2018-01-23 21:49 GMT+08:00 Mike Galbraith :
> On Tue, 2018-01-23 at 18:36 +0800, Wanpeng Li wrote:
>>
>> Thanks for having a try, Mike. :) Actually the two context1 tasks
>> don't stack up on one logical cpu at the most of time which is
>> observed by kernelshark. Do you have any idea why there is
On Tue, 2018-01-23 at 18:36 +0800, Wanpeng Li wrote:
>
> Thanks for having a try, Mike. :) Actually the two context1 tasks
> don't stack up on one logical cpu at the most of time which is
> observed by kernelshark. Do you have any idea why there is 4.5 times
> RESCHED IPIs which is mentioned in an
2018-01-22 21:37 GMT+08:00 Mike Galbraith :
> On Mon, 2018-01-22 at 20:27 +0800, Wanpeng Li wrote:
>> 2018-01-22 20:08 GMT+08:00 Mike Galbraith :
>> > On Mon, 2018-01-22 at 19:47 +0800, Wanpeng Li wrote:
>> >> Hi all,
>> >>
>> >> We can observe unixbench context switch performance is heavily
>> >>
2018-01-22 20:53 GMT+08:00 Peter Zijlstra :
> On Mon, Jan 22, 2018 at 07:47:45PM +0800, Wanpeng Li wrote:
>> Hi all,
>>
>> We can observe unixbench context switch performance is heavily
>> influenced by cpu topology which is exposed to the guest. the score is
>> posted below, bigger is better, both
On Mon, 2018-01-22 at 20:27 +0800, Wanpeng Li wrote:
> 2018-01-22 20:08 GMT+08:00 Mike Galbraith :
> > On Mon, 2018-01-22 at 19:47 +0800, Wanpeng Li wrote:
> >> Hi all,
> >>
> >> We can observe unixbench context switch performance is heavily
> >> influenced by cpu topology which is exposed to the g
On Mon, Jan 22, 2018 at 07:47:45PM +0800, Wanpeng Li wrote:
> Hi all,
>
> We can observe unixbench context switch performance is heavily
> influenced by cpu topology which is exposed to the guest. the score is
> posted below, bigger is better, both the guest and the host kernel are
> 3.15-rc3(we c
2018-01-22 20:08 GMT+08:00 Mike Galbraith :
> On Mon, 2018-01-22 at 19:47 +0800, Wanpeng Li wrote:
>> Hi all,
>>
>> We can observe unixbench context switch performance is heavily
>> influenced by cpu topology which is exposed to the guest. the score is
>> posted below, bigger is better, both the gu
On Mon, 2018-01-22 at 19:47 +0800, Wanpeng Li wrote:
> Hi all,
>
> We can observe unixbench context switch performance is heavily
> influenced by cpu topology which is exposed to the guest. the score is
> posted below, bigger is better, both the guest and the host kernel are
> 3.15-rc3(we can also
Hi all,
We can observe unixbench context switch performance is heavily
influenced by cpu topology which is exposed to the guest. the score is
posted below, bigger is better, both the guest and the host kernel are
3.15-rc3(we can also reproduce against centos 7.4 693 guest/host), LLC
is exposed to
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