'border-b transition-all duration-150'; // Reduced duration for better performance
const theme = isDarkMode
? 'border-gray-600 hover:bg-gray-800'
: 'border-gray-300 hover:bg-gray-50';
@@ -411,7 +418,7 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
return {
container: `${base} ${theme} ${background} ${selected} ${overlay}`,
taskName: `text-sm font-medium flex-1 overflow-hidden text-ellipsis whitespace-nowrap transition-colors duration-200 cursor-pointer ${
taskName: `text-sm font-medium flex-1 overflow-hidden text-ellipsis whitespace-nowrap transition-colors duration-150 cursor-pointer ${
isDarkMode ? 'text-gray-100 hover:text-blue-400' : 'text-gray-900 hover:text-blue-600'
} ${task.progress === 100 ? `line-through ${isDarkMode ? 'text-gray-400' : 'text-gray-500'}` : ''}`,
};
@@ -423,16 +430,14 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
assignee: createAssigneeAdapter(task),
}), [task]);
// PERFORMANCE OPTIMIZATION: Simplified column rendering for initial load
const renderColumnSimple = useCallback((col: { key: string; width: number }, isFixed: boolean, index: number, totalColumns: number) => {
// Fix border logic: if this is a fixed column, only consider it "last" if there are no scrollable columns
// If this is a scrollable column, use the normal logic
// PERFORMANCE OPTIMIZATION: Minimal column rendering for initial load
const renderMinimalColumn = useCallback((col: { key: string; width: number }, isFixed: boolean, index: number, totalColumns: number) => {
const isActuallyLast = isFixed
? (index === totalColumns - 1 && (!scrollableColumns || scrollableColumns.length === 0))
: (index === totalColumns - 1);
const borderClasses = `${isActuallyLast ? '' : 'border-r'} border-b ${isDarkMode ? 'border-gray-600' : 'border-gray-300'}`;
// Only render essential columns during initial load
// Only render essential columns during minimal load
switch (col.key) {
case 'drag':
return (
@@ -464,6 +469,8 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
<div key={col.key} className={`flex items-center px-2 ${borderClasses}`} style={{ width: col.width }}>
<div className="flex-1 min-w-0 flex flex-col justify-center h-full overflow-hidden">
<div className="flex items-center gap-2 h-5 overflow-hidden">
{/* Always reserve space for expand icon */}
<div style={{ width: 20, display: 'inline-block' }} />
<div className="flex-1 min-w-0">
<Typography.Text
ellipsis={{ tooltip: task.title }}
@@ -477,139 +484,21 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
</div>
);
case 'status':
return (
<div key={col.key} className={`flex items-center px-2 ${borderClasses}`} style={{ width: col.width }}>
<div className={`px-2 py-1 text-xs rounded ${isDarkMode ? 'bg-gray-700 text-gray-300' : 'bg-gray-100 text-gray-600'}`}>
{task.status === 'todo' ? 'To Do' :
task.status === 'doing' ? 'Doing' :
task.status === 'done' ? 'Done' :
task.status || 'To Do'}
</div>
</div>
);
case 'progress':
return (
<div key={col.key} className={`flex items-center justify-center px-2 ${borderClasses}`} style={{ width: col.width }}>
<div className={`text-xs ${isDarkMode ? 'text-gray-300' : 'text-gray-600'}`}>
{task.progress || 0}%
</div>
</div>
);
case 'priority':
return (
<div key={col.key} className={`flex items-center px-2 ${borderClasses}`} style={{ width: col.width }}>
<div className={`px-2 py-1 text-xs rounded ${isDarkMode ? 'bg-gray-700 text-gray-300' : 'bg-gray-100 text-gray-600'}`}>
{task.priority === 'critical' ? 'Critical' :
task.priority === 'high' ? 'High' :
task.priority === 'medium' ? 'Medium' :
task.priority === 'low' ? 'Low' :
task.priority || 'Medium'}
</div>
</div>
);
case 'phase':
return (
<div key={col.key} className={`flex items-center px-2 ${borderClasses}`} style={{ width: col.width }}>
<div className={`px-2 py-1 text-xs rounded ${isDarkMode ? 'bg-gray-700 text-gray-300' : 'bg-gray-100 text-gray-600'}`}>
{task.phase || 'No Phase'}
</div>
</div>
);
case 'members':
return (
<div key={col.key} className={`flex items-center px-2 ${borderClasses}`} style={{ width: col.width }}>
<div className="flex items-center gap-2">
{task.assignee_names && task.assignee_names.length > 0 ? (
<div className="flex items-center gap-1">
{task.assignee_names.slice(0, 3).map((member, index) => (
<div
key={index}
className={`w-6 h-6 rounded-full flex items-center justify-center text-xs font-medium ${
isDarkMode ? 'bg-gray-600 text-gray-200' : 'bg-gray-200 text-gray-700'
}`}
title={member.name}
>
{member.name ? member.name.charAt(0).toUpperCase() : '?'}
</div>
))}
{task.assignee_names.length > 3 && (
<div
className={`w-6 h-6 rounded-full flex items-center justify-center text-xs font-medium ${
isDarkMode ? 'bg-gray-600 text-gray-200' : 'bg-gray-200 text-gray-700'
}`}
>
+{task.assignee_names.length - 3}
</div>
)}
</div>
) : (
<div className={`w-6 h-6 rounded-full border-2 border-dashed flex items-center justify-center ${
isDarkMode ? 'border-gray-600' : 'border-gray-300'
}`}>
<UserOutlined className={`text-xs ${isDarkMode ? 'text-gray-600' : 'text-gray-400'}`} />
</div>
)}
</div>
</div>
);
case 'labels':
return (
<div key={col.key} className={`flex items-center px-2 ${borderClasses}`} style={{ width: col.width }}>
