Use approximate cardinality to decide whether to use dict compression #7759
Performance Regression: -24.9%
⚠️ 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.
⚠️ Different runtime environments detected
Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.
⚡ 3 improved benchmarks
❌ 4 regressed benchmarks
✅ 1162 untouched benchmarks
⏩ 138 skipped benchmarks1
⚠️ Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | varbinview_zip_fragmented_mask |
6.5 ms | 7.3 ms | -10.29% |
| ❌ | Simulation | decode_primitives[u8, (1000, 2)] |
15.8 µs | 17.6 µs | -10.29% |
| ⚡ | Simulation | encode_varbinview[(1000, 2)] |
243.8 µs | 168.1 µs | +45.05% |
| ⚡ | Simulation | encode_varbin[(10000, 512)] |
1,029.1 µs | 934.6 µs | +10.11% |
| ❌ | Simulation | varbinview_zip_block_mask |
2.9 ms | 3.7 ms | -21.65% |
| ❌ | Simulation | new_bp_prim_test_between[i64, 32768] |
177.3 µs | 236.1 µs | -24.9% |
| ⚡ | Simulation | dict_compress_string |
8.2 ms | 7.4 ms | +10.54% |
Comparing rk/cardinality-estimator (7fa9309) with develop (5e5572b)
Footnotes
-
138 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