On Fri, Sep 09, 2011 at 06:00:28PM +0900, Takuya Yoshikawa wrote:
[..]
>
> >
> > - Even if there are close cooperators, these queues are merged and they
> > are treated as single queue from slice point of view. So cooperating
> > queues should be merged and get a single slice instead of star
On Fri, Sep 9, 2011 at 10:00 AM, Takuya Yoshikawa
wrote:
> Vivek Goyal wrote:
>
>> So you are using both RHEL 6.0 in both host and guest kernel? Can you
>> reproduce the same issue with upstream kernels? How easily/frequently
>> you can reproduce this with RHEL6.0 host.
>
> Guests were CentOS6.0.
Vivek Goyal wrote:
> So you are using both RHEL 6.0 in both host and guest kernel? Can you
> reproduce the same issue with upstream kernels? How easily/frequently
> you can reproduce this with RHEL6.0 host.
Guests were CentOS6.0.
I have only RHEL6.0 and RHEL6.1 test results now.
I want to try s
On Thu, Sep 08, 2011 at 06:13:53PM +0900, Takuya Yoshikawa wrote:
> This is a report of strange cfq behaviour which seems to be triggered by
> QEMU posix aio threads.
>
> Host environment:
> OS: RHEL6.0 KVM/qemu-kvm (with no patch applied)
> IO scheduler: cfq (with the default parameters)
So