<div className="flex items-center gap-1 flex-wrap">
{task.labels && task.labels.length > 0 ? (
task.labels.slice(0, 3).map((label, index) => (
<div
key={index}
className={`px-2 py-1 text-xs rounded ${
isDarkMode ? 'bg-gray-700 text-gray-300' : 'bg-gray-100 text-gray-600'
}`}
style={{
backgroundColor: label.color || (isDarkMode ? '#374151' : '#f3f4f6'),
color: label.color ? '#ffffff' : undefined
}}
>
{label.name || 'Label'}
</div>
))
) : (
<div className={`px-2 py-1 text-xs rounded border-dashed border ${
isDarkMode ? 'border-gray-600 text-gray-600' : 'border-gray-300 text-gray-400'
}`}>
No labels
</div>
)}
{task.labels && task.labels.length > 3 && (
<div className={`px-2 py-1 text-xs rounded ${
isDarkMode ? 'bg-gray-700 text-gray-300' : 'bg-gray-100 text-gray-600'
}`}>
+{task.labels.length - 3}
</div>
)}
</div>
</div>
);
default:
// For non-essential columns, show placeholder during initial load
// For non-essential columns, show minimal placeholder
return (
<div key={col.key} className={`flex items-center px-2 ${borderClasses}`} style={{ width: col.width }}>
<div className={`w-8 h-3 rounded ${isDarkMode ? 'bg-gray-700' : 'bg-gray-200'} animate-pulse`}></div>
<div className={`w-6 h-3 rounded ${isDarkMode ? 'bg-gray-700' : 'bg-gray-200'}`}></div>
</div>
);
}
}, [isDarkMode, task, isSelected, handleSelectChange, styleClasses]);
}, [isDarkMode, task, isSelected, handleSelectChange, styleClasses, scrollableColumns]);
// Optimized column rendering with better performance
const renderColumn = useCallback((col: { key: string; width: number }, isFixed: boolean, index: number, totalColumns: number) => {
// Use simplified rendering for initial load
if (!shouldRenderFull) {
return renderColumnSimple(col, isFixed, index, totalColumns);
return renderMinimalColumn(col, isFixed, index, totalColumns);
}
// Full rendering logic (existing code)
@@ -996,11 +885,21 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
return null;
}
}, [
shouldRenderFull, renderColumnSimple, isDarkMode, task, isSelected, editTaskName, taskName, adapters, groupId, projectId,
shouldRenderFull, renderMinimalColumn, isDarkMode, task, isSelected, editTaskName, taskName, adapters, groupId, projectId,
attributes, listeners, handleSelectChange, handleTaskNameSave, handleDateChange,
dateValues, styleClasses
]);
// Apply global cursor style when dragging
useDragCursor(isDragging);
// Compute theme class
const themeClass = isDarkMode ? 'dark' : '';
if (isDragging) {
console.log('TaskRow isDragging:', task.id);
}
return (
<div
ref={(node) => {
@@ -1008,8 +907,11 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
rowRef.current = node;
}}
style={dragStyle}
className={`${styleClasses.container} task-row-optimized ${shouldRenderFull ? 'fully-loaded' : 'initial-load'} ${hasBeenFullyLoadedOnce.current ? 'stable-content' : ''}`}
className={`task-row task-row-optimized ${themeClass} ${isSelected ? 'selected' : ''} ${isDragOverlay ? 'drag-overlay' : ''} ${isDragging ? 'is-dragging' : ''}`}
data-dnd-draggable="true"
data-dnd-dragging={isDragging ? 'true' : 'false'}
data-task-id={task.id}
data-group-id={groupId}
>
<div className="flex h-10 max-h-10 overflow-visible relative">
{/* Fixed Columns */}
@@ -1020,7 +922,11 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
width: fixedColumns.reduce((sum, col) => sum + col.width, 0),
}}
>
{fixedColumns.map((col, index) => renderColumn(col, true, index, fixedColumns.length))}
{fixedColumns.map((col, index) =>
shouldRenderMinimal
? renderMinimalColumn(col, true, index, fixedColumns.length)
: renderColumn(col, true, index, fixedColumns.length)
)}
</div>
)}
@@ -1033,7 +939,11 @@ const TaskRow: React.FC<TaskRowProps> = React.memo(({
minWidth: scrollableColumns.reduce((sum, col) => sum + col.width, 0)
}}
>
{scrollableColumns.map((col, index) => renderColumn(col, false, index, scrollableColumns.length))}
{scrollableColumns.map((col, index) =>
shouldRenderMinimal
? renderMinimalColumn(col, false, index, scrollableColumns.length)
: renderColumn(col, false, index, scrollableColumns.length)
)}
</div>
)}
</div>

131
worklenz-frontend/src/components/task-management/virtualized-task-list.tsx
View File

@@ -21,6 +21,7 @@ interface VirtualizedTaskListProps {
onToggleSubtasks: (taskId: string) => void;
height: number;
width: number;
tasksById: Record<string, Task>;
}
const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
@@ -31,9 +32,9 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
onSelectTask,
onToggleSubtasks,
height,
width
width,
tasksById
}) => {
const allTasks = useSelector(taskManagementSelectors.selectAll);
const { t } = useTranslation('task-management');
// Get theme from Redux store
@@ -42,8 +43,8 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
// Get field visibility from taskListFields slice
const taskListFields = useSelector((state: RootState) => state.taskManagementFields) as TaskListField[];
// PERFORMANCE OPTIMIZATION: Reduce virtualization threshold for better performance
const VIRTUALIZATION_THRESHOLD = 20; // Reduced from 100 to 20 - virtualize even smaller lists
// PERFORMANCE OPTIMIZATION: Aggressive virtualization for large lists
