Messages in this thread | | | Date | Sun, 27 Feb 2011 18:16:18 -0500 | From | Vivek Goyal <> | Subject | Re: [PATCH 0/6 v5.1] cfq-iosched: Introduce CFQ group hierarchical scheduling and "use_hierarchy" interface |
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On Fri, Feb 25, 2011 at 09:55:32AM +0800, Gui Jianfeng wrote: > Vivek Goyal wrote: > > On Wed, Feb 23, 2011 at 11:01:35AM +0800, Gui Jianfeng wrote: > >> Hi > >> > >> I rebase this series on top of *for-next* branch, it will make merging life easier. > >> > >> Previously, I posted a patchset to add support of CFQ group hierarchical scheduling > >> in the way that it puts all CFQ queues in a hidden group and schedules with other > >> CFQ group under their parent. The patchset is available here, > >> http://lkml.org/lkml/2010/8/30/30 > > > > Gui, > > > > I was running some tests (iostest) with these patches and my system crashed > > after a while. > > > > To be precise I was running "brrmmap" test of iostest. > > Vivek, > > I simply run iostest with brrmmap mode, I can't reproduce this bug. > Would you give more details. > Can you tell me the iostest command line options?
iostest /dev/dm-1 -G --nrgrp 4 -m 8 --cgtime --io_serviced --dequeue --total
I was actually trying to run all the workloads defined but after running 2 workloads it crashed on 3rd workload.
Now I tried to re-run brrmmap and it did not crash. So I am trying to run all the inbuilt workloads again.
> Did you enable use_hierarchy in root group?
No I did not. Trying to test the flat setup first.
Thanks Vivek
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