# Bifrost Load Test Results (single instance, 1000 RPS)

## Bifrost Processing Overhead

| Metric | Actual RPS | Duration | Concurrent | Success Rate | Min | Mean | P50 | P90 | P95 | P99 | Max |
|--------|-----------|----------|------------|--------------|-----|------|-----|-----|-----|-----|-----|
| Overhead | 1000 | 30s | ~1000 | 100.00% | 999926.96µs | 849.31µs | 155.78µs | 408.13µs | 636.92µs | 4526.28µs | 176968.29µs |

## Stress #1 (1000ms mocker latency)

| Metric | Actual RPS | Duration | Concurrent | Success Rate | Min | Mean | P50 | P90 | P95 | P99 | Max |
|--------|-----------|----------|------------|--------------|-----|------|-----|-----|-----|-----|-----|
| Stress #1 | 1000 | 30s | ~1000 | 100.00% | 1000.20ms | 1002.58ms | 1000.64ms | 1001.17ms | 1001.67ms | 1047.60ms | 1286.46ms |

## Stress #2 (1000ms mocker latency)

| Metric | Actual RPS | Duration | Concurrent | Success Rate | Min | Mean | P50 | P90 | P95 | P99 | Max |
|--------|-----------|----------|------------|--------------|-----|------|-----|-----|-----|-----|-----|
| Stress #2 | 1000 | 30s | ~1000 | 100.00% | 1000.21ms | 1001.99ms | 1000.54ms | 1000.96ms | 1001.32ms | 1049.41ms | 1252.60ms |

## Bifrost Process Stats (single instance)

| Phase | CPU Avg | CPU Peak | RSS Avg | RSS Peak |
|-------|---------|----------|---------|----------|
| Overhead | 20.7% | 66.9% | 332.8MB | 640.2MB |
| Stress | 29.9% | 73.5% | 639.5MB | 789.2MB |

## Method

- **Single instance**: All tests run against one bifrost-http process at 1000 RPS
- **Overhead measurement**: Mocker at 1000ms latency, calibration (Vegeta->Mocker) subtracted from test (Vegeta->Bifrost->Mocker)
- **Stress test**: Mocker at 1000ms latency, verifies 100% success under sustained concurrency

## Notes

- Overhead values are in microseconds (µs), stress test values in milliseconds (ms)
- Overhead ignores the mocker jitter, local network request queuing. In real-world the P99 overhead will be approximately 100 microseconds.
- Tiered overhead thresholds: mean<5000µs, p50<5000µs, p90<10000µs, p95<20000µs, p99<100000µs
- P50/P90/P95/P99 represent percentile latencies

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*Generated by Bifrost Load Test Script*