Fix+reduce allocations #668
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Adds `WithDecodeBuffersBelow` to tweak buffer switch-over. Fixes #666 and generally reduces Reader allocations.
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owen-d
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Sep 27, 2022
**What this PR does / why we need it**: Bring in various improvements from upstream, particularly klauspost/compress#668 **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - NA Documentation added - NA Tests updated - [x] `CHANGELOG.md` updated - NA Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` **Benchmarks** (using changes from #7246, ignoring lines that didn't change much) ``` name old time/op new time/op delta Write/ordered-flate-4 81.5ms ± 5% 78.7ms ± 2% -3.39% (p=0.016 n=5+5) Read/none_66_kB-4 4.16ms ± 6% 3.93ms ± 4% -5.51% (p=0.032 n=5+5) Read/flate_66_kB-4 168ms ± 4% 179ms ±11% +6.50% (p=0.032 n=5+5) Read/zstd_66_kB-4 334ms ±16% 152ms ± 3% -54.57% (p=0.008 n=5+5) Read/none_262_kB-4 3.93ms ± 1% 3.81ms ± 2% -2.91% (p=0.008 n=5+5) Read/zstd_262_kB-4 369ms ± 8% 131ms ± 1% -64.62% (p=0.008 n=5+5) Read/zstd_524_kB-4 466ms ±17% 146ms ± 2% -68.68% (p=0.008 n=5+5) Read/sample_zstd_66_kB-4 420ms ±18% 224ms ± 1% -46.69% (p=0.016 n=5+4) Read/sample_gzip_262_kB-4 214ms ± 1% 218ms ± 1% +1.90% (p=0.016 n=5+5) Read/sample_zstd_262_kB-4 418ms ±21% 200ms ± 2% -52.15% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 576ms ±35% 234ms ± 1% -59.42% (p=0.008 n=5+5) name old speed new speed delta Write/ordered-gzip-4 267MB/s ±10% 284MB/s ± 2% +6.51% (p=0.008 n=5+5) Write/ordered-flate-4 274MB/s ± 4% 291MB/s ± 2% +6.49% (p=0.008 n=5+5) Read/none_66_kB-4 1.82GB/s ± 6% 1.92GB/s ± 4% +5.78% (p=0.032 n=5+5) Read/gzip_66_kB-4 669MB/s ± 4% 698MB/s ± 1% +4.30% (p=0.008 n=5+5) Read/zstd_66_kB-4 425MB/s ±14% 930MB/s ± 3% +119.12% (p=0.008 n=5+5) Read/none_262_kB-4 1.93GB/s ± 1% 1.99GB/s ± 2% +3.00% (p=0.008 n=5+5) Read/gzip_262_kB-4 701MB/s ± 5% 721MB/s ± 2% +2.96% (p=0.032 n=5+5) Read/zstd_262_kB-4 357MB/s ± 8% 1009MB/s ± 1% +182.89% (p=0.008 n=5+5) Read/flate_524_kB-4 750MB/s ± 1% 763MB/s ± 1% +1.74% (p=0.008 n=5+5) Read/zstd_524_kB-4 365MB/s ±18% 1149MB/s ± 2% +215.34% (p=0.008 n=5+5) Read/sample_zstd_66_kB-4 341MB/s ±17% 616MB/s ± 9% +80.67% (p=0.008 n=5+5) Read/sample_zstd_262_kB-4 318MB/s ±18% 658MB/s ± 2% +107.08% (p=0.016 n=5+4) Read/sample_gzip_524_kB-4 521MB/s ± 1% 530MB/s ± 1% +1.72% (p=0.032 n=5+5) Read/sample_zstd_524_kB-4 299MB/s ±28% 718MB/s ± 1% +140.23% (p=0.008 n=5+5) name old %compressed new %compressed delta Write/ordered-gzip-4 6.89 ± 0% 6.73 ± 0% -2.32% (p=0.000 n=5+4) Write/ordered-flate-4 6.89 ± 0% 6.69 ± 0% -2.84% (p=0.008 n=5+5) Write/ordered-zstd-4 6.17 ± 0% 6.16 ± 0% -0.02% (p=0.008 n=5+5) Write/unordered-gzip-4 6.89 ± 0% 6.73 ± 0% -2.32% (p=0.008 n=5+5) Write/unordered-flate-4 6.89 ± 0% 6.70 ± 0% -2.81% (p=0.000 n=4+5) Write/unordered-zstd-4 6.17 ± 0% 6.16 ± 0% -0.02% (p=0.008 n=5+5) name old alloc/op new alloc/op delta Write/unordered-lz4-4 18.8MB ± 4% 17.8MB ± 1% -5.28% (p=0.008 n=5+5) Read/gzip_66_kB-4 713kB ± 0% 735kB ± 1% +2.99% (p=0.008 n=5+5) Read/flate_66_kB-4 715kB ± 0% 733kB ± 0% +2.57% (p=0.008 n=5+5) Read/zstd_66_kB-4 423MB ± 0% 1MB ± 0% -99.65% (p=0.016 n=5+4) Read/gzip_262_kB-4 198kB ± 0% 204kB ± 0% +3.07% (p=0.016 n=4+5) Read/lz4-64k_262_kB-4 169kB ± 0% 169kB ± 0% -0.07% (p=0.000 n=5+4) Read/flate_262_kB-4 197kB ± 0% 205kB ± 0% +3.77% (p=0.008 n=5+5) Read/zstd_262_kB-4 553MB ± 0% 0MB ± 0% -99.92% (p=0.016 n=5+4) Read/gzip_524_kB-4 96.2kB ± 0% 98.8kB ± 0% +2.71% (p=0.016 n=4+5) Read/flate_524_kB-4 95.4kB ± 0% 98.7kB ± 0% +3.46% (p=0.008 n=5+5) Read/zstd_524_kB-4 786MB ± 0% 1MB ± 6% -99.93% (p=0.008 n=5+5) Read/sample_gzip_66_kB-4 686kB ± 0% 703kB ± 0% +2.48% (p=0.029 n=4+4) Read/sample_flate_66_kB-4 688kB ± 0% 710kB ± 1% +3.08% (p=0.016 n=4+5) Read/sample_zstd_66_kB-4 423MB ± 0% 2MB ± 0% -99.59% (p=0.016 n=5+4) Read/sample_gzip_262_kB-4 194kB ± 0% 200kB ± 0% +3.10% (p=0.016 n=4+5) Read/sample_flate_262_kB-4 194kB ± 0% 201kB ± 0% +3.77% (p=0.016 n=4+5) Read/sample_zstd_262_kB-4 553MB ± 0% 0MB ± 0% -99.91% (p=0.016 n=5+4) Read/sample_gzip_524_kB-4 95.4kB ± 0% 97.9kB ± 0% +2.65% (p=0.008 n=5+5) Read/sample_flate_524_kB-4 95.2kB ± 0% 98.8kB ± 0% +3.71% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 786MB ± 0% 1MB ± 0% -99.90% (p=0.008 n=5+5) name old allocs/op new allocs/op delta Write/ordered-gzip-4 701 ± 0% 718 ± 1% +2.40% (p=0.008 n=5+5) Write/ordered-lz4-256k-4 656 ± 0% 657 ± 0% +0.21% (p=0.048 n=5+5) Write/ordered-flate-4 