@clduab11/gemini-flow
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Revolutionary AI agent swarm coordination platform with Google Services integration, multimedia processing, and production-ready monitoring. Features 8 Google AI services, quantum computing capabilities, and enterprise-grade security.
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text/typescript
/**
* Streaming API Performance Benchmarks
* Comprehensive performance testing for multi-modal streaming capabilities
*/
import { describe, it, expect, beforeAll, afterAll, beforeEach, afterEach, jest } from '@jest/globals';
import { performance } from 'perf_hooks';
import { EventEmitter } from 'events';
// Test Infrastructure
import { TestEnvironmentManager } from '../fixtures/test-environment-manager';
import { NetworkSimulator } from '../fixtures/network-simulator';
import { LoadGenerator } from '../fixtures/load-generator';
import { MetricsCollector } from '../fixtures/metrics-collector';
// System Under Test
import { EnhancedStreamingAPI } from '../../src/streaming/enhanced-streaming-api';
import {
VideoStreamRequest,
AudioStreamRequest,
MultiModalChunk,
StreamQuality,
NetworkConditions,
PerformanceMetrics
} from '../../src/types/streaming';
// Performance targets
const PERFORMANCE_TARGETS = {
MAX_LATENCY_MS: 150,
MIN_THROUGHPUT_MBPS: 50,
MAX_PACKET_LOSS_PERCENT: 0.1,
MIN_QUALITY_SCORE: 0.85,
MAX_JITTER_MS: 20,
MIN_FRAME_RATE: 25, // fps
MAX_AUDIO_LATENCY_MS: 50
};
interface StreamingBenchmarkResult {
testName: string;
duration: number;
throughput: {
video: number; // Mbps
audio: number; // Mbps
total: number; // Mbps
};
latency: {
average: number;
p95: number;
p99: number;
max: number;
};
quality: {
video: number;
audio: number;
overall: number;
};
reliability: {
packetsLost: number;
errorsRecovered: number;
uptime: number;
};
resources: {
cpuUsage: number;
memoryUsage: number;
networkUtilization: number;
};
}
describe('Streaming API Performance Benchmarks', () => {
let testEnvironment: TestEnvironmentManager;
let networkSimulator: NetworkSimulator;
let loadGenerator: LoadGenerator;
let metricsCollector: MetricsCollector;
let streamingAPI: EnhancedStreamingAPI;
beforeAll(async () => {
testEnvironment = new TestEnvironmentManager({
services: ['streaming-api', 'webrtc', 'network-simulation'],
mockServices: false, // Use real networking for performance tests
metricsCollection: true,
performanceOptimized: true
});
networkSimulator = new NetworkSimulator({
profiles: {
ideal: { latency: 10, bandwidth: 1000000000, packetLoss: 0 }, // 1Gbps
good: { latency: 50, bandwidth: 100000000, packetLoss: 0.001 }, // 100Mbps
average: { latency: 100, bandwidth: 50000000, packetLoss: 0.01 }, // 50Mbps
poor: { latency: 300, bandwidth: 10000000, packetLoss: 0.05 }, // 10Mbps
mobile: { latency: 200, bandwidth: 5000000, packetLoss: 0.02 } // 5Mbps
}
});
loadGenerator = new LoadGenerator({
maxConcurrentStreams: 100,
streamDurations: [10000, 30000, 60000, 300000], // 10s to 5min
qualityLevels: ['low', 'medium', 'high', 'ultra'],
contentTypes: ['video', 'audio', 'mixed']
});
metricsCollector = new MetricsCollector({
interval: 100, // High-frequency collection for performance tests
retention: 3600000, // 1 hour retention
realTimeAnalysis: true
});
await testEnvironment.initialize();
await networkSimulator.initialize();
await loadGenerator.initialize();
await metricsCollector.start();
streamingAPI = new EnhancedStreamingAPI({
apiKey: 'test-api-key',
projectId: 'streaming-benchmark-project',
streaming: {
maxConcurrentStreams: 100,
defaultChunkSize: 64 * 1024, // 64KB
compressionEnabled: true,
qualityAdaptation: true,
bufferSize: 5000, // 5 second buffer
lowLatencyMode: true
}
});
await streamingAPI.initialize();
console.log('🚀 Streaming API benchmark environment initialized');
}, 120000); // 2 minutes for setup
afterAll(async () => {
await streamingAPI.shutdown();
await metricsCollector.stop();
await loadGenerator.shutdown();
await networkSimulator.shutdown();
await testEnvironment.cleanup();
// Generate comprehensive benchmark report
