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    SubjectRe: CFQ: async queue blocks the whole system
    On Fri, Jun 10, 2011 at 09:19:12AM +0800, Shaohua Li wrote:

    > > If there is no major advantage of draining sync requests before async
    > > is dispatched, I think this should be an easy fix.
    > I thought this is to avoid sync latency if we switch from an async
    > queue to sync queue later.

    Is it about the sync request latency which has already been dispatched? I
    really wish that driver and disk should do some prioritazation for reads
    here and CFQ does not have to jump through hoops like drain sync requests
    before async requests are dispatched.


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      Last update: 2011-06-10 11:21    [W:0.019 / U:8.388 seconds]
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