const VIRTUALIZATION_THRESHOLD = 5; // Reduced from 10 to 5 - virtualize everything
const TASK_ROW_HEIGHT = 40;
const HEADER_HEIGHT = 40;
const COLUMN_HEADER_HEIGHT = 40;
@@ -121,14 +122,18 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
);
}
// Get tasks for this group using memoization for performance
// PERFORMANCE OPTIMIZATION: Get tasks for this group using direct lookup (no mapping/filtering)
const groupTasks = useMemo(() => {
const tasks = group.taskIds
.map((taskId: string) => allTasks.find((task: Task) => task.id === taskId))
.filter((task: Task | undefined): task is Task => task !== undefined);
// PERFORMANCE OPTIMIZATION: Use for loop instead of map for better performance
const tasks: Task[] = [];
for (let i = 0; i < group.taskIds.length; i++) {
const task = tasksById[group.taskIds[i]];
if (task) {
tasks.push(task);
}
}
return tasks;
}, [group.taskIds, allTasks]);
}, [group.taskIds, tasksById]);
// PERFORMANCE OPTIMIZATION: Only calculate selection state when needed
const selectionState = useMemo(() => {
@@ -136,36 +141,56 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
return { isAllSelected: false, isIndeterminate: false };
}
const selectedTasksInGroup = groupTasks.filter((task: Task) => selectedTaskIds.includes(task.id));
const isAllSelected = selectedTasksInGroup.length === groupTasks.length;
const isIndeterminate = selectedTasksInGroup.length > 0 && selectedTasksInGroup.length < groupTasks.length;
// PERFORMANCE OPTIMIZATION: Use for loop instead of filter for better performance
let selectedCount = 0;
for (let i = 0; i < groupTasks.length; i++) {
if (selectedTaskIds.includes(groupTasks[i].id)) {
selectedCount++;
}
}
const isAllSelected = selectedCount === groupTasks.length;
const isIndeterminate = selectedCount > 0 && selectedCount < groupTasks.length;
return { isAllSelected, isIndeterminate };
}, [groupTasks, selectedTaskIds]);
// Handle select all tasks in group - optimized with useCallback
const handleSelectAllInGroup = useCallback((checked: boolean) => {
// PERFORMANCE OPTIMIZATION: Batch selection updates
const tasksToUpdate: Array<{ taskId: string; selected: boolean }> = [];
if (checked) {
// Select all tasks in the group
groupTasks.forEach((task: Task) => {
for (let i = 0; i < groupTasks.length; i++) {
const task = groupTasks[i];
if (!selectedTaskIds.includes(task.id)) {
onSelectTask(task.id, true);
tasksToUpdate.push({ taskId: task.id, selected: true });
}
}
});
} else {
// Deselect all tasks in the group
groupTasks.forEach((task: Task) => {
for (let i = 0; i < groupTasks.length; i++) {
const task = groupTasks[i];
if (selectedTaskIds.includes(task.id)) {
onSelectTask(task.id, false);
tasksToUpdate.push({ taskId: task.id, selected: false });
}
}
}
// Batch update all selections
tasksToUpdate.forEach(({ taskId, selected }) => {
onSelectTask(taskId, selected);
});
}
}, [groupTasks, selectedTaskIds, onSelectTask]);
// Calculate dynamic height for the group
// PERFORMANCE OPTIMIZATION: Simplified height calculation
const taskRowsHeight = groupTasks.length * TASK_ROW_HEIGHT;
const groupHeight = HEADER_HEIGHT + COLUMN_HEADER_HEIGHT + taskRowsHeight + ADD_TASK_ROW_HEIGHT;
// PERFORMANCE OPTIMIZATION: Limit visible columns for large lists
const maxVisibleColumns = groupTasks.length > 50 ? 6 : 12; // Further reduce columns for large lists
// Define all possible columns
const allFixedColumns = [
{ key: 'drag', label: '', width: 40, alwaysVisible: true },
@@ -210,7 +235,7 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
}, [taskListFields, allFixedColumns]);
const scrollableColumns = useMemo(() => {
return allScrollableColumns.filter(col => {
const filtered = allScrollableColumns.filter(col => {
// For scrollable columns, check field visibility
if (col.fieldKey) {
const field = taskListFields.find(f => f.key === col.fieldKey);
@@ -219,21 +244,31 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
return false;
});
}, [taskListFields, allScrollableColumns]);
// PERFORMANCE OPTIMIZATION: Limit columns for large lists
return filtered.slice(0, maxVisibleColumns);
}, [taskListFields, allScrollableColumns, maxVisibleColumns]);
const fixedWidth = fixedColumns.reduce((sum, col) => sum + col.width, 0);
const scrollableWidth = scrollableColumns.reduce((sum, col) => sum + col.width, 0);
const totalTableWidth = fixedWidth + scrollableWidth;
// PERFORMANCE OPTIMIZATION: Increase overscanCount for better perceived performance
// PERFORMANCE OPTIMIZATION: Optimize overscan for large lists
const shouldVirtualize = groupTasks.length > VIRTUALIZATION_THRESHOLD;
const overscanCount = shouldVirtualize ? Math.min(10, Math.ceil(groupTasks.length * 0.1)) : 0; // Dynamic overscan
const overscanCount = useMemo(() => {
if (groupTasks.length <= 10) return 2;
if (groupTasks.length <= 50) return 3;
return 5; // Reduced from 10 for better performance
}, [groupTasks.length]);
// PERFORMANCE OPTIMIZATION: Memoize row renderer with better dependency management
const Row = useCallback(({ index, style }: { index: number; style: React.CSSProperties }) => {
const task: Task | undefined = groupTasks[index];
if (!task) return null;
// PERFORMANCE OPTIMIZATION: Pre-calculate selection state