626 ± 0% 634 ± 1% +1.37% (p=0.008 n=5+5) Write/ordered-zstd-4 2.07k ± 0% 1.44k ± 0% -30.49% (p=0.008 n=5+5) Write/unordered-gzip-4 418k ± 0% 428k ± 0% +2.39% (p=0.008 n=5+5) Write/unordered-flate-4 418k ± 0% 430k ± 0% +2.89% (p=0.008 n=5+5) Write/unordered-zstd-4 469k ± 0% 468k ± 0% -0.12% (p=0.008 n=5+5) Read/gzip_66_kB-4 13.2k ± 0% 13.5k ± 0% +2.54% (p=0.016 n=5+4) Read/lz4-256k_66_kB-4 13.7k ± 0% 13.7k ± 0% -0.01% (p=0.029 n=4+4) Read/flate_66_kB-4 13.2k ± 0% 13.6k ± 0% +2.72% (p=0.008 n=5+5) Read/zstd_66_kB-4 18.0k ± 1% 10.8k ± 0% -40.19% (p=0.008 n=5+5) Read/gzip_262_kB-4 4.61k ± 0% 4.76k ± 0% +3.17% (p=0.016 n=4+5) Read/flate_262_kB-4 4.61k ± 0% 4.78k ± 0% +3.62% (p=0.008 n=5+5) Read/zstd_262_kB-4 7.10k ± 2% 2.54k ± 0% -64.22% (p=0.016 n=5+4) Read/gzip_524_kB-4 2.62k ± 0% 2.69k ± 0% +2.36% (p=0.016 n=4+5) Read/flate_524_kB-4 2.62k ± 0% 2.70k ± 0% +3.09% (p=0.008 n=5+5) Read/zstd_524_kB-4 6.13k ± 2% 1.63k ± 0% -73.40% (p=0.008 n=5+5) Read/sample_gzip_66_kB-4 13.2k ± 0% 13.5k ± 0% +2.54% (p=0.029 n=4+4) Read/sample_flate_66_kB-4 13.2k ± 0% 13.6k ± 0% +2.88% (p=0.016 n=4+5) Read/sample_zstd_66_kB-4 18.0k ± 1% 10.8k ± 0% -40.00% (p=0.008 n=5+5) Read/sample_gzip_262_kB-4 4.63k ± 0% 4.77k ± 0% +3.16% (p=0.016 n=4+5) Read/sample_flate_262_kB-4 4.62k ± 0% 4.79k ± 0% +3.61% (p=0.016 n=4+5) Read/sample_zstd_262_kB-4 7.12k ± 1% 2.54k ± 0% -64.28% (p=0.008 n=5+5) Read/sample_gzip_524_kB-4 2.63k ± 0% 2.69k ± 0% +2.36% (p=0.008 n=5+5) Read/sample_flate_524_kB-4 2.63k ± 0% 2.72k ± 0% +3.31% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 6.11k ± 2% 1.64k ± 0% -73.23% (p=0.008 n=5+5) ```
lxwzy
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Nov 7, 2022
**What this PR does / why we need it**: Bring in various improvements from upstream, particularly klauspost/compress#668 **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - NA Documentation added - NA Tests updated - [x] `CHANGELOG.md` updated - NA Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` **Benchmarks** (using changes from grafana#7246, ignoring lines that didn't change much) ``` name old time/op new time/op delta Write/ordered-flate-4 81.5ms ± 5% 78.7ms ± 2% -3.39% (p=0.016 n=5+5) Read/none_66_kB-4 4.16ms ± 6% 3.93ms ± 4% -5.51% (p=0.032 n=5+5) Read/flate_66_kB-4 