lkml.org 
[lkml]   [2009]   [Sep]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Poor desktop responsiveness with background I/O-operations
On Sun, 20 Sep 2009 05:08:43 +0200
Ulrich Lukas <stellplatz-nr.13a@datenparkplatz.de> wrote:
>
> Observation:
> - The system becomes _really_ slow as described above; unusable for
> any multimedia tasks.
>
> - Using an encrypted (dm-crypt/LUKS) /home (e.g. on mobile computers)
> compounds the issue to a painful extent.
>
>
>
> Possible culprits (I'm guessing) are the Linux I/O- or CPU scheduler.

this has nothing to do with the cpu scheduler....
can you try the following two things?
echo 4096 > /sys/block/sda/queue/nr_requests
for i in `pidof kjournald` ; do ionice -c1 -p $i ; done
to see if they help?

they tweak the IO scheduler... I assume you're using CFQ.


\
 
 \ /
  Last update: 2009-09-20 08:09    [W:0.411 / U:0.720 seconds]
©2003-2014 Jasper Spaans. Advertise on this site