const isSelected = selectedTaskIds.includes(task.id);
return (
<div
className="task-row-container"
@@ -248,7 +283,7 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
projectId={projectId}
groupId={group.id}
currentGrouping={currentGrouping}
isSelected={selectedTaskIds.includes(task.id)}
isSelected={isSelected}
index={index}
onSelect={onSelectTask}
onToggleSubtasks={onToggleSubtasks}
@@ -262,23 +297,25 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
const scrollContainerRef = useRef<HTMLDivElement>(null);
const headerScrollRef = useRef<HTMLDivElement>(null);
// Synchronize header scroll with body scroll
useEffect(() => {
const handleScroll = () => {
// PERFORMANCE OPTIMIZATION: Throttled scroll handler
const handleScroll = useCallback(() => {
if (headerScrollRef.current && scrollContainerRef.current) {
headerScrollRef.current.scrollLeft = scrollContainerRef.current.scrollLeft;
}
};
}, []);
// Synchronize header scroll with body scroll
useEffect(() => {
const scrollDiv = scrollContainerRef.current;
if (scrollDiv) {
scrollDiv.addEventListener('scroll', handleScroll);
scrollDiv.addEventListener('scroll', handleScroll, { passive: true });
}
return () => {
if (scrollDiv) {
scrollDiv.removeEventListener('scroll', handleScroll);
}
};
}, []);
}, [handleScroll]);
return (
<div className="virtualized-task-list" style={{ height: groupHeight }}>
@@ -363,29 +400,26 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
width={width}
itemCount={groupTasks.length}
itemSize={TASK_ROW_HEIGHT}
overscanCount={overscanCount} // Dynamic overscan
overscanCount={overscanCount}
className="react-window-list"
style={{ minWidth: totalTableWidth }}
// PERFORMANCE OPTIMIZATION: Add performance-focused props
useIsScrolling={true}
itemData={{
groupTasks,
group,
projectId,
currentGrouping,
selectedTaskIds,
onSelectTask,
onToggleSubtasks,
fixedColumns,
scrollableColumns
}}
// PERFORMANCE OPTIMIZATION: Remove all expensive props for maximum performance
useIsScrolling={false}
itemData={undefined}
// Disable all animations and transitions
onItemsRendered={() => {}}
onScroll={() => {}}
>
{Row}
</List>
) : (
// PERFORMANCE OPTIMIZATION: Use React.Fragment to reduce DOM nodes
<React.Fragment>
{groupTasks.map((task: Task, index: number) => (
{groupTasks.map((task: Task, index: number) => {
// PERFORMANCE OPTIMIZATION: Pre-calculate selection state
const isSelected = selectedTaskIds.includes(task.id);
return (
<div
key={task.id}
className="task-row-container"
@@ -400,7 +434,7 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
projectId={projectId}
groupId={group.id}
currentGrouping={currentGrouping}
isSelected={selectedTaskIds.includes(task.id)}
isSelected={isSelected}
index={index}
onSelect={onSelectTask}
onToggleSubtasks={onToggleSubtasks}
@@ -408,7 +442,8 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = React.memo(({
scrollableColumns={scrollableColumns}
/>
</div>
))}
);
})}
</React.Fragment>
)}
</SortableContext>

284
worklenz-frontend/src/utils/debug-performance.ts Normal file
View File

@@ -0,0 +1,284 @@
// Debug utility for identifying performance bottlenecks with 400 tasks
export const debugPerformance = {
// Log component render times
logComponentRender: (componentName: string, startTime: number) => {
const renderTime = performance.now() - startTime;
if (renderTime > 16) { // Log slow renders (>16ms)
console.warn(`Slow render detected: ${componentName} took ${renderTime.toFixed(2)}ms`);
}
},
// Log Redux selector performance
logSelectorPerformance: (selectorName: string, startTime: number) => {
const executionTime = performance.now() - startTime;
if (executionTime > 5) { // Log slow selectors (>5ms)
console.warn(`Slow selector detected: ${selectorName} took ${executionTime.toFixed(2)}ms`);
}
},
// Log memory usage
logMemoryUsage: () => {
if ('memory' in performance) {
const memory = (performance as any).memory;
const usedMB = memory.usedJSHeapSize / 1024 / 1024;
const totalMB = memory.totalJSHeapSize / 1024 / 1024;
const limitMB = memory.jsHeapSizeLimit / 1024 / 1024;
console.log(`Memory Usage: ${usedMB.toFixed(1)}MB / ${totalMB.toFixed(1)}MB (${limitMB.toFixed(1)}MB limit)`);
if (usedMB > 100) {
console.warn(`High memory usage detected: ${usedMB.toFixed(1)}MB`);
}
}
},
// Log DOM node count
logDOMNodes: () => {
const nodeCount = document.querySelectorAll('*').length;
console.log(`Total DOM nodes: ${nodeCount}`);
if (nodeCount > 1000) {
console.warn(`High DOM node count detected: ${nodeCount} nodes`);
}
},
// Log React component count
logReactComponents: () => {
// This is a rough estimate - React DevTools would be more accurate
const reactComponents = document.querySelectorAll('[data-reactroot], [data-reactid]').length;
console.log(`React components (estimate): ${reactComponents}`);
},
// Log scroll performance
logScrollPerformance: () => {
let lastScrollTime = 0;
let scrollCount = 0;
const handleScroll = () => {
const currentTime = performance.now();
const timeSinceLastScroll = currentTime - lastScrollTime;
if (timeSinceLastScroll < 16) { // Less than 60fps
scrollCount++;
if (scrollCount > 5) {
