[daily-cli-performance] Daily CLI Performance Report - 2026-08-19

[github-actions[bot]]

📊 Performance Summary

Date: 2026-08-19
Analysis Status: ⚠️ 3 regression(s) detected (suspected environment noise — see below)

🎯 Key Metrics

• Total Benchmarks: 9
• Stable: 2
• Warnings: 0
• Regressions: 3
• Improvements: 4

⚠️ Environment Anomaly Notice

This run followed a ~6-week gap since the last recorded benchmark (2026-07-06 → 2026-08-19), during which only a single commit touched pkg/workflow/pkg/cli. The Go module cache and build cache in this sandbox had to be freshly initialized (GOCACHE/GOMODCACHE redirected due to permission restrictions on the default $HOME/go), forcing cold compilation/module downloads during the run. The three flagged "regressions" below (CompileMCPWorkflow +1012%, ParseWorkflow +219%, ExtractWorkflowNameFromFile +961%) are implausibly large for a single commit and are most consistent with cold-cache/I/O overhead rather than a genuine code regression. No regression issues are being opened for this run; recommend re-running benchmarks with a warm cache to confirm before treating these as real.

📈 Detailed Benchmark Results

✓ CompileComplexWorkflow

• Current: 5.68ms
• Historical Median: 5.62ms
• Change: +1.1%
• Memory: 2110993 B/op
• Allocations: 16486 allocs/op
• Status: ✓ STABLE: 1.1% change from historical average

⚠️ CompileMCPWorkflow

• Current: 3.77ms
• Historical Median: 338.90μs
• Change: +1012.2%
• Memory: 1334876 B/op
• Allocations: 12594 allocs/op
• Status: ⚠️ REGRESSION: 1012.2% slower than historical average

✨ CompileMemoryUsage

• Current: 4.63ms
• Historical Median: 4.92ms
• Change: -5.8%
• Memory: 1920060 B/op
• Allocations: 14617 allocs/op
• Status: ✅ IMPROVEMENT: -5.8% faster than historical average

✓ CompileSimpleWorkflow

• Current: 3.94ms
• Historical Median: 4.00ms
• Change: -1.6%
• Memory: 1322734 B/op
• Allocations: 10923 allocs/op
• Status: ✓ STABLE: -1.5% change from historical average

⚠️ ExtractWorkflowNameFromFile

• Current: 76.96μs
• Historical Median: 7.25μs
• Change: +961.1%
• Memory: 216 B/op
• Allocations: 4 allocs/op
• Status: ⚠️ REGRESSION: 961.1% slower than historical average

✨ FindIncludesInContent

• Current: 150.2ns
• Historical Median: 162ns
• Change: -7.6%
• Memory: 64 B/op
• Allocations: 1 allocs/op
• Status: ✅ IMPROVEMENT: -7.6% faster than historical average

⚠️ ParseWorkflow

• Current: 860.54μs
• Historical Median: 270.10μs
• Change: +218.6%
• Memory: 285142 B/op
• Allocations: 5530 allocs/op
• Status: ⚠️ REGRESSION: 218.6% slower than historical average

✨ Validation

• Current: 14.22μs
• Historical Median: 29.11μs
• Change: -51.1%
• Memory: 1426 B/op
• Allocations: 67 allocs/op
• Status: ✅ IMPROVEMENT: -51.1% faster than historical average

✨ YAMLGeneration

• Current: 3.26ms
• Historical Median: 3.92ms
• Change: -16.9%
• Memory: 1296542 B/op
• Allocations: 10378 allocs/op
• Status: ✅ IMPROVEMENT: -16.9% faster than historical average

📉 Historical Comparisons

Trend Analysis

⚠️ Regressions (suspected environment noise, not filed as issues)

• CompileMCPWorkflow: +1012.2% slower (was 338.90μs, now 3.77ms)
• ParseWorkflow: +218.6% slower (was 270.10μs, now 860.54μs)
• ExtractWorkflowNameFromFile: +961.1% slower (was 7.25μs, now 76.96μs)

✨ Improvements

• CompileMemoryUsage: -5.8% faster (was 4.92ms, now 4.63ms)
• Validation: -51.1% faster (was 29.11μs, now 14.22μs)
• YAMLGeneration: -16.9% faster (was 3.92ms, now 3.26ms)
• FindIncludesInContent: -7.6% faster (was 162ns, now 150.2ns)

💡 Recommendations

1. Re-run make bench-performance on a runner with a warm Go build/module cache to confirm whether the flagged regressions persist
2. If confirmed with a warm cache, bisect the single commit merged in this window (Harden command argument validation for pip/uv checks and npm lockfile execution context #53957) for compilation-path impact
3. Continue monitoring performance daily; magnitudes above ~900% for isolated benchmarks should be treated as environment/methodology anomalies until reproduced

Generated by ⚡ Daily CLI Performance Agent · auto · 42.3 AIC · ⌖ 11.5 AIC · ⊞ 18.8K · ◷

• expires on Aug 22, 2026, 7:14 AM UTC-08:00