Re: Performance degradation with FFSB between 2.6.20 and 2.6.21-rc7

[Jens Axboe]

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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