perf[runend]: run_end_bool decompress#6229
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Signed-off-by: Joe Isaacs <joe.isaacs@live.co.uk>
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Merging this PR will improve performance by ×2.8
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Benchmarks: TPC-H SF=1 on NVMESummary
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Benchmarks: FineWeb NVMeSummary
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Benchmarks: Random AccessSummary
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Benchmarks: TPC-H SF=1 on S3Summary
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Benchmarks: TPC-DS SF=1 on NVMESummary
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Benchmarks: TPC-H SF=10 on NVMESummary
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Benchmarks: FineWeb S3Summary
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Benchmarks: Statistical and Population GeneticsSummary
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Benchmarks: TPC-H SF=10 on S3Summary
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Benchmarks: Clickbench on NVMESummary
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Benchmarks: CompressionSummary
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Love me some prefilling
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| /// Fills bits in range [start, end) to true using byte-level operations. | ||
| /// Assumes the buffer is pre-initialized to all zeros. | ||
| #[inline(always)] | ||
| fn fill_bits_true(slice: &mut [u8], start: usize, end: usize) { |
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we already have append_n logic in BitBufferMut which is very similar to this logic. This logic is even the same between this function and the other logic. Maybe we have BitBuffer expose some set_range, unset_range
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speed up runend bool decompress