Messages in this thread | | | Date | Mon, 23 Apr 2012 08:30:11 -0400 | From | Vivek Goyal <> | Subject | Re: [RFC] writeback and cgroup |
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On Fri, Apr 20, 2012 at 02:33:01PM -0700, Tejun Heo wrote: > On Fri, Apr 20, 2012 at 03:29:30PM -0400, Vivek Goyal wrote: > > I am personally is not too excited about the case of putting async IO > > in separate groups due to the reason that async IO of one group will > > start impacting latencies of sync IO of another group and in practice > > it might not be desirable. But there are others who have use cases for > > separate async IO queue. So as long as switch is there to change the > > behavior, I am not too worried. > > Why not just fix cfq so that it prefers groups w/ sync IOs?
Yes that could possibly be done but now that's change of requirements. Now we are saying that I want one buffered write to go faster than other buffered write only if there is no sync IO present in any of the groups.
Thanks Vivek
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