lkml.org 
[lkml]   [2007]   [Apr]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [ext3][kernels >= 2.6.20.7 at least] KDE going comatose when FS is under heavy write load (massive starvation)
From
Date
On Sat, 2007-04-28 at 00:01 -0700, Andrew Morton wrote:
> On Sat, 28 Apr 2007 08:32:32 +0200 Mike Galbraith <efault@gmx.de> wrote:
>
> > On Sat, 2007-04-28 at 06:25 +0200, Mike Galbraith wrote:

> > As promised, I tested with a kernel that I know for fact that I have
> > tested heavy IO on previously, and behavior was identically horrid, so
> > it's not something new that snuck in ~recently, my disk just got a _lot_
> > fuller in the meantime (12k mp3s munch a lot).
>
> Just to clarify here - you're saying that some older kernel is as sucky as
> 2.6.21, and that (presumably) dropping the dirty ratios makes things a bit
> better on the old kernel as well?

I didn't drop dirty ratios, only verified that behavior was just as
horrible as 2.6.21.

> Actually, I'm surprised that data=writeback didn't help much. If the
> present theories are correct it should have helped quite a lot, because in
> data=writeback mode fsync(small-file) will not cause
> fdatasync(everything-else).

data=writeback did help quite noticeably, just not enough.

-Mike

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-04-28 09:15    [W:0.127 / U:0.500 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site