168ms ± 4% 179ms ±11% +6.50% (p=0.032 n=5+5) Read/zstd_66_kB-4 334ms ±16% 152ms ± 3% -54.57% (p=0.008 n=5+5) Read/none_262_kB-4 3.93ms ± 1% 3.81ms ± 2% -2.91% (p=0.008 n=5+5) Read/zstd_262_kB-4 369ms ± 8% 131ms ± 1% -64.62% (p=0.008 n=5+5) Read/zstd_524_kB-4 466ms ±17% 146ms ± 2% -68.68% (p=0.008 n=5+5) Read/sample_zstd_66_kB-4 420ms ±18% 224ms ± 1% -46.69% (p=0.016 n=5+4) Read/sample_gzip_262_kB-4 214ms ± 1% 218ms ± 1% +1.90% (p=0.016 n=5+5) Read/sample_zstd_262_kB-4 418ms ±21% 200ms ± 2% -52.15% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 576ms ±35% 234ms ± 1% -59.42% (p=0.008 n=5+5) name old speed new speed delta Write/ordered-gzip-4 267MB/s ±10% 284MB/s ± 2% +6.51% (p=0.008 n=5+5) Write/ordered-flate-4 274MB/s ± 4% 291MB/s ± 2% +6.49% (p=0.008 n=5+5) Read/none_66_kB-4 1.82GB/s ± 6% 1.92GB/s ± 4% +5.78% (p=0.032 n=5+5) Read/gzip_66_kB-4 669MB/s ± 4% 698MB/s ± 1% +4.30% (p=0.008 n=5+5) Read/zstd_66_kB-4 425MB/s ±14% 930MB/s ± 3% +119.12% (p=0.008 n=5+5) Read/none_262_kB-4 1.93GB/s ± 1% 1.99GB/s ± 2% +3.00% (p=0.008 n=5+5) Read/gzip_262_kB-4 701MB/s ± 5% 721MB/s ± 2% +2.96% (p=0.032 n=5+5) Read/zstd_262_kB-4 357MB/s ± 8% 1009MB/s ± 1% +182.89% (p=0.008 n=5+5) Read/flate_524_kB-4 750MB/s ± 1% 763MB/s ± 1% +1.74% (p=0.008 n=5+5) Read/zstd_524_kB-4 365MB/s ±18% 1149MB/s ± 2% +215.34% (p=0.008 n=5+5) Read/sample_zstd_66_kB-4 341MB/s ±17% 616MB/s ± 9% +80.67% (p=0.008 n=5+5) Read/sample_zstd_262_kB-4 318MB/s ±18% 658MB/s ± 2% +107.08% (p=0.016 n=5+4) Read/sample_gzip_524_kB-4 521MB/s ± 1% 530MB/s ± 1% +1.72% (p=0.032 n=5+5) Read/sample_zstd_524_kB-4 299MB/s ±28% 718MB/s ± 1% +140.23% (p=0.008 n=5+5) name old %compressed new %compressed delta Write/ordered-gzip-4 6.89 ± 0% 6.73 ± 0% -2.32% (p=0.000 n=5+4) Write/ordered-flate-4 6.89 ± 0% 6.69 ± 0% -2.84% (p=0.008 n=5+5) Write/ordered-zstd-4 6.17 ± 0% 6.16 ± 0% -0.02% (p=0.008 n=5+5) Write/unordered-gzip-4 6.89 ± 0% 6.73 ± 0% -2.32% (p=0.008 n=5+5) Write/unordered-flate-4 6.89 ± 0% 6.70 ± 0% -2.81% (p=0.000 n=4+5) Write/unordered-zstd-4 6.17 ± 0% 6.16 ± 0% -0.02% (p=0.008 n=5+5) name old alloc/op new alloc/op delta Write/unordered-lz4-4 18.8MB ± 4% 17.8MB ± 1% -5.28% (p=0.008 n=5+5) Read/gzip_66_kB-4 713kB ± 0% 735kB ± 1% +2.99% (p=0.008 n=5+5) Read/flate_66_kB-4 715kB ± 0% 733kB ± 0% +2.57% (p=0.008 n=5+5) Read/zstd_66_kB-4 423MB ± 0% 1MB ± 0% -99.65% (p=0.016 n=5+4) Read/gzip_262_kB-4 198kB ± 0% 204kB ± 0% +3.07% (p=0.016 n=4+5) Read/lz4-64k_262_kB-4 169kB ± 0% 169kB ± 0% -0.07% (p=0.000 n=5+4) Read/flate_262_kB-4 197kB ± 0% 205kB ± 0% +3.77% (p=0.008 n=5+5) Read/zstd_262_kB-4 553MB ± 0% 0MB ± 0% -99.92% (p=0.016 n=5+4) Read/gzip_524_kB-4 96.2kB ± 0% 98.8kB ± 0% +2.71% (p=0.016 n=4+5) Read/flate_524_kB-4 95.4kB ± 0% 98.7kB ± 0% +3.46% (p=0.008 n=5+5) Read/zstd_524_kB-4 786MB ± 0% 1MB ± 6% -99.93% (p=0.008 n=5+5) Read/sample_gzip_66_kB-4 686kB ± 0% 703kB ± 0% +2.48% (p=0.029 n=4+4) Read/sample_flate_66_kB-4 688kB ± 0% 710kB ± 1% +3.08% (p=0.016 n=4+5) Read/sample_zstd_66_kB-4 423MB ± 0% 2MB ± 0% -99.59% (p=0.016 n=5+4) Read/sample_gzip_262_kB-4 194kB ± 0% 200kB ± 0% +3.10% (p=0.016 n=4+5) Read/sample_flate_262_kB-4 194kB ± 0% 201kB ± 0% +3.77% (p=0.016 n=4+5) Read/sample_zstd_262_kB-4 553MB ± 0% 0MB ± 0% -99.91% (p=0.016 n=5+4) Read/sample_gzip_524_kB-4 95.4kB ± 0% 97.9kB ± 0% +2.65% (p=0.008 n=5+5) Read/sample_flate_524_kB-4 95.2kB ± 0% 98.8kB ± 0% +3.71% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 786MB ± 0% 1MB ± 0% -99.90% (p=0.008 n=5+5) name old allocs/op new allocs/op delta Write/ordered-gzip-4 701 ± 0% 718 ± 1% +2.40% (p=0.008 n=5+5) Write/ordered-lz4-256k-4 656 ± 0% 657 ± 0% +0.21% (p=0.048 n=5+5) Write/ordered-flate-4 626 ± 0% 634 ± 1% +1.37% (p=0.008 n=5+5) Write/ordered-zstd-4 2.07k ± 0% 1.44k ± 0% -30.49% (p=0.008 n=5+5) Write/unordered-gzip-4 418k ± 0% 428k ± 0% +2.39% (p=0.008 n=5+5) Write/unordered-flate-4 418k ± 0% 430k ± 0% +2.89% (p=0.008 n=5+5) Write/unordered-zstd-4 469k ± 0% 468k ± 0% -0.12% (p=0.008 n=5+5) Read/gzip_66_kB-4 13.2k ± 0% 13.5k ± 0% +2.54% (p=0.016 n=5+4) Read/lz4-256k_66_kB-4 13.7k ± 0% 13.7k ± 0% -0.01% (p=0.029 n=4+4) Read/flate_66_kB-4 13.2k ± 0% 13.6k ± 0% +2.72% (p=0.008 n=5+5) Read/zstd_66_kB-4 18.0k ± 1% 10.8k ± 0% -40.19% (p=0.008 n=5+5) Read/gzip_262_kB-4 4.61k ± 0% 4.76k ± 0% +3.17% (p=0.016 n=4+5) Read/flate_262_kB-4 4.61k ± 0% 4.78k ± 0% +3.62% (p=0.008 n=5+5) Read/zstd_262_kB-4 7.10k ± 2% 2.54k ± 0% -64.22% (p=0.016 n=5+4) Read/gzip_524_kB-4 2.62k ± 0% 2.69k ± 0% +2.36% (p=0.016 n=4+5) Read/flate_524_kB-4 2.62k ± 0% 2.70k ± 0% +3.09% (p=0.008 