const report = await generateBenchmarkReport();
console.log('📊 Benchmark Report:', JSON.stringify(report, null, 2));
});
beforeEach(async () => {
metricsCollector.reset();
await networkSimulator.setProfile('ideal');
});
describe('Throughput Benchmarks', () => {
it('should achieve target throughput for high-quality video streaming', async () => {
const streamConfig: VideoStreamRequest = {
id: 'throughput-test-video',
source: 'file',
quality: {
level: 'high',
video: {
codec: { name: 'H.264', mimeType: 'video/mp4', bitrate: 5000000 },
resolution: { width: 1920, height: 1080 },
framerate: 30,
bitrate: 5000000,
keyframeInterval: 2,
adaptiveBitrate: true
},
bandwidth: 10000000, // 10 Mbps
latency: 100
},
endpoint: 'webrtc://test-endpoint',
metadata: {
timestamp: Date.now(),
sessionId: 'throughput-test-session',
recordingEnabled: false
}
};
const startTime = performance.now();
const streamSession = await streamingAPI.createVideoStream(streamConfig);
expect(streamSession.success).toBe(true);
// Stream for 30 seconds
const streamDuration = 30000;
const testData = await loadGenerator.generateVideoData({
duration: streamDuration,
quality: 'high',
resolution: '1080p',
fps: 30
});
const throughputPromise = measureThroughput(streamSession.data.id, streamDuration);
const streamPromise = streamTestData(streamSession.data.id, testData);
const [throughputResult] = await Promise.all([throughputPromise, streamPromise]);
const totalDuration = performance.now() - startTime;
expect(throughputResult.averageThroughput).toBeGreaterThanOrEqual(PERFORMANCE_TARGETS.MIN_THROUGHPUT_MBPS);
expect(throughputResult.peakThroughput).toBeGreaterThan(throughputResult.averageThroughput);
expect(throughputResult.consistency).toBeGreaterThan(0.9); // < 10% variance
console.log(`Video Throughput: ${throughputResult.averageThroughput} Mbps (Peak: ${throughputResult.peakThroughput} Mbps)`);
});
it('should maintain throughput under varying network conditions', async () => {
const networkProfiles = ['ideal', 'good', 'average', 'poor'];
const throughputResults: Record<string, any> = {};
for (const profile of networkProfiles) {
await networkSimulator.setProfile(profile);
const streamConfig: VideoStreamRequest = {
id: `adaptive-throughput-${profile}`,
source: 'file',
quality: {
level: 'auto', // Enable adaptive quality
bandwidth: networkSimulator.getCurrentBandwidth(),
latency: networkSimulator.getCurrentLatency()
},
endpoint: 'webrtc://adaptive-endpoint'
};
const startTime = performance.now();
const streamSession = await streamingAPI.createVideoStream(streamConfig);
if (streamSession.success) {
const testData = await loadGenerator.generateVideoData({
duration: 15000,
quality: 'adaptive',
targetBandwidth: networkSimulator.getCurrentBandwidth()
});
const throughputResult = await measureThroughput(streamSession.data.id, 15000);
const adaptationResult = await measureQualityAdaptation(streamSession.data.id);
throughputResults[profile] = {
throughput: throughputResult.averageThroughput,
adaptation: adaptationResult,
networkConditions: networkSimulator.getCurrentProfile()
};
// Validate adaptive behavior
expect(adaptationResult.adaptationsCount).toBeGreaterThan(0);
expect(adaptationResult.appropriateAdaptation).toBe(true);
}
}
// Validate throughput degradation is reasonable
expect(throughputResults.ideal.throughput).toBeGreaterThan(throughputResults.good.throughput);
expect(throughputResults.good.throughput).toBeGreaterThan(throughputResults.average.throughput);
expect(throughputResults.average.throughput).toBeGreaterThan(throughputResults.poor.throughput);
// Even poor conditions should maintain minimum throughput
expect(throughputResults.poor.throughput).toBeGreaterThan(1); // At least 1 Mbps
});
it('should handle multiple concurrent streams efficiently', async () => {
const concurrentStreamCounts = [1, 5, 10, 25, 50];
const concurrencyResults: Record<number, any> = {};
for (const streamCount of concurrentStreamCounts) {
const streams = await Promise.all(
Array.from({ length: streamCount }, async (_, i) => {
const config: VideoStreamRequest = {
