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woobilicious | 3 years ago

I have this pathological example, I have a 30GB journal dump from bcachefs, and compressed it down with lz4 and zstd to a sata SSD, the compression ratios are 6.8% and 3% respectively (and this with default level 3!), it takes 14s to ripgrep through the lz4 version, and 11s with the zstd version. So even at 500MB/s zstd is faster for decompression.

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adgjlsfhk1|3 years ago

LZ4 requires about 2gb/s to be competitive on any relatively recent desktop/laptop cpu