n=5+5) Read/zstd_524_kB-4 6.13k ± 2% 1.63k ± 0% -73.40% (p=0.008 n=5+5) Read/sample_gzip_66_kB-4 13.2k ± 0% 13.5k ± 0% +2.54% (p=0.029 n=4+4) Read/sample_flate_66_kB-4 13.2k ± 0% 13.6k ± 0% +2.88% (p=0.016 n=4+5) Read/sample_zstd_66_kB-4 18.0k ± 1% 10.8k ± 0% -40.00% (p=0.008 n=5+5) Read/sample_gzip_262_kB-4 4.63k ± 0% 4.77k ± 0% +3.16% (p=0.016 n=4+5) Read/sample_flate_262_kB-4 4.62k ± 0% 4.79k ± 0% +3.61% (p=0.016 n=4+5) Read/sample_zstd_262_kB-4 7.12k ± 1% 2.54k ± 0% -64.28% (p=0.008 n=5+5) Read/sample_gzip_524_kB-4 2.63k ± 0% 2.69k ± 0% +2.36% (p=0.008 n=5+5) Read/sample_flate_524_kB-4 2.63k ± 0% 2.72k ± 0% +3.31% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 6.11k ± 2% 1.64k ± 0% -73.23% (p=0.008 n=5+5) ```
changhyuni
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Nov 8, 2022
**What this PR does / why we need it**: Bring in various improvements from upstream, particularly klauspost/compress#668 **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - NA Documentation added - NA Tests updated - [x] `CHANGELOG.md` updated - NA Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` **Benchmarks** (using changes from grafana#7246, ignoring lines that didn't change much) ``` name old time/op new time/op delta Write/ordered-flate-4 81.5ms ± 5% 78.7ms ± 2% -3.39% (p=0.016 n=5+5) Read/none_66_kB-4 4.16ms ± 6% 3.93ms ± 4% -5.51% (p=0.032 n=5+5) Read/flate_66_kB-4 168ms ± 4% 179ms ±11% +6.50% (p=0.032 n=5+5) Read/zstd_66_kB-4 334ms ±16% 152ms ± 3% -54.57% (p=0.008 n=5+5) Read/none_262_kB-4 3.93ms ± 1% 3.81ms ± 2% -2.91% (p=0.008 n=5+5) Read/zstd_262_kB-4 369ms ± 8% 131ms ± 1% -64.62% (p=0.008 n=5+5) Read/zstd_524_kB-4 466ms ±17% 146ms ± 2% -68.68% (p=0.008 n=5+5) Read/sample_zstd_66_kB-4 420ms ±18% 224ms ± 1% -46.69% (p=0.016 n=5+4) Read/sample_gzip_262_kB-4 214ms ± 1% 218ms ± 1% +1.90% (p=0.016 n=5+5) Read/sample_zstd_262_kB-4 418ms ±21% 200ms ± 2% -52.15% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 576ms ±35% 234ms ± 1% -59.42% (p=0.008 n=5+5) name old speed new speed delta Write/ordered-gzip-4 267MB/s ±10% 284MB/s ± 2% +6.51% (p=0.008 n=5+5) Write/ordered-flate-4 274MB/s ± 4% 291MB/s ± 2% +6.49% (p=0.008 n=5+5) Read/none_66_kB-4 1.82GB/s ± 6% 1.92GB/s ± 4% +5.78% (p=0.032 n=5+5) Read/gzip_66_kB-4 669MB/s ± 