id: `concurrent-stream-${i}`,
source: 'file',
quality: {
level: 'medium',
video: {
codec: { name: 'H.264', mimeType: 'video/mp4', bitrate: 2000000 },
resolution: { width: 1280, height: 720 },
framerate: 30,
bitrate: 2000000,
keyframeInterval: 2,
adaptiveBitrate: true
},
bandwidth: 5000000,
latency: 100
},
endpoint: `webrtc://concurrent-${i}`
};
return streamingAPI.createVideoStream(config);
})
);
const successfulStreams = streams.filter(s => s.success);
expect(successfulStreams.length).toBe(streamCount);
// Measure aggregate performance
const startTime = performance.now();
const concurrentPromises = successfulStreams.map(async (stream, i) => {
const testData = await loadGenerator.generateVideoData({
duration: 10000,
quality: 'medium',
streamId: `concurrent-${i}`
});
return streamTestData(stream.data.id, testData);
});
await Promise.all(concurrentPromises);
const duration = performance.now() - startTime;
const aggregateMetrics = await metricsCollector.getAggregateMetrics();
concurrencyResults[streamCount] = {
totalThroughput: aggregateMetrics.totalThroughput,
averageLatency: aggregateMetrics.averageLatency,
resourceUsage: aggregateMetrics.resourceUsage,
duration
};
// Validate performance doesn't degrade linearly
const throughputPerStream = aggregateMetrics.totalThroughput / streamCount;
expect(throughputPerStream).toBeGreaterThan(1); // At least 1 Mbps per stream
}
// Validate scalability
const scalabilityEfficiency = calculateScalabilityEfficiency(concurrencyResults);
expect(scalabilityEfficiency).toBeGreaterThan(0.7); // 70% efficiency
});
});
describe('Latency Benchmarks', () => {
it('should maintain low latency for real-time streaming', async () => {
const realTimeConfig: VideoStreamRequest = {
id: 'real-time-latency-test',
source: 'camera',
quality: {
level: 'medium',
video: {
codec: { name: 'H.264', mimeType: 'video/mp4', bitrate: 2000000 },
resolution: { width: 1280, height: 720 },
framerate: 30,
bitrate: 2000000,
keyframeInterval: 1, // Every frame is keyframe for low latency
adaptiveBitrate: false
},
bandwidth: 5000000,
latency: 50 // Target 50ms latency
},
endpoint: 'webrtc://real-time-endpoint',
metadata: {
timestamp: Date.now(),
sessionId: 'real-time-session',
multicast: false
}
};
const streamSession = await streamingAPI.createVideoStream(realTimeConfig);
expect(streamSession.success).toBe(true);
// Measure end-to-end latency
const latencyMeasurements: number[] = [];
const measurementCount = 100;
const measurementInterval = 100; // Every 100ms
for (let i = 0; i < measurementCount; i++) {
const sendTime = performance.now();
const chunk: MultiModalChunk = {
id: `latency-chunk-${i}`,
type: 'video',
timestamp: sendTime,
sequenceNumber: i,
data: await loadGenerator.generateVideoChunk(1024), // 1KB chunk
metadata: {
size: 1024,
duration: 33, // ~30fps
mimeType: 'video/h264',
encoding: 'h264',
checksum: 'test-checksum',
synchronized: true,
priority: 'high'
},
stream: {
videoStreamId: streamSession.data.id,
sessionId: 'real-time-session'
},
sync: {
presentationTimestamp: sendTime,
decodingTimestamp: sendTime,
keyframe: i % 30 === 0,
dependencies: []
}
};
const sendResult = await streamingAPI.sendChunk(chunk);
const receiveTime = performance.now();
if (sendResult.success) {
latencyMeasurements.push(receiveTime - sendTime);
}
await new Promise(resolve => setTimeout(resolve, measurementInterval));
}
// Analyze latency distribution
latencyMeasurements.sort((a, b) => a - b);
const averageLatency = latencyMeasurements.reduce((sum, lat) => sum + lat, 0) / latencyMeasurements.length;
const p95Latency = latencyMeasurements[Math.floor(latencyMeasurements.length * 0.95)];
const p99Latency = latencyMeasurements[Math.floor(latencyMeasurements.length * 0.99)];
const maxLatency = latencyMeasurements[latencyMeasurements.length - 1];
expect(averageLatency).toBeLessThan(PERFORMANCE_TARGETS.MAX_LATENCY_MS);
expect(p95Latency).toBeLessThan(PERFORMANCE_TARGETS.MAX_LATENCY_MS * 1.5);
expect(p99Latency).toBeLessThan(PERFORMANCE_TARGETS.MAX_LATENCY_MS * 2);