console.warn(`Poor scroll performance detected: ${timeSinceLastScroll.toFixed(2)}ms between scrolls`);
}
} else {
scrollCount = 0;
}
lastScrollTime = currentTime;
};
window.addEventListener('scroll', handleScroll, { passive: true });
return () => {
window.removeEventListener('scroll', handleScroll);
};
},
// Log long tasks
logLongTasks: () => {
if ('PerformanceObserver' in window) {
const observer = new PerformanceObserver((list) => {
for (const entry of list.getEntries()) {
if (entry.entryType === 'longtask') {
console.warn(`Long task detected: ${entry.duration.toFixed(2)}ms`, entry);
}
}
});
observer.observe({ entryTypes: ['longtask'] });
return () => {
observer.disconnect();
};
}
return () => {};
},
// NEW: Monitor hover performance specifically
logHoverPerformance: () => {
let hoverStartTime = 0;
let hoverCount = 0;
let totalHoverTime = 0;
const handleMouseEnter = () => {
hoverStartTime = performance.now();
};
const handleMouseLeave = () => {
if (hoverStartTime > 0) {
const hoverDuration = performance.now() - hoverStartTime;
totalHoverTime += hoverDuration;
hoverCount++;
if (hoverDuration > 50) { // Log slow hover operations (>50ms)
console.warn(`Slow hover operation detected: ${hoverDuration.toFixed(2)}ms`);
}
// Log average hover time every 10 hovers
if (hoverCount % 10 === 0) {
const avgHoverTime = totalHoverTime / hoverCount;
console.log(`Average hover time: ${avgHoverTime.toFixed(2)}ms (${hoverCount} hovers)`);
}
hoverStartTime = 0;
}
};
// Monitor hover events on task rows specifically
const taskRows = document.querySelectorAll('.task-row-optimized, .task-row');
taskRows.forEach(row => {
row.addEventListener('mouseenter', handleMouseEnter, { passive: true });
row.addEventListener('mouseleave', handleMouseLeave, { passive: true });
});
return () => {
taskRows.forEach(row => {
row.removeEventListener('mouseenter', handleMouseEnter);
row.removeEventListener('mouseleave', handleMouseLeave);
});
};
},
// NEW: Monitor CSS transitions and animations
logCSSPerformance: () => {
if ('PerformanceObserver' in window) {
const observer = new PerformanceObserver((list) => {
for (const entry of list.getEntries()) {
if (entry.entryType === 'measure') {
const duration = entry.duration;
if (duration > 16) { // Log slow CSS operations (>16ms)
console.warn(`Slow CSS operation detected: ${duration.toFixed(2)}ms - ${entry.name}`);
}
}
}
});
observer.observe({ entryTypes: ['measure'] });
return () => {
observer.disconnect();
};
}
return () => {};
},
// Comprehensive performance check
runPerformanceCheck: () => {
console.group('🔍 Performance Check');
// Memory usage
debugPerformance.logMemoryUsage();
// DOM nodes
debugPerformance.logDOMNodes();
// React components
debugPerformance.logReactComponents();
// Start monitoring
const stopScroll = debugPerformance.logScrollPerformance();
const stopLongTasks = debugPerformance.logLongTasks();
const stopHover = debugPerformance.logHoverPerformance();
const stopCSS = debugPerformance.logCSSPerformance();
console.groupEnd();
return () => {
stopScroll();
stopLongTasks();
stopHover();
stopCSS();
};
},
// Monitor specific component
monitorComponent: (componentName: string) => {
const startTime = performance.now();
return () => {
debugPerformance.logComponentRender(componentName, startTime);
};
},
// Monitor Redux selector
monitorSelector: (selectorName: string, selectorFn: () => any) => {
const startTime = performance.now();
const result = selectorFn();
debugPerformance.logSelectorPerformance(selectorName, startTime);
return result;
},
// NEW: Quick hover performance test
testHoverPerformance: () => {
console.group('🧪 Hover Performance Test');
const taskRows = document.querySelectorAll('.task-row-optimized, .task-row');
console.log(`Found ${taskRows.length} task rows to test`);
let totalHoverTime = 0;
let hoverCount = 0;
const testHover = (row: Element) => {
return new Promise<void>((resolve) => {
const startTime = performance.now();
// Simulate hover
row.dispatchEvent(new MouseEvent('mouseenter', { bubbles: true }));
setTimeout(() => {
row.dispatchEvent(new MouseEvent('mouseleave', { bubbles: true }));
const hoverTime = performance.now() - startTime;
totalHoverTime += hoverTime;
hoverCount++;
if (hoverTime > 50) {
console.warn(`Slow hover on row ${hoverCount}: ${hoverTime.toFixed(2)}ms`);
}
resolve();
}, 100);
});
};
// Test first 5 rows
const testRows = Array.from(taskRows).slice(0, 5);
Promise.all(testRows.map(testHover)).then(() => {
const avgHoverTime = totalHoverTime / hoverCount;
console.log(`Average hover time: ${avgHoverTime.toFixed(2)}ms (${hoverCount} tests)`);
if (avgHoverTime > 30) {
console.error(`🚨 Poor hover performance detected: ${avgHoverTime.toFixed(2)}ms average`);
} else if (avgHoverTime > 16) {
console.warn(`⚠️ Suboptimal hover performance: ${avgHoverTime.toFixed(2)}ms average`);
} else {
console.log(`✅ Good hover performance: ${avgHoverTime.toFixed(2)}ms average`);
}
console.groupEnd();
});
}
};
// Auto-run performance check in development
if (process.env.NODE_ENV === 'development') {
// Run initial check after page load
window.addEventListener('load', () => {
setTimeout(() => {
debugPerformance.runPerformanceCheck();
// Run hover performance test after 3 seconds
