Messages in this thread | | | Date | Wed, 22 Apr 2009 11:04:58 +0800 | From | Gui Jianfeng <> | Subject | Re: [RFC] IO Controller |
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Vivek Goyal wrote: > On Fri, Apr 10, 2009 at 05:33:10PM +0800, Gui Jianfeng wrote: >> Vivek Goyal wrote: >>> Hi All, >>> >>> Here is another posting for IO controller patches. Last time I had posted >>> RFC patches for an IO controller which did bio control per cgroup. >> Hi Vivek, >> >> I got the following OOPS when testing, can't reproduce again :( >> > > Hi Gui, > > Thanks for the report. Will look into it and see if I can reproduce it.
Hi Vivek,
The following script can reproduce the bug in my box.
#!/bin/sh
mkdir /cgroup mount -t cgroup -o io io /cgroup mkdir /cgroup/test1 mkdir /cgroup/test2
echo cfq > /sys/block/sda/queue/scheduler echo 7 > /cgroup/test1/io.ioprio echo 1 > /cgroup/test2/io.ioprio echo 1 > /proc/sys/vm/drop_caches dd if=1000M.1 of=/dev/null & pid1=$! echo $pid1 echo $pid1 > /cgroup/test1/tasks dd if=1000M.2 of=/dev/null pid2=$! echo $pid2 echo $pid2 > /cgroup/test2/tasks
rmdir /cgroup/test1 rmdir /cgroup/test2 umount /cgroup rmdir /cgroup
-- Regards Gui Jianfeng
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