From: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>, Mike Galbraith <efault@gmx.de>,
Suresh Siddha <suresh.b.siddha@intel.com>,
Paul Turner <pjt@google.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1] sched: steer waking task to empty cfs_rq for better latencies
Date: Tue, 24 Apr 2012 22:37:43 +0530 [thread overview]
Message-ID: <20120424170743.GA18799@linux.vnet.ibm.com> (raw)
In-Reply-To: <1335286696.28150.206.camel@twins>
* Peter Zijlstra <peterz@infradead.org> [2012-04-24 18:58:16]:
> On Tue, 2012-04-24 at 22:26 +0530, Srivatsa Vaddagiri wrote:
> > Steer a waking task towards a cpu where its cgroup has zero tasks (in
> > order to provide it better sleeper credits and hence reduce its wakeup
> > latency).
>
> That's just vile.. pjt could you post your global vruntime stuff so
> vatsa can have a go at that?
The workload I am up against does experience tons of wakeup (after very short
(microsecond range) bursts of sleeps) and so am skeptical how the global
vruntime would keep up with this kind of workload. I'd be happy to test patches
and give feedback!
- vatsa
next prev parent reply other threads:[~2012-04-24 17:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-24 16:56 [PATCH v1] sched: steer waking task to empty cfs_rq for better latencies Srivatsa Vaddagