* [LSF/MM ATTEND] Filesystems - VFS, ext4, xfs, btrfs, etc
@ 2014-12-01 4:32 Zhi Yong Wu
2014-12-01 8:54 ` [Lsf-pc] " Jan Kara
0 siblings, 1 reply; 3+ messages in thread
From: Zhi Yong Wu @ 2014-12-01 4:32 UTC (permalink / raw)
To: lsf-pc
Cc: linux-fsdevel@vger.kernel.org, mgorman, Christoph Hellwig,
Theodore Ts'o
HI,
HI, folks
I'd like to attend LSF/MM summit, been very interested in the
discussion related to VFS, ext4, xfs, btrfs, and memory management;
and would like to discuss some FS perf stuff with others.
--
Regards,
Zhi Yong Wu
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Lsf-pc] [LSF/MM ATTEND] Filesystems - VFS, ext4, xfs, btrfs, etc
2014-12-01 4:32 [LSF/MM ATTEND] Filesystems - VFS, ext4, xfs, btrfs, etc Zhi Yong Wu
@ 2014-12-01 8:54 ` Jan Kara
2014-12-01 9:35 ` Zhi Yong Wu
0 siblings, 1 reply; 3+ messages in thread
From: Jan Kara @ 2014-12-01 8:54 UTC (permalink / raw)
To: Zhi Yong Wu
Cc: lsf-pc, linux-fsdevel@vger.kernel.org, Christoph Hellwig,
Theodore Ts'o, mgorman
Hello,
On Mon 01-12-14 12:32:05, Zhi Yong Wu wrote:
> I'd like to attend LSF/MM summit, been very interested in the
> discussion related to VFS, ext4, xfs, btrfs, and memory management;
> and would like to discuss some FS perf stuff with others.
Can you be more specific what performance discussions are you interested
in? Thanks.
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Lsf-pc] [LSF/MM ATTEND] Filesystems - VFS, ext4, xfs, btrfs, etc
2014-12-01 8:54 ` [Lsf-pc] " Jan Kara
@ 2014-12-01 9:35 ` Zhi Yong Wu
0 siblings, 0 replies; 3+ messages in thread
From: Zhi Yong Wu @ 2014-12-01 9:35 UTC (permalink / raw)
To: Jan Kara
Cc: lsf-pc, linux-fsdevel@vger.kernel.org, Christoph Hellwig,
Theodore Ts'o, mgorman
On Mon, Dec 1, 2014 at 4:54 PM, Jan Kara <jack@suse.cz> wrote:
> Hello,
>
> On Mon 01-12-14 12:32:05, Zhi Yong Wu wrote:
>> I'd like to attend LSF/MM summit, been very interested in the
>> discussion related to VFS, ext4, xfs, btrfs, and memory management;
>> and would like to discuss some FS perf stuff with others.
> Can you be more specific what performance discussions are you interested
> in? Thanks.
e.g.
1. resize2fs/resize4fs is one of them.
When ext4 fs is resized by a big size, you can see that its performance
is much worse than windows ntfsresize.
Below is some perf data:
1.) single fsresize operation
orig_fssize -> new_fsresize ext4 ntfs
(mm:ss)
71680M -> 174080M 0:43.96 0:14.43
174080M -> 276480M 0:47.52 0:13.66
276480M -> 378880M 0:51.13 0:13.93
378880M -> 481280M 0:56.96 0:13.40
481280M -> 1505280M 5:57.19 0:32.29
2.) 4 fsresize operation in parallel
orig_fssize -> new_fsresize ext4 ntfs
(mm:ss)
174080M -> 276480M 1:05.83 0:38.87
276480M -> 378880M 1:08.39 0:34.69
378880M -> 481280M 1:12.55 0:35.26
481280M -> 1505280M 7:35.15 0:40.12
2. another perf issue is being resolved by Ted's lazytime patchset. :)
>
> Honza
> --
> Jan Kara <jack@suse.cz>
> SUSE Labs, CR
--
Regards,
Zhi Yong Wu
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-12-01 4:32 [LSF/MM ATTEND] Filesystems - VFS, ext4, xfs, btrfs, etc Zhi Yong Wu
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2014-12-01 9:35 ` Zhi Yong Wu
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