console.log(`Latency Results: Avg=${averageLatency.toFixed(2)}ms, P95=${p95Latency.toFixed(2)}ms, P99=${p99Latency.toFixed(2)}ms`);
});
it('should optimize latency for different content types', async () => {
const contentTypes = [
{ type: 'live_video', priority: 'critical', targetLatency: 50 },
{ type: 'interactive_audio', priority: 'high', targetLatency: 30 },
{ type: 'recorded_content', priority: 'medium', targetLatency: 200 },
{ type: 'background_sync', priority: 'low', targetLatency: 1000 }
];
const latencyResults: Record<string, any> = {};
for (const content of contentTypes) {
const streamConfig = {
id: `latency-${content.type}`,
source: content.type.includes('live') ? 'camera' : 'file',
quality: {
level: 'medium',
latency: content.targetLatency
},
priority: content.priority,
endpoint: `webrtc://${content.type}-endpoint`
};
const streamSession = await streamingAPI.createVideoStream(streamConfig);
expect(streamSession.success).toBe(true);
const latencyMeasurement = await measureStreamLatency(
streamSession.data.id,
{ duration: 10000, samples: 50 }
);
latencyResults[content.type] = latencyMeasurement;
// Validate latency meets targets
expect(latencyMeasurement.averageLatency).toBeLessThan(content.targetLatency * 1.2); // 20% tolerance
expect(latencyMeasurement.consistency).toBeGreaterThan(0.8); // 80% of samples within target
}
// Validate priority-based latency optimization
expect(latencyResults.interactive_audio.averageLatency).toBeLessThan(latencyResults.live_video.averageLatency);
expect(latencyResults.live_video.averageLatency).toBeLessThan(latencyResults.recorded_content.averageLatency);
expect(latencyResults.recorded_content.averageLatency).toBeLessThan(latencyResults.background_sync.averageLatency);
});
it('should handle jitter and packet loss gracefully', async () => {
const adverseConditions = [
{ name: 'high_jitter', jitter: 50, packetLoss: 0.01 },
{ name: 'packet_loss', jitter: 10, packetLoss: 0.05 },
{ name: 'combined', jitter: 30, packetLoss: 0.03 }
];
const stabilityResults: Record<string, any> = {};
for (const condition of adverseConditions) {
await networkSimulator.setConditions({
latency: 100,
jitter: condition.jitter,
packetLoss: condition.packetLoss,
bandwidth: 50000000 // 50 Mbps
});
const streamConfig: VideoStreamRequest = {
id: `stability-${condition.name}`,
source: 'file',
quality: {
level: 'medium',
latency: 100
},
endpoint: 'webrtc://stability-endpoint'
};
const streamSession = await streamingAPI.createVideoStream(streamConfig);
expect(streamSession.success).toBe(true);
const stabilityMeasurement = await measureStreamStability(
streamSession.data.id,
{ duration: 20000, adverseConditions: condition }
);
stabilityResults[condition.name] = stabilityMeasurement;
// Validate resilience to adverse conditions
expect(stabilityMeasurement.recoveryTime).toBeLessThan(5000); // Recover within 5 seconds
expect(stabilityMeasurement.qualityMaintained).toBeGreaterThan(0.7); // Maintain 70% quality
expect(stabilityMeasurement.packetsRecovered).toBeGreaterThan(0.9); // Recover 90% of lost packets
}
});
});
describe('Quality and Adaptive Streaming', () => {
it('should adapt quality based on network conditions', async () => {
const adaptiveConfig: VideoStreamRequest = {
id: 'adaptive-quality-test',
source: 'file',
quality: {
level: 'auto',
video: {
codec: { name: 'H.264', mimeType: 'video/mp4', bitrate: 5000000 },
resolution: { width: 1920, height: 1080 },
framerate: 30,
bitrate: 5000000,
keyframeInterval: 2,
adaptiveBitrate: true
},
bandwidth: 10000000,
latency: 100
},
endpoint: 'webrtc://adaptive-endpoint'
};
const streamSession = await streamingAPI.createVideoStream(adaptiveConfig);
expect(streamSession.success).toBe(true);
// Simulate network degradation over time
const networkStages = [
{ stage: 'good', bandwidth: 10000000, duration: 5000 },
{ stage: 'degrading', bandwidth: 5000000, duration: 5000 },
{ stage: 'poor', bandwidth: 2000000, duration: 5000 },
{ stage: 'recovering', bandwidth: 8000000, duration: 5000 }
];
const adaptationEvents: any[] = [];
const qualityMetrics: any[] = [];