4% 698MB/s ± 1% +4.30% (p=0.008 n=5+5) Read/zstd_66_kB-4 425MB/s ±14% 930MB/s ± 3% +119.12% (p=0.008 n=5+5) Read/none_262_kB-4 1.93GB/s ± 1% 1.99GB/s ± 2% +3.00% (p=0.008 n=5+5) Read/gzip_262_kB-4 701MB/s ± 5% 721MB/s ± 2% +2.96% (p=0.032 n=5+5) Read/zstd_262_kB-4 357MB/s ± 8% 1009MB/s ± 1% +182.89% (p=0.008 n=5+5) Read/flate_524_kB-4 750MB/s ± 1% 763MB/s ± 1% +1.74% (p=0.008 n=5+5) Read/zstd_524_kB-4 365MB/s ±18% 1149MB/s ± 2% +215.34% (p=0.008 n=5+5) Read/sample_zstd_66_kB-4 341MB/s ±17% 616MB/s ± 9% +80.67% (p=0.008 n=5+5) Read/sample_zstd_262_kB-4 318MB/s ±18% 658MB/s ± 2% +107.08% (p=0.016 n=5+4) Read/sample_gzip_524_kB-4 521MB/s ± 1% 530MB/s ± 1% +1.72% (p=0.032 n=5+5) Read/sample_zstd_524_kB-4 299MB/s ±28% 718MB/s ± 1% +140.23% (p=0.008 n=5+5) name old %compressed new %compressed delta Write/ordered-gzip-4 6.89 ± 0% 6.73 ± 0% -2.32% (p=0.000 n=5+4) Write/ordered-flate-4 6.89 ± 0% 6.69 ± 0% -2.84% (p=0.008 n=5+5) Write/ordered-zstd-4 6.17 ± 0% 6.16 ± 0% -0.02% (p=0.008 n=5+5) Write/unordered-gzip-4 6.89 ± 0% 6.73 ± 0% -2.32% (p=0.008 n=5+5) Write/unordered-flate-4 6.89 ± 0% 6.70 ± 0% -2.81% (p=0.000 n=4+5) Write/unordered-zstd-4 6.17 ± 0% 6.16 ± 0% -0.02% (p=0.008 n=5+5) name old alloc/op new alloc/op delta Write/unordered-lz4-4 18.8MB ± 4% 17.8MB ± 1% -5.28% (p=0.008 n=5+5) Read/gzip_66_kB-4 713kB ± 0% 735kB ± 1% +2.99% (p=0.008 n=5+5) Read/flate_66_kB-4 715kB ± 0% 733kB ± 0% +2.57% (p=0.008 n=5+5) Read/zstd_66_kB-4 423MB ± 0% 1MB ± 0% -99.65% (p=0.016 n=5+4) Read/gzip_262_kB-4 198kB ± 0% 204kB ± 0% +3.07% (p=0.016 n=4+5) Read/lz4-64k_262_kB-4 169kB ± 0% 169kB ± 0% -0.07% (p=0.000 n=5+4) Read/flate_262_kB-4 197kB ± 0% 205kB ± 0% +3.77% (p=0.008 n=5+5) Read/zstd_262_kB-4 553MB ± 0% 0MB ± 0% -99.92% (p=0.016 n=5+4) Read/gzip_524_kB-4 96.2kB ± 0% 98.8kB ± 0% +2.71% (p=0.016 n=4+5) Read/flate_524_kB-4 95.4kB ± 0% 98.7kB ± 0% +3.46% (p=0.008 n=5+5) Read/zstd_524_kB-4 786MB ± 0% 1MB ± 6% -99.93% (p=0.008 n=5+5) Read/sample_gzip_66_kB-4 686kB ± 0% 703kB ± 0% +2.48% (p=0.029 n=4+4) Read/sample_flate_66_kB-4 688kB ± 0% 710kB ± 1% +3.08% (p=0.016 n=4+5) Read/sample_zstd_66_kB-4 423MB ± 0% 2MB ± 0% -99.59% (p=0.016 n=5+4) Read/sample_gzip_262_kB-4 194kB ± 0% 200kB ± 0% +3.10% (p=0.016 n=4+5) Read/sample_flate_262_kB-4 194kB ± 0% 201kB ± 