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searcher: bump buffer size
This increases the initial buffer size from 8KB to 64KB. This actually leads to a reasonably noticeable improvement in at least one work-load, and is unlikely to regress in any other case. Also, since Rust programs (at least on Linux) seem to always use a minimum of 6-8MB of memory, adding an extra 56KB is negligible. Before: $ hyperfine -i "rg 'zqzqzqzq' OpenSubtitles2018.raw.en --no-mmap" Benchmark #1: rg 'zqzqzqzq' OpenSubtitles2018.raw.en --no-mmap Time (mean ± σ): 2.109 s ± 0.012 s [User: 565.5 ms, System: 1541.6 ms] Range (min … max): 2.094 s … 2.128 s 10 runs After: $ hyperfine -i "rg 'zqzqzqzq' OpenSubtitles2018.raw.en --no-mmap" Benchmark #1: rg 'zqzqzqzq' OpenSubtitles2018.raw.en --no-mmap Time (mean ± σ): 1.802 s ± 0.006 s [User: 462.3 ms, System: 1337.9 ms] Range (min … max): 1.795 s … 1.814 s 10 runs
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@ -4,7 +4,7 @@ use std::io;
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use bstr::ByteSlice;
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/// The default buffer capacity that we use for the line buffer.
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pub(crate) const DEFAULT_BUFFER_CAPACITY: usize = 8 * (1 << 10); // 8 KB
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pub(crate) const DEFAULT_BUFFER_CAPACITY: usize = 64 * (1 << 10); // 8 KB
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/// The behavior of a searcher in the face of long lines and big contexts.
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///
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