From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Qu Wenruo <wqu@suse.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
Minchan Kim <minchan@kernel.org>,
Brian Geffon <bgeffon@google.com>,
linux-block@vger.kernel.org, linux-mm@kvack.org,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH] zram: do not forget to endio for partial discard requests
Date: Tue, 31 Mar 2026 16:37:29 +0900 [thread overview]
Message-ID: <act5XhgtqrtN1zdY@google.com> (raw)
In-Reply-To: <a6b566e8-5808-4244-bcda-5612760bde3b@suse.com>
On (26/03/31 18:02), Qu Wenruo wrote:
[..]
> Which is 3 times slower than regular block devices.
>
> And after that short fsstress run:
>
> NAME ALGORITHM DISKSIZE DATA COMPR TOTAL STREAMS MOUNTPOINT
> /dev/zram0 zstd 1G 271.2M 10M 20.4M
>
> I guess this time the overhead is just in the compression so that's
> something expected?
Yes, pretty sure that is compression overhead, zstd is not the fastest
algorithm. If you need something just for testing then lzo or lz4
should be a better choice.
prev parent reply other threads:[~2026-03-31 7:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-31 7:15 [PATCH] zram: do not forget to endio for partial discard requests Sergey Senozhatsky
2026-03-31 7:26 ` Christoph Hellwig
2026-03-31 7:27 ` Sergey Senozhatsky
2026-03-31 7:32 ` Qu Wenruo
2026-03-31 7:37 ` Sergey Senozhatsky [this message]
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