Add a dormant v4 RDS Postgres dual-write to the CI benchmark emitters - #8513
Merged
CodSpeed HQ / CodSpeed Performance Analysis
failed
Jun 19, 2026 in 0s
Performance Regression: -14.56%
⚠️ Unknown Walltime execution environment detected
Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.
For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.
⚡ 1 improved benchmark
❌ 7 regressed benchmarks
✅ 1573 untouched benchmarks
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | decompress_rd[f64, (10000, 0.01)] |
108.9 µs | 139.3 µs | -21.82% |
| ❌ | Simulation | decompress_rd[f64, (10000, 0.1)] |
109.2 µs | 139.6 µs | -21.79% |
| ❌ | Simulation | decompress_rd[f64, (10000, 0.0)] |
108.9 µs | 139.2 µs | -21.77% |
| ❌ | Simulation | decompress_rd[f32, (100000, 0.0)] |
496.1 µs | 583.9 µs | -15.04% |
| ❌ | Simulation | decompress_rd[f32, (10000, 0.1)] |
78.2 µs | 91.4 µs | -14.4% |
| ❌ | Simulation | decompress_rd[f32, (10000, 0.01)] |
78.2 µs | 91.1 µs | -14.16% |
| ❌ | Simulation | decompress_rd[f32, (10000, 0.0)] |
78.7 µs | 91.3 µs | -13.88% |
| ⚡ | Simulation | eq_i64_constant |
317.9 µs | 287.9 µs | +10.42% |
Tip
Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.
Comparing ct/bench-v4-emitter-dual-write (aa5a15a) with develop (9814173)
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