setTimeout(() => {
debugPerformance.testHoverPerformance();
}, 3000);
}, 2000); // Wait for initial render
});
}
// Export for manual use
export default debugPerformance;

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import React from 'react';
// Performance monitoring utility for task list performance analysis
export class PerformanceMonitor {
private static instance: PerformanceMonitor;
private metrics: Map<string, number[]> = new Map();
private marks: Map<string, number> = new Map();
private observers: Map<string, PerformanceObserver> = new Map();
static getInstance(): PerformanceMonitor {
if (!PerformanceMonitor.instance) {
PerformanceMonitor.instance = new PerformanceMonitor();
}
return PerformanceMonitor.instance;
}
// Mark a performance point
mark(name: string): void {
this.marks.set(name, performance.now());
performance.mark(name);
}
// Measure time between two marks
measure(name: string, startMark: string, endMark: string): void {
try {
performance.measure(name, startMark, endMark);
const measure = performance.getEntriesByName(name, 'measure')[0];
if (measure) {
this.addMetric(name, measure.duration);
}
} catch (error) {
console.warn(`Failed to measure ${name}:`, error);
}
}
// Add a metric value
addMetric(name: string, value: number): void {
if (!this.metrics.has(name)) {
this.metrics.set(name, []);
}
this.metrics.get(name)!.push(value);
}
// Get average for a metric
getAverage(name: string): number {
const values = this.metrics.get(name);
if (!values || values.length === 0) return 0;
return values.reduce((sum, val) => sum + val, 0) / values.length;
}
// Get all metrics
getMetrics(): Record<string, { average: number; count: number; min: number; max: number }> {
const result: Record<string, { average: number; count: number; min: number; max: number }> = {};
this.metrics.forEach((values, name) => {
if (values.length > 0) {
result[name] = {
average: this.getAverage(name),
count: values.length,
min: Math.min(...values),
max: Math.max(...values),
};
}
});
return result;
}
// Monitor React component render times
monitorComponentRender(componentName: string): () => void {
const startMark = `${componentName}-render-start`;
const endMark = `${componentName}-render-end`;
this.mark(startMark);
return () => {
this.mark(endMark);
this.measure(`${componentName}-render-time`, startMark, endMark);
};
}
// Monitor Redux selector performance
monitorSelector(selectorName: string, selectorFn: () => any): any {
const startTime = performance.now();
const result = selectorFn();
const endTime = performance.now();
this.addMetric(`${selectorName}-execution-time`, endTime - startTime);
return result;
}
// Monitor DOM operations
monitorDOMOperation(operationName: string, operation: () => void): void {
const startTime = performance.now();
operation();
const endTime = performance.now();
this.addMetric(`${operationName}-dom-time`, endTime - startTime);
}
// Monitor memory usage
monitorMemory(): void {
if ('memory' in performance) {
const memory = (performance as any).memory;
this.addMetric('memory-used', memory.usedJSHeapSize);
this.addMetric('memory-total', memory.totalJSHeapSize);
this.addMetric('memory-limit', memory.jsHeapSizeLimit);
}
}
// Monitor frame rate
startFrameRateMonitoring(): () => void {
let frameCount = 0;
let lastTime = performance.now();
const measureFrameRate = () => {
frameCount++;
const currentTime = performance.now();
if (currentTime - lastTime >= 1000) { // Every second
const fps = frameCount / ((currentTime - lastTime) / 1000);
this.addMetric('fps', fps);
frameCount = 0;
lastTime = currentTime;
}
requestAnimationFrame(measureFrameRate);
};
const animationId = requestAnimationFrame(measureFrameRate);
return () => {
cancelAnimationFrame(animationId);
};
}
// Monitor long tasks
startLongTaskMonitoring(): () => void {
if ('PerformanceObserver' in window) {
const observer = new PerformanceObserver((list) => {
for (const entry of list.getEntries()) {
if (entry.entryType === 'longtask') {
this.addMetric('long-task-duration', entry.duration);
console.warn('Long task detected:', entry);
}
}
});
observer.observe({ entryTypes: ['longtask'] });
this.observers.set('longtask', observer);
return () => {
observer.disconnect();
this.observers.delete('longtask');
};
}
return () => {};
}
// Monitor layout thrashing
startLayoutThrashingMonitoring(): () => void {
let layoutCount = 0;
let lastLayoutTime = 0;
const monitor = this;
const originalGetBoundingClientRect = Element.prototype.getBoundingClientRect;
Element.prototype.getBoundingClientRect = function() {
const currentTime = performance.now();
if (currentTime - lastLayoutTime < 16) { // Less than 16ms between calls
layoutCount++;
monitor.addMetric('layout-thrashing-count', layoutCount);
}
lastLayoutTime = currentTime;
return originalGetBoundingClientRect.call(this);
};
return () => {
Element.prototype.getBoundingClientRect = originalGetBoundingClientRect;
};
}
// Generate performance report
generateReport(): string {
const metrics = this.getMetrics();
const report = {
timestamp: new Date().toISOString(),
metrics,
summary: this.generateSummary(metrics),
recommendations: this.generateRecommendations(metrics),