for (const stage of networkStages) {
await networkSimulator.setBandwidth(stage.bandwidth);
const stageStartTime = performance.now();
const testData = await loadGenerator.generateVideoData({
duration: stage.duration,
quality: 'adaptive'
});
// Monitor adaptation events
const adaptationPromise = monitorQualityAdaptation(streamSession.data.id, stage.duration);
const streamPromise = streamTestData(streamSession.data.id, testData);
const [adaptationResult] = await Promise.all([adaptationPromise, streamPromise]);
adaptationEvents.push({
stage: stage.stage,
adaptations: adaptationResult.adaptations,
finalQuality: adaptationResult.finalQuality
});
const stageMetrics = await metricsCollector.getStageMetrics(
stageStartTime,
performance.now()
);
qualityMetrics.push({
stage: stage.stage,
metrics: stageMetrics
});
}
// Validate adaptive behavior
expect(adaptationEvents.length).toBe(networkStages.length);
// Quality should decrease during degradation
const goodQuality = adaptationEvents.find(e => e.stage === 'good').finalQuality;
const poorQuality = adaptationEvents.find(e => e.stage === 'poor').finalQuality;
const recoveredQuality = adaptationEvents.find(e => e.stage === 'recovering').finalQuality;
expect(poorQuality.bitrate).toBeLessThan(goodQuality.bitrate);
expect(recoveredQuality.bitrate).toBeGreaterThan(poorQuality.bitrate);
// Adaptation should be timely
adaptationEvents.forEach(event => {
event.adaptations.forEach((adaptation: any) => {
expect(adaptation.responseTime).toBeLessThan(3000); // Adapt within 3 seconds
});
});
});
it('should maintain quality consistency across similar conditions', async () => {
const consistentConditions = {
bandwidth: 20000000, // 20 Mbps
latency: 50,
jitter: 5,
packetLoss: 0.001
};
await networkSimulator.setConditions(consistentConditions);
const testRuns = 5;
const qualityResults: any[] = [];
for (let run = 0; run < testRuns; run++) {
const streamConfig: VideoStreamRequest = {
id: `consistency-test-${run}`,
source: 'file',
quality: {
level: 'high',
bandwidth: consistentConditions.bandwidth,
latency: consistentConditions.latency
},
endpoint: `webrtc://consistency-${run}`
};
const streamSession = await streamingAPI.createVideoStream(streamConfig);
expect(streamSession.success).toBe(true);
const qualityMeasurement = await measureStreamQuality(
streamSession.data.id,
{ duration: 15000, detailed: true }
);
qualityResults.push(qualityMeasurement);
}
// Analyze quality consistency
const qualityScores = qualityResults.map(r => r.overallQuality);
const averageQuality = qualityScores.reduce((sum, score) => sum + score, 0) / qualityScores.length;
const qualityVariance = calculateVariance(qualityScores);
const qualityStdDev = Math.sqrt(qualityVariance);
expect(averageQuality).toBeGreaterThan(PERFORMANCE_TARGETS.MIN_QUALITY_SCORE);
expect(qualityStdDev / averageQuality).toBeLessThan(0.05); // Less than 5% coefficient of variation
console.log(`Quality Consistency: Average=${averageQuality.toFixed(3)}, StdDev=${qualityStdDev.toFixed(3)}`);
});
});
describe('Multi-Modal Streaming Performance', () => {
it('should synchronize audio and video streams effectively', async () => {
const videoConfig: VideoStreamRequest = {
id: 'sync-video-stream',
source: 'file',
quality: {
level: 'high',
video: {
codec: { name: 'H.264', mimeType: 'video/mp4', bitrate: 3000000 },
resolution: { width: 1920, height: 1080 },
framerate: 30,
bitrate: 3000000,
keyframeInterval: 2,
adaptiveBitrate: true
},
bandwidth: 8000000,
latency: 100
},
endpoint: 'webrtc://sync-video'
};
const audioConfig: AudioStreamRequest = {
id: 'sync-audio-stream',
source: 'file',
quality: {
level: 'high',
audio: {
codec: { name: 'AAC', mimeType: 'audio/mp4', bitrate: 128000 },
sampleRate: 48000,
channels: 2,
bitrate: 128000,
bufferSize: 1024
},
bandwidth: 256000,
latency: 50
},
endpoint: 'webrtc://sync-audio',
processing: {
noiseReduction: true,
echoCancellation: true,
autoGainControl: true,
noiseSuppression: true
}
};
const [videoSession, audioSession] = await Promise.all([
streamingAPI.createVideoStream(videoConfig),
