Re: [PATCH 2/2] zram: remove zlib from the list of recommended algorithms

From	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 2/2] zram: remove zlib from the list of recommended algorithms
Date	2017-09-13 09:20 +0200
Message-ID	<upa7M-4ev-15@gated-at.bofh.it> (permalink)
References	<uoLCp-5lx-7@gated-at.bofh.it> <uoLCp-5lx-5@gated-at.bofh.it> <upa7L-4ev-11@gated-at.bofh.it>
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On (09/13/17 16:12), Minchan Kim wrote:
> 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 <sergey.senozhatsky@gmail.com>
> > Suggested-by: Minchan Kim <minchan@kernel.org>
>  
> 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.

hm, interesting. on my "real world" use-cases zstd has better
compression ratio.

> Thanks for the patch, Sergey.
> 
> Acked-by: Minchan Kim <minchan@kernel.org>

thanks.

	-ss

Thread

[PATCH 2/2] zram: remove zlib from the list of recommended algorithms Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2017-09-12 07:10 +0200
  Re: [PATCH 2/2] zram: remove zlib from the list of recommended  algorithms Minchan Kim <minchan@kernel.org> - 2017-09-12 08:50 +0200
    Re: [PATCH 2/2] zram: remove zlib from the list of recommended  algorithms Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2017-09-12 09:10 +0200
  Re: [PATCH 2/2] zram: remove zlib from the list of recommended  algorithms Minchan Kim <minchan@kernel.org> - 2017-09-13 09:20 +0200
    Re: [PATCH 2/2] zram: remove zlib from the list of recommended  algorithms Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2017-09-13 09:20 +0200
    Re: [PATCH 2/2] zram: remove zlib from the list of recommended  algorithms Adam Borowski <kilobyte@angband.pl> - 2017-09-13 12:40 +0200
      Re: [PATCH 2/2] zram: remove zlib from the list of recommended  algorithms Minchan Kim <minchan@kernel.org> - 2017-09-14 10:10 +0200

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