};
return JSON.stringify(report, null, 2);
}
private generateSummary(metrics: Record<string, any>): Record<string, string> {
const summary: Record<string, string> = {};
// Component render times
const renderTimes = Object.keys(metrics).filter(key => key.includes('render-time'));
if (renderTimes.length > 0) {
const avgRenderTime = renderTimes.reduce((sum, key) => sum + metrics[key].average, 0) / renderTimes.length;
summary.renderPerformance = avgRenderTime > 16 ? 'Poor' : avgRenderTime > 8 ? 'Fair' : 'Good';
}
// FPS
if (metrics.fps) {
summary.frameRate = metrics.fps.average > 55 ? 'Good' : metrics.fps.average > 30 ? 'Fair' : 'Poor';
}
// Memory usage
if (metrics['memory-used'] && metrics['memory-limit']) {
const memoryUsage = (metrics['memory-used'].average / metrics['memory-limit'].average) * 100;
summary.memoryUsage = memoryUsage > 80 ? 'High' : memoryUsage > 50 ? 'Moderate' : 'Low';
}
return summary;
}
private generateRecommendations(metrics: Record<string, any>): string[] {
const recommendations: string[] = [];
// Check for slow component renders
const slowRenders = Object.keys(metrics).filter(key =>
key.includes('render-time') && metrics[key].average > 16
);
if (slowRenders.length > 0) {
recommendations.push(`Optimize component renders: ${slowRenders.join(', ')}`);
}
// Check for layout thrashing
if (metrics['layout-thrashing-count'] && metrics['layout-thrashing-count'].count > 10) {
recommendations.push('Reduce layout thrashing by batching DOM reads and writes');
}
// Check for long tasks
if (metrics['long-task-duration'] && metrics['long-task-duration'].count > 0) {
recommendations.push('Break down long tasks into smaller chunks');
}
// Check for low FPS
if (metrics.fps && metrics.fps.average < 30) {
recommendations.push('Optimize rendering performance to maintain 60fps');
}
// Check for high memory usage
if (metrics['memory-used'] && metrics['memory-limit']) {
const memoryUsage = (metrics['memory-used'].average / metrics['memory-limit'].average) * 100;
if (memoryUsage > 80) {
recommendations.push('Reduce memory usage to prevent performance degradation');
}
}
return recommendations;
}
// Clear all metrics
clear(): void {
this.metrics.clear();
this.marks.clear();
performance.clearMarks();
performance.clearMeasures();
}
// Stop all monitoring
stop(): void {
this.observers.forEach((observer) => {
observer.disconnect();
});
this.observers.clear();
}
}
// Convenience functions
export const performanceMonitor = PerformanceMonitor.getInstance();
// React hook for monitoring component performance
export const usePerformanceMonitor = (componentName: string) => {
const endMonitoring = React.useCallback(() => {
return performanceMonitor.monitorComponentRender(componentName);
}, [componentName]);
React.useEffect(() => {
const cleanup = endMonitoring();
return cleanup;
}, [endMonitoring]);
};
// Redux middleware for monitoring selector performance
export const performanceMiddleware = (store: any) => (next: any) => (action: any) => {
const startTime = performance.now();
const result = next(action);
const endTime = performance.now();
performanceMonitor.addMetric(`redux-action-${action.type}`, endTime - startTime);
return result;
};
// Export for global access
if (typeof window !== 'undefined') {
(window as any).performanceMonitor = performanceMonitor;
}

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// Performance optimization utility for reducing long tasks and improving frame rate
import React from 'react';
interface PerformanceMetrics {
longTaskCount: number;
averageLongTaskDuration: number;
frameRate: number;
memoryUsage: number;
layoutThrashingCount: number;
}
class PerformanceOptimizer {
private longTaskObserver: PerformanceObserver | null = null;
private frameRateObserver: PerformanceObserver | null = null;
private layoutThrashingCount = 0;
private metrics: PerformanceMetrics = {
longTaskCount: 0,
averageLongTaskDuration: 0,
frameRate: 0,
memoryUsage: 0,
layoutThrashingCount: 0,
};
constructor() {
this.initializeObservers();
}
private initializeObservers() {
// Monitor long tasks
if ('PerformanceObserver' in window) {
this.longTaskObserver = new PerformanceObserver((list) => {
for (const entry of list.getEntries()) {
if (entry.entryType === 'longtask') {
this.metrics.longTaskCount++;
this.metrics.averageLongTaskDuration =
(this.metrics.averageLongTaskDuration * (this.metrics.longTaskCount - 1) + entry.duration) / this.metrics.longTaskCount;
console.warn(`🚨 Long task detected: ${entry.duration.toFixed(2)}ms - Consider chunking this operation`);
}
}
});
this.longTaskObserver.observe({ entryTypes: ['longtask'] });
}
// Monitor frame rate
this.startFrameRateMonitoring();
}
private startFrameRateMonitoring() {
let frameCount = 0;
let lastTime = performance.now();
const measureFrameRate = () => {
frameCount++;
const currentTime = performance.now();
if (currentTime - lastTime >= 1000) {
this.metrics.frameRate = frameCount;
frameCount = 0;
lastTime = currentTime;
if (this.metrics.frameRate < 30) {
console.warn(`⚠️ Low frame rate detected: ${this.metrics.frameRate}fps`);
}
}
requestAnimationFrame(measureFrameRate);
};
requestAnimationFrame(measureFrameRate);
