From: Tejun Heo <tj@kernel.org>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Mike Galbraith <efault@gmx.de>, Paul Turner <pjt@google.com>,
Chris Mason <clm@fb.com>,
kernel-team@fb.com
Subject: Re: [RFC PATCHSET v2] sched/fair: fix load balancer behavior when cgroup is in use
Date: Fri, 5 May 2017 09:28:45 -0400 [thread overview]
Message-ID: <20170505132845.GC8936@wtj.duckdns.org> (raw)
In-Reply-To: <CAKfTPtC+5LDTSrdo5Ck5Mu6PFMSbVM=ZAGFASGtTODYL7VOqEQ@mail.gmail.com>
Hello, Vincent.
On Fri, May 05, 2017 at 10:46:53AM +0200, Vincent Guittot wrote:
> schbench results looks better with this version
> Latency percentiles (usec)
> 50.0000th: 212
> 75.0000th: 292
> 90.0000th: 385
> 95.0000th: 439
> *99.0000th: 671
> 99.5000th: 7992
> 99.9000th: 12176
> min=0, max=14855
>
> p99 is back to a normal value but p99.5 stays higher than mainline
By how much and is that with the weight adjustment on the cgroup? I
can't get reliable numbers on p99.5 and beyond on my test setup. I
ordered the hikey board and will try to replicate your setup once it
arrives.
> I have also checked load_avg and runnable_load_avg value and there is
> something incorrect. I will provide details on the related patch
Sure, will respond there.
Thanks.
--
tejun
next prev parent reply other threads:[~2017-05-05 13:28 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-04 20:28 [RFC PATCHSET v2] sched/fair: fix load balancer behavior when cgroup is in use Tejun Heo
2017-05-04 20:29 ` [PATCH 1/3] sched/fair: Peter's shares_type patch Tejun Heo
2017-05-05 10:40 ` Vincent Guittot
2017-05-05 15:30 ` Tejun Heo
2017-05-10 15:09 ` Tejun Heo
2017-05-10 16:07 ` Vincent Guittot
2017-05-11 6:59 ` Peter Zijlstra
2017-05-05 15:41 ` Peter Zijlstra
2017-05-04 20:29 ` [PATCH 2/3] sched/fair: Add load_weight->runnable_load_{sum|avg} Tejun Heo
2017-05-05 13:22 ` Dietmar Eggemann
2017-05-05 13:26 ` Tejun Heo
2017-05-05 13:37 ` Dietmar Eggemann
2017-05-04 20:30 ` [PATCH 3/3] sched/fair: Propagate runnable_load_avg independently from load_avg Tejun Heo
2017-05-05 10:42 ` Vincent Guittot
2017-05-05 12:18 ` Vincent Guittot
2017-05-05 13:26 ` Tejun Heo
2017-05-05 16:51 ` Vincent Guittot
2017-05-05 8:46 ` [RFC PATCHSET v2] sched/fair: fix load balancer behavior when cgroup is in use Vincent Guittot
2017-05-05 13:28 ` Tejun Heo [this message]
2017-05-05 13:32 ` Vincent Guittot
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