Performance optimizations for large databases#1
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ak4code
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Jan 28, 2026
ak4code
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- Add streaming decompression via ChunkReader to avoid loading entire compressed blocks into memory (critical for tables with 100M+ rows)
- Change MutationContext.current_value from String to &str to avoid allocations per column per row
- Enable multithreaded zstd compression (zstdmt feature)
- Use SIMD-optimized memchr for newline searching
- Increase I/O buffer sizes from 64KB to 2MB
- Reduce zstd compression level from 3 to 1 for speed
- Batch write integers in io.rs (1 syscall instead of 5-9)
- Add streaming decompression via ChunkReader to avoid loading entire compressed blocks into memory (critical for tables with 100M+ rows) - Change MutationContext.current_value from String to &str to avoid allocations per column per row - Enable multithreaded zstd compression (zstdmt feature) - Use SIMD-optimized memchr for newline searching - Increase I/O buffer sizes from 64KB to 2MB - Reduce zstd compression level from 3 to 1 for speed - Batch write integers in io.rs (1 syscall instead of 5-9)
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