From: Wang Yugui <wangyugui@e16-tech.com>
To: linux-btrfs@vger.kernel.org
Subject: btrfs write-bandwidth performance regression of 6.5-rc4/rc3
Date: Mon, 31 Jul 2023 15:22:28 +0800 [thread overview]
Message-ID: <20230731152223.4EFB.409509F4@e16-tech.com> (raw)
Hi,
I noticed a btrfs write-bandwidth performance regression of 6.5-rc4/rc3
with the compare to btrfs 6.4.0
test case:
disk: NVMe PCIe3 SSD *4
btrfs: -m raid -d raid0
fio -name write-bandwidth -rw=write -bs=1024Ki -size=32Gi -runtime=30
-iodepth 1 -ioengine sync -zero_buffers=1 -direct=0 -end_fsync=1 -numjobs=4
-directory=/mnt/test
6.5-rc4/rc3
fio(-numjobs=4) WRITE: bw=1512MiB/s (1586MB/s)
but ‘dd conv=fsync’ works well, 2.1 GiB/s.
6.4.0
fio(-numjobs=4) WRITE: bw=4147MiB/s (4349MB/s)
'git bisect' between 6.4 and 6.5 is yet not done.
Best Regards
Wang Yugui (wangyugui@e16-tech.com)
2023/07/31
next reply other threads:[~2023-07-31 7:29 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-31 7:22 Wang Yugui [this message]
2023-08-01 2:22 ` btrfs write-bandwidth performance regression of 6.5-rc4/rc3 Wang Yugui
2023-08-01 8:35 ` Christoph Hellwig
2023-08-01 8:56 ` Wang Yugui
2023-08-01 9:03 ` Christoph Hellwig
2023-08-01 9:32 ` Wang Yugui
2023-08-01 10:00 ` Christoph Hellwig
2023-08-01 13:04 ` Wang Yugui
2023-08-01 14:59 ` Christoph Hellwig
2023-08-01 15:51 ` Wang Yugui
2023-08-01 15:56 ` Christoph Hellwig
2023-08-01 15:57 ` Christoph Hellwig
2023-08-02 0:04 ` Wang Yugui
2023-08-02 9:26 ` Christoph Hellwig
2023-08-11 8:58 ` Linux regression tracking (Thorsten Leemhuis)
2023-08-11 10:31 ` Christoph Hellwig
2023-08-11 14:23 ` Wang Yugui
2023-08-11 14:52 ` Chris Mason
2023-08-13 9:50 ` Wang Yugui
2023-08-29 9:45 ` Linux regression tracking (Thorsten Leemhuis)
2023-09-11 7:02 ` Thorsten Leemhuis
2023-09-11 23:20 ` Wang Yugui
2023-09-12 7:58 ` Linux regression tracking (Thorsten Leemhuis)
2023-09-26 10:55 ` Thorsten Leemhuis
2023-09-26 17:18 ` Chris Mason
2023-09-27 11:30 ` Linux regression tracking (Thorsten Leemhuis)
2023-12-06 14:22 ` Linux regression tracking (Thorsten Leemhuis)
2023-12-13 15:57 ` Naohiro Aota
2023-08-02 8:45 ` Linux regression tracking #adding (Thorsten Leemhuis)
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