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SubjectRe: [PATCH 2/2] zram: remove zlib from the list of recommended algorithms
On Tue, Sep 12, 2017 at 02:00:05PM +0900, Sergey Senozhatsky wrote:
> ZSTD tends to outperform deflate/inflate, thus we remove
> zlib from the list of recommended algorithms and recommend
> zstd instead.
> Signed-off-by: Sergey Senozhatsky <>
> Suggested-by: Minchan Kim <>

I did test with my sample data and compared zstd with deflate.
zstd's compress ratio is lower a little bit but compression
speed is much faster 3 times more and decompress speed is too
2 times more. With different data, it is different but overall,
zstd would be better for speed at the cost of a little lower compress
ratio(about 5%) so I believe it's worth to replace deflate.

Thanks for the patch, Sergey.

Acked-by: Minchan Kim <>

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