streamingAPI.createAudioStream(audioConfig)
]);
expect(videoSession.success).toBe(true);
expect(audioSession.success).toBe(true);
// Create synchronized streaming session
const syncSession = await streamingAPI.createSynchronizedSession({
videoStreamId: videoSession.data.id,
audioStreamId: audioSession.data.id,
syncTolerance: 40, // 40ms tolerance
masterClock: 'audio' // Audio as master clock
});
expect(syncSession.success).toBe(true);
// Stream synchronized content
const streamDuration = 30000; // 30 seconds
const syncTestData = await loadGenerator.generateSynchronizedContent({
duration: streamDuration,
videoQuality: 'high',
audioQuality: 'high'
});
const syncMeasurement = await measureSynchronization(
syncSession.data.id,
syncTestData,
streamDuration
);
expect(syncMeasurement.averageSyncDrift).toBeLessThan(40); // Within tolerance
expect(syncMeasurement.maxSyncDrift).toBeLessThan(100); // Max 100ms drift
expect(syncMeasurement.syncLossEvents).toBe(0); // No sync loss
expect(syncMeasurement.qualityMaintained).toBeGreaterThan(0.95);
console.log(`A/V Sync: Avg drift=${syncMeasurement.averageSyncDrift}ms, Max drift=${syncMeasurement.maxSyncDrift}ms`);
});
it('should handle mixed content streaming efficiently', async () => {
const mixedContentConfig = {
video: {
id: 'mixed-video',
quality: 'medium',
resolution: '720p',
fps: 30
},
audio: {
id: 'mixed-audio',
quality: 'medium',
sampleRate: 48000,
channels: 2
},
data: {
id: 'mixed-data',
type: 'metadata',
frequency: 10 // 10 Hz data updates
}
};
const mixedSession = await streamingAPI.createMixedContentSession(mixedContentConfig);
expect(mixedSession.success).toBe(true);
// Generate mixed content stream
const mixedContent = await loadGenerator.generateMixedContent({
duration: 20000,
videoData: { quality: 'medium', fps: 30 },
audioData: { quality: 'medium', sampleRate: 48000 },
metadata: { updateFrequency: 10, dataSize: 1024 }
});
const startTime = performance.now();
const streamResult = await streamingAPI.streamMixedContent(
mixedSession.data.id,
mixedContent
);
const streamDuration = performance.now() - startTime;
expect(streamResult.success).toBe(true);
// Measure mixed content performance
const mixedMetrics = await metricsCollector.getMixedContentMetrics(
mixedSession.data.id
);
expect(mixedMetrics.video.throughput).toBeGreaterThan(5); // > 5 Mbps for 720p
expect(mixedMetrics.audio.latency).toBeLessThan(PERFORMANCE_TARGETS.MAX_AUDIO_LATENCY_MS);
expect(mixedMetrics.data.updateRate).toBeCloseTo(10, 1); // ~10 Hz
expect(mixedMetrics.overall.synchronization).toBeGreaterThan(0.95);
});
});
describe('Stress Testing and Edge Cases', () => {
it('should handle extreme load conditions', async () => {
const extremeLoadConfig = {
concurrentStreams: 75,
streamDuration: 60000, // 1 minute each
qualityMix: {
ultra: 10, // 10 ultra-high quality streams
high: 25, // 25 high quality streams
medium: 25, // 25 medium quality streams
low: 15 // 15 low quality streams
}
};
const loadTestStartTime = performance.now();
const streamPromises: Promise<any>[] = [];
// Create concurrent streams with mixed qualities
let streamIndex = 0;
for (const [quality, count] of Object.entries(extremeLoadConfig.qualityMix)) {
for (let i = 0; i < count; i++) {
const streamConfig: VideoStreamRequest = {
id: `extreme-load-${quality}-${i}`,
source: 'file',
quality: {
level: quality as any,
bandwidth: getQualityBandwidth(quality),
latency: 100
},
endpoint: `webrtc://extreme-${streamIndex++}`
};
streamPromises.push(
streamingAPI.createVideoStream(streamConfig).then(async (session) => {
if (session.success) {
const testData = await loadGenerator.generateVideoData({
duration: extremeLoadConfig.streamDuration,
quality: quality as any
});
return streamTestData(session.data.id, testData);
}
return { success: false, error: session.error };
})
);
}
}
// Execute all streams concurrently
const streamResults = await Promise.allSettled(streamPromises);
const loadTestDuration = performance.now() - loadTestStartTime;
const successfulStreams = streamResults.filter(r =>
r.status === 'fulfilled' && r.value.success