0% +3.77% (p=0.016 n=4+5) Read/sample_zstd_262_kB-4 553MB ± 0% 0MB ± 0% -99.91% (p=0.016 n=5+4) Read/sample_gzip_524_kB-4 95.4kB ± 0% 97.9kB ± 0% +2.65% (p=0.008 n=5+5) Read/sample_flate_524_kB-4 95.2kB ± 0% 98.8kB ± 0% +3.71% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 786MB ± 0% 1MB ± 0% -99.90% (p=0.008 n=5+5) name old allocs/op new allocs/op delta Write/ordered-gzip-4 701 ± 0% 718 ± 1% +2.40% (p=0.008 n=5+5) Write/ordered-lz4-256k-4 656 ± 0% 657 ± 0% +0.21% (p=0.048 n=5+5) Write/ordered-flate-4 626 ± 0% 634 ± 1% +1.37% (p=0.008 n=5+5) Write/ordered-zstd-4 2.07k ± 0% 1.44k ± 0% -30.49% (p=0.008 n=5+5) Write/unordered-gzip-4 418k ± 0% 428k ± 0% +2.39% (p=0.008 n=5+5) Write/unordered-flate-4 418k ± 0% 430k ± 0% +2.89% (p=0.008 n=5+5) Write/unordered-zstd-4 469k ± 0% 468k ± 0% -0.12% (p=0.008 n=5+5) Read/gzip_66_kB-4 13.2k ± 0% 13.5k ± 0% +2.54% (p=0.016 n=5+4) Read/lz4-256k_66_kB-4 13.7k ± 0% 13.7k ± 0% -0.01% (p=0.029 n=4+4) Read/flate_66_kB-4 13.2k ± 0% 13.6k ± 0% +2.72% (p=0.008 n=5+5) Read/zstd_66_kB-4 18.0k ± 1% 10.8k ± 0% -40.19% (p=0.008 n=5+5) Read/gzip_262_kB-4 4.61k ± 0% 4.76k ± 0% +3.17% (p=0.016 n=4+5) Read/flate_262_kB-4 4.61k ± 0% 4.78k ± 0% +3.62% (p=0.008 n=5+5) Read/zstd_262_kB-4 7.10k ± 2% 2.54k ± 0% -64.22% (p=0.016 n=5+4) Read/gzip_524_kB-4 2.62k ± 0% 2.69k ± 0% +2.36% (p=0.016 n=4+5) Read/flate_524_kB-4 2.62k ± 0% 2.70k ± 0% +3.09% (p=0.008 n=5+5) Read/zstd_524_kB-4 6.13k ± 2% 1.63k ± 0% -73.40% (p=0.008 n=5+5) Read/sample_gzip_66_kB-4 13.2k ± 0% 13.5k ± 0% +2.54% (p=0.029 n=4+4) Read/sample_flate_66_kB-4 13.2k ± 0% 13.6k ± 0% +2.88% (p=0.016 n=4+5) Read/sample_zstd_66_kB-4 18.0k ± 1% 10.8k ± 0% -40.00% (p=0.008 n=5+5) Read/sample_gzip_262_kB-4 4.63k ± 0% 4.77k ± 0% +3.16% (p=0.016 n=4+5) Read/sample_flate_262_kB-4 4.62k ± 0% 4.79k ± 0% +3.61% (p=0.016 n=4+5) Read/sample_zstd_262_kB-4 7.12k ± 1% 2.54k ± 0% -64.28% (p=0.008 n=5+5) Read/sample_gzip_524_kB-4 2.63k ± 0% 2.69k ± 0% +2.36% (p=0.008 n=5+5) Read/sample_flate_524_kB-4 2.63k ± 0% 2.72k ± 0% +3.31% (p=0.016 n=5+4) Read/sample_zstd_524_kB-4 6.11k ± 2% 1.64k ± 0% -73.23% (p=0.008 n=5+5) ```
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Adds
WithDecodeBuffersBelowto tweak buffer switch-over.Fixes #666 and generally reduces Reader allocations.