From: Jaegeuk Kim <jaegeuk.kim@samsung.com>
To: Alex <hbx7d@yandex.com>
Cc: linux-f2fs-devel@lists.sourceforge.net
Subject: Re: Regression in kernel 3.14.0-rc1
Date: Fri, 28 Feb 2014 10:42:14 +0900 [thread overview]
Message-ID: <1393551734.4705.92.camel@kjgkr> (raw)
In-Reply-To: <174911393513364@web17j.yandex.ru>
Hi,
Thank you for the report.
Unfortunately, when I measured dbench in my latest kernel, there was no
regression wrt the patch that you found.
Kernel: 3.14-rc3 with latest f2fs source codes
HW: Intel i5
OS: Ubuntu 12.10 x64
Test: dbench -D /mnt/test -t 6 6 -c ./client.txt
The results showed:
- ext4 : 203 MB/s
- f2fs : 318 MB/s
So, could you share the exact configuration of your dbench?
And, if possible, could you share the numbers of the following tests in
your environment?
1. ext4
2. the latest f2fs from dev branch
3. modified f2fs from the latest f2fs
: fs/f2fs/file.c
118 .sync_mode = WB_SYNC_ALL;
4. modified f2fs from the latest f2fs
: fs/f2fs/node.c
1221 wbc->sync_mode = WB_SYNC_ALL;
5. modified f2fs with #3 and #4 changes together
Thank you very much. :)
2014-02-27 (목), 19:02 +0400, Alex:
> Hello,
>
> After reading phoronix's f2fs benchmarks http://www.phoronix.com/scan.php?page=article&item=linux_314_ssdfs&num=2 (3rd picture) did kernel bisect and it resulted in this commit https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=fb5566da .
>
> PS Tried the latest tree from f2fs dev branch with the same results https://git.kernel.org/cgit/linux/kernel/git/jaegeuk/f2fs.git/commit/?h=dev&id=695fd1ed .
>
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next prev parent reply other threads:[~2014-02-28 1:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-27 15:02 Regression in kernel 3.14.0-rc1 Alex
2014-02-28 1:42 ` Jaegeuk Kim [this message]
2014-02-28 13:52 ` Alex
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