ndreas Dilger ;
> > linux-e...@vger.kernel.org; linux-fsde...@vger.kernel.org; linux-
> > ker...@vger.kernel.org
> > Subject: Re: ext4: performance regression introduced by the cgroup writeback
> > support
> >
> > On Wed, Sep 23, 2015 at 12:13:59PM -0400, Chris Mas
gt; ker...@vger.kernel.org
> Subject: Re: ext4: performance regression introduced by the cgroup writeback
> support
>
> On Wed, Sep 23, 2015 at 12:13:59PM -0400, Chris Mason wrote:
> > > The issue is: under high CPU and disk I/O pressure, *some* processes can
> suffer from
el.org
> Subject: Re: ext4: performance regression introduced by the cgroup writeback
> support
>
> On Wed, Sep 23, 2015 at 01:49:31PM +, Dexuan Cui wrote:
> > Hi all,
> > Since some point between July and Sep, I have been suffered from a strange
> "very slow write&q
On Wed, Sep 23, 2015 at 12:13:59PM -0400, Chris Mason wrote:
> > The issue is: under high CPU and disk I/O pressure, *some* processes can
> > suffer from a very slow write speed (e.g., <1MB/s or even only 20KB/s),
> > while the normal write speed should be at least dozens of MB/s.
So, I think I
On Wed, Sep 23, 2015 at 01:49:31PM +, Dexuan Cui wrote:
> Hi all,
> Since some point between July and Sep, I have been suffered from a strange
> "very slow write" issue and on Sep 9 I reported it to LKML (but got no
> reply): https://lkml.org/lkml/2015/9/9/290
>
> The issue is: under high CP
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