Add FSSTView encoding: a ListView-style FSST array #8191
CodSpeed HQ / CodSpeed Performance Analysis
failed
Jun 1, 2026 in 0s
Performance Regression: -11.37%
⚠️ 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 regressed benchmark
✅ 1274 untouched benchmarks
🆕 8 new benchmarks
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | baseline_lt[16, 65536] |
217.4 µs | 245.2 µs | -11.37% |
| 🆕 | Simulation | chain_fsst[FewLong] |
N/A | 2 ms | N/A |
| 🆕 | Simulation | chain_view[FewLong] |
N/A | 893.1 µs | N/A |
| 🆕 | Simulation | single_filter_fsst[ManyShort] |
N/A | 2.2 ms | N/A |
| 🆕 | Simulation | single_filter_view[ManyShort] |
N/A | 1.6 ms | N/A |
| 🆕 | Simulation | chain_fsst[ManyShort] |
N/A | 17.8 ms | N/A |
| 🆕 | Simulation | chain_view[ManyShort] |
N/A | 13.7 ms | N/A |
| 🆕 | Simulation | single_filter_fsst[FewLong] |
N/A | 421.2 µs | N/A |
| 🆕 | Simulation | single_filter_view[FewLong] |
N/A | 322.1 µs | N/A |
Tip
Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.
Comparing claude/fsstview-conversion-floor-kRAeg (d1418cf) with develop (f7294db)
Loading