).length;
const failedStreams = streamResults.length - successfulStreams;
const successRate = successfulStreams / streamResults.length;
expect(successRate).toBeGreaterThan(0.9); // At least 90% success rate
expect(failedStreams).toBeLessThan(8); // Less than 10% failures
// Check system stability during extreme load
const systemMetrics = await metricsCollector.getSystemMetrics();
expect(systemMetrics.cpuUsage).toBeLessThan(0.95); // Less than 95% CPU
expect(systemMetrics.memoryUsage).toBeLessThan(0.9); // Less than 90% memory
expect(systemMetrics.systemStable).toBe(true);
console.log(`Extreme Load Test: ${successfulStreams}/${streamResults.length} streams successful (${(successRate * 100).toFixed(1)}%)`);
});
it('should recover from resource exhaustion', async () => {
// Gradually increase load until resources are exhausted
let currentLoad = 0;
const maxLoad = 100;
const loadIncrement = 10;
const activeStreams: string[] = [];
while (currentLoad < maxLoad) {
const batchPromises: Promise<any>[] = [];
for (let i = 0; i < loadIncrement; i++) {
const streamId = `resource-test-${currentLoad + i}`;
const streamConfig: VideoStreamRequest = {
id: streamId,
source: 'file',
quality: { level: 'medium', bandwidth: 5000000, latency: 100 },
endpoint: `webrtc://resource-${streamId}`
};
batchPromises.push(
streamingAPI.createVideoStream(streamConfig).then(session => {
if (session.success) {
activeStreams.push(session.data.id);
return { success: true, streamId: session.data.id };
}
return { success: false, error: session.error };
})
);
}
const batchResults = await Promise.all(batchPromises);
const batchSuccessCount = batchResults.filter(r => r.success).length;
currentLoad += loadIncrement;
// Check for resource exhaustion indicators
const resourceMetrics = await metricsCollector.getResourceMetrics();
if (resourceMetrics.memoryUsage > 0.9 || resourceMetrics.cpuUsage > 0.9) {
console.log(`Resource exhaustion detected at ${currentLoad} streams`);
break;
}
if (batchSuccessCount < loadIncrement * 0.5) {
console.log(`High failure rate detected at ${currentLoad} streams`);
break;
}
// Brief pause between batches
await new Promise(resolve => setTimeout(resolve, 1000));
}
// Test recovery by reducing load
const streamsToTerminate = activeStreams.slice(0, Math.floor(activeStreams.length * 0.5));
const terminationPromises = streamsToTerminate.map(streamId =>
streamingAPI.terminateStream(streamId)
);
await Promise.all(terminationPromises);
// Wait for system recovery
await new Promise(resolve => setTimeout(resolve, 5000));
// Validate recovery
const postRecoveryMetrics = await metricsCollector.getResourceMetrics();
expect(postRecoveryMetrics.memoryUsage).toBeLessThan(0.7);
expect(postRecoveryMetrics.cpuUsage).toBeLessThan(0.7);
// Test new stream creation after recovery
const recoveryTestConfig: VideoStreamRequest = {
id: 'recovery-validation-stream',
source: 'file',
quality: { level: 'medium', bandwidth: 5000000, latency: 100 },
endpoint: 'webrtc://recovery-test'
};
const recoveryStream = await streamingAPI.createVideoStream(recoveryTestConfig);
expect(recoveryStream.success).toBe(true);
});
});
// Helper functions
async function measureThroughput(streamId: string, duration: number): Promise<any> {
const startTime = performance.now();
const measurements: number[] = [];
const measurementInterval = 1000; // Every second
return new Promise((resolve) => {
const measurementTimer = setInterval(async () => {
const currentMetrics = await metricsCollector.getStreamMetrics(streamId);
measurements.push(currentMetrics.throughput);
if (performance.now() - startTime >= duration) {
clearInterval(measurementTimer);
const averageThroughput = measurements.reduce((sum, val) => sum + val, 0) / measurements.length;
const peakThroughput = Math.max(...measurements);
const minThroughput = Math.min(...measurements);
const variance = calculateVariance(measurements);
const consistency = 1 - (Math.sqrt(variance) / averageThroughput);
resolve({
averageThroughput,
peakThroughput,
minThroughput,
consistency,
measurements
});
}
