Re: Time sliced CFQ io scheduler

["Prakash K. Cheemplavam" <prakashkc@gmx.de>]

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Andrew Morton schrieb:
> "Prakash K. Cheemplavam" <prakashkc@gmx.de> wrote:
> 
>>>Can you try with the patch that is in the parent of this thread? The
>>
>> > above doesn't look that bad, although read performance could be better
>> > of course. But try with the patch please, I'm sure it should help you
>> > quite a lot.
>> > 
>>
>> It actually got worse: Though the read rate seems accepteble, it is not, as 
>> interactivity is dead while writing.
> 
> 
> Is this a parallel IDE system?  SATA?  SCSI?  If the latter, what driver
> and what is the TCQ depth?

Hmm yes, this is a RAID0 configuration, so the regression of time 
slieced CFQ might me related to it, but the problem of unresponsiveness 
while writing as such was on my single disk, as well. Here one HD is 
SATA (libata silicon image) and one on IDE controller (nforce2). No TCQ. 
BTW, I haven't checked the problem on my ide disk only on SATA. Wil try 
to free some space and do so...

Prakash

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