feat(cuda): export FSST directly to Arrow varbin - #8787
Merged
CodSpeed HQ / CodSpeed Performance Analysis
succeeded
Jul 16, 2026
Performance Gate Passed
⚠️ 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.
⚡ 6 improved benchmarks
✅ 1691 untouched benchmarks
🆕 5 new benchmarks
⏩ 10 skipped benchmarks1
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ⚡ | WallTime | cuda/bitpacked_u8/unpack/3bw[100M] |
646.3 µs | 300.3 µs | ×2.2 |
| ⚡ | WallTime | cuda/bitpacked_patched_u8/unpack/1%[100M] |
768.9 µs | 381.8 µs | ×2 |
| ⚡ | WallTime | cuda/bitpacked_patched_u8/unpack/10%[100M] |
828.6 µs | 477.3 µs | +73.58% |
| ⚡ | WallTime | cuda/bitpacked_patched_u16/unpack/1%[100M] |
712.3 µs | 595.4 µs | +19.64% |
| ⚡ | WallTime | cuda/bitpacked_patched_u16/unpack/10%[100M] |
831 µs | 714.1 µs | +16.36% |
| ⚡ | WallTime | cuda/bitpacked_u16/unpack/5bw[100M] |
634.8 µs | 558.1 µs | +13.73% |
| 🆕 | WallTime | cuda/fsst/decompress_to_varbin[10M] |
N/A | 19.3 ms | N/A |
| 🆕 | WallTime | cuda/fsst/decompress_to_varbinview[10M] |
N/A | 19.9 ms | N/A |
| 🆕 | WallTime | cuda/fsst/export_binary_view[10M] |
N/A | 20.1 ms | N/A |
| 🆕 | WallTime | cuda/fsst/export_binary[10M] |
N/A | 19.4 ms | N/A |
| 🆕 | WallTime | cuda/fsst/export_utf8_view[10M] |
N/A | 20 ms | N/A |
Tip
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Comparing ad/cuda-fsst-varbin-export (2cc117e) with develop (54b045b)
Footnotes
-
10 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. ↩
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