Messages in this thread | | | Date | Mon, 26 Oct 2009 12:35:55 +0100 | From | Jens Axboe <> | Subject | Re: [RFC]cfq-iosched: improve hw_tag detection |
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On Mon, Oct 26 2009, Shaohua Li wrote: > If active queue hasn't enough requests and idle window opens, cfq will not > dispatch sufficient requests to hardware. In such situation, current code > will zero hw_tag. But this is because cfq doesn't dispatch enough requests > instead of hardware queue doesn't work. Don't zero hw_tag in such case.
Thanks, that looks like a good fix. Curious, is this fixing some regression at your end?
-- Jens Axboe
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