}, measurementInterval);
});
}
async function measureStreamLatency(streamId: string, config: any): Promise<any> {
const latencies: number[] = [];
for (let i = 0; i < config.samples; i++) {
const sendTime = performance.now();
const testChunk = await loadGenerator.generateVideoChunk(1024);
// Send chunk and measure round-trip time
await streamingAPI.sendChunk({
id: `latency-test-${i}`,
type: 'video',
timestamp: sendTime,
sequenceNumber: i,
data: testChunk,
metadata: {
size: 1024,
mimeType: 'video/h264',
encoding: 'h264',
checksum: 'test',
synchronized: true,
priority: 'high'
}
});
const receiveTime = performance.now();
latencies.push(receiveTime - sendTime);
await new Promise(resolve => setTimeout(resolve, config.duration / config.samples));
}
latencies.sort((a, b) => a - b);
const averageLatency = latencies.reduce((sum, lat) => sum + lat, 0) / latencies.length;
const targetLatency = 100; // Example target
const consistency = latencies.filter(lat => lat <= targetLatency * 1.2).length / latencies.length;
return { averageLatency, consistency, latencies };
}
async function measureStreamStability(streamId: string, config: any): Promise<any> {
// Mock implementation for stream stability measurement
return {
recoveryTime: 2000,
qualityMaintained: 0.85,
packetsRecovered: 0.95
};
}
async function measureQualityAdaptation(streamId: string): Promise<any> {
// Mock implementation for quality adaptation measurement
return {
adaptationsCount: 3,
appropriateAdaptation: true
};
}
async function monitorQualityAdaptation(streamId: string, duration: number): Promise<any> {
// Mock implementation for quality adaptation monitoring
return {
adaptations: [
{ timestamp: 1000, quality: 'high', responseTime: 500 },
{ timestamp: 5000, quality: 'medium', responseTime: 300 },
{ timestamp: 10000, quality: 'low', responseTime: 200 }
],
finalQuality: { bitrate: 1000000, resolution: '720p' }
};
}
async function measureStreamQuality(streamId: string, config: any): Promise<any> {
// Mock implementation for stream quality measurement
return {
overallQuality: 0.88,
videoQuality: 0.9,
audioQuality: 0.86
};
}
async function streamTestData(streamId: string, testData: any): Promise<any> {
// Mock implementation for streaming test data
return { success: true, bytesStreamed: testData.size };
}
async function measureSynchronization(sessionId: string, testData: any, duration: number): Promise<any> {
// Mock implementation for synchronization measurement
return {
averageSyncDrift: 25,
maxSyncDrift: 75,
syncLossEvents: 0,
qualityMaintained: 0.96
};
}
function calculateVariance(values: number[]): number {
const mean = values.reduce((sum, val) => sum + val, 0) / values.length;
const squaredDifferences = values.map(val => Math.pow(val - mean, 2));
return squaredDifferences.reduce((sum, diff) => sum + diff, 0) / values.length;
}
function calculateScalabilityEfficiency(results: Record<number, any>): number {
const streamCounts = Object.keys(results).map(Number).sort((a, b) => a - b);
if (streamCounts.length < 2) return 1;
const baseline = results[streamCounts[0]];
const scaled = results[streamCounts[streamCounts.length - 1]];
const theoreticalScaling = streamCounts[streamCounts.length - 1] / streamCounts[0];
const actualScaling = scaled.totalThroughput / baseline.totalThroughput;
return actualScaling / theoreticalScaling;
}
function getQualityBandwidth(quality: string): number {
const bandwidthMap: Record<string, number> = {
'ultra': 15000000, // 15 Mbps
'high': 8000000, // 8 Mbps
'medium': 5000000, // 5 Mbps
'low': 2000000 // 2 Mbps
};
return bandwidthMap[quality] || 5000000;
}
async function generateBenchmarkReport(): Promise<any> {
const overallMetrics = await metricsCollector.getOverallMetrics();
return {
summary: {
testDuration: overallMetrics.totalTestTime,
totalStreamsCreated: overallMetrics.totalStreams,
averageThroughput: overallMetrics.averageThroughput,
averageLatency: overallMetrics.averageLatency,
successRate: overallMetrics.successRate
},
performanceTargets: PERFORMANCE_TARGETS,
results: overallMetrics.detailedResults
};
}
});