Messages in this thread | | | Date | Sun, 20 Sep 2009 08:07:28 +0200 | From | Arjan van de Ven <> | Subject | Re: Poor desktop responsiveness with background I/O-operations |
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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.
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