Messages in this thread | | | Date | Thu, 19 Apr 2007 13:58:42 +0200 | From | Jens Axboe <> | Subject | Re: Performance degradation with FFSB between 2.6.20 and 2.6.21-rc7 |
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On Thu, Apr 19 2007, Valerie Clement wrote: > Jens Axboe wrote: > >Please tell me how you are running ffsb, and also please include a > >dmessg from a booted system. > > > Hi, > our mails crossed! please see my response to Andrew. > You could reproduce the problem with dd command as suggested, it's more > easy. > I'm sending you the dmesg info. For my tests I used the scsci sdc device.
Thanks, it does. Can you try one thing for me? If you run the test on sdc, try doing:
# echo 64 > /sys/block/sdc/queue/iosched/quantum
and repeat the test.
-- Jens Axboe
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