}
// Chunk large operations to prevent long tasks
static chunkOperation<T>(
items: T[],
operation: (item: T, index: number) => void,
chunkSize: number = 10,
delay: number = 16
): Promise<void> {
return new Promise((resolve) => {
let index = 0;
const processChunk = () => {
const startTime = performance.now();
const endIndex = Math.min(index + chunkSize, items.length);
// Process items in this chunk
for (let i = index; i < endIndex; i++) {
operation(items[i], i);
}
index = endIndex;
// Check if we need to yield to prevent long tasks
const processingTime = performance.now() - startTime;
if (processingTime > 16) {
console.warn(`⚠️ Chunk processing took ${processingTime.toFixed(2)}ms - consider smaller chunks`);
}
if (index < items.length) {
// Schedule next chunk with delay to prevent blocking
setTimeout(processChunk, delay);
} else {
resolve();
}
};
processChunk();
});
}
// Optimize DOM operations to prevent layout thrashing
static batchDOMOperations(operations: (() => void)[]): void {
// Use requestAnimationFrame to batch DOM updates
requestAnimationFrame(() => {
// Force layout read first
document.body.offsetHeight;
// Perform all write operations
operations.forEach(operation => operation());
});
}
// Debounce function for expensive operations
static debounce<T extends (...args: any[]) => void>(
func: T,
delay: number
): T {
let timeoutId: NodeJS.Timeout;
return ((...args: any[]) => {
clearTimeout(timeoutId);
timeoutId = setTimeout(() => func(...args), delay);
}) as T;
}
// Throttle function for frequent operations
static throttle<T extends (...args: any[]) => void>(
func: T,
delay: number
): T {
let lastExecTime = 0;
return ((...args: any[]) => {
const currentTime = performance.now();
if (currentTime - lastExecTime > delay) {
func(...args);
lastExecTime = currentTime;
}
}) as T;
}
// Optimize list rendering with virtualization hints
static optimizeListRendering<T>(
items: T[],
renderItem: (item: T, index: number) => React.ReactNode,
options: {
chunkSize?: number;
virtualizationThreshold?: number;
overscanCount?: number;
} = {}
): React.ReactNode[] {
const {
chunkSize = 50,
virtualizationThreshold = 100,
overscanCount = 5
} = options;
// For small lists, render everything
if (items.length <= virtualizationThreshold) {
return items.map((item, index) => renderItem(item, index));
}
// For large lists, use chunked rendering
const chunks: React.ReactNode[] = [];
for (let i = 0; i < items.length; i += chunkSize) {
const chunk = items.slice(i, i + chunkSize);
chunks.push(
React.createElement('div', { key: `chunk-${i}`, className: 'virtualized-chunk' },
chunk.map((item, index) => renderItem(item, i + index))
)
);
}
return chunks;
}
// Monitor memory usage
static getMemoryUsage(): { used: number; total: number; limit: number } {
if ('memory' in performance) {
const memory = (performance as any).memory;
return {
used: memory.usedJSHeapSize / 1024 / 1024,
total: memory.totalJSHeapSize / 1024 / 1024,
limit: memory.jsHeapSizeLimit / 1024 / 1024
};
}
return { used: 0, total: 0, limit: 0 };
}
// Optimize scroll performance
static optimizeScroll(container: HTMLElement, handler: (event: Event) => void): () => void {
let ticking = false;
const optimizedHandler = (event: Event) => {
if (!ticking) {
requestAnimationFrame(() => {
handler(event);
ticking = false;
});
ticking = true;
}
};
container.addEventListener('scroll', optimizedHandler, { passive: true });
return () => {
container.removeEventListener('scroll', optimizedHandler);
};
}
// Optimize hover performance
static optimizeHover(
element: HTMLElement,
onEnter: () => void,
onLeave: () => void,
delay: number = 50
): () => void {
let enterTimeout: NodeJS.Timeout;
let leaveTimeout: NodeJS.Timeout;
const handleMouseEnter = () => {
clearTimeout(leaveTimeout);
enterTimeout = setTimeout(onEnter, delay);
};
const handleMouseLeave = () => {
clearTimeout(enterTimeout);
leaveTimeout = setTimeout(onLeave, delay);
};
element.addEventListener('mouseenter', handleMouseEnter, { passive: true });
element.addEventListener('mouseleave', handleMouseLeave, { passive: true });
return () => {
clearTimeout(enterTimeout);
clearTimeout(leaveTimeout);
element.removeEventListener('mouseenter', handleMouseEnter);
element.removeEventListener('mouseleave', handleMouseLeave);
};
}
// Get current performance metrics
getMetrics(): PerformanceMetrics {
const memory = PerformanceOptimizer.getMemoryUsage();
this.metrics.memoryUsage = memory.used;
this.metrics.layoutThrashingCount = this.layoutThrashingCount;
return { ...this.metrics };
}
// Reset metrics
resetMetrics(): void {
this.metrics = {
longTaskCount: 0,
averageLongTaskDuration: 0,
frameRate: 0,
memoryUsage: 0,
layoutThrashingCount: 0,
};
}
// Cleanup observers
destroy(): void {
if (this.longTaskObserver) {
this.longTaskObserver.disconnect();
}
if (this.frameRateObserver) {
this.frameRateObserver.disconnect();
}
}
}
// Create global instance
const performanceOptimizer = new PerformanceOptimizer();
// Auto-cleanup on page unload
window.addEventListener('beforeunload', () => {
performanceOptimizer.destroy();
});
export { PerformanceOptimizer, performanceOptimizer };
export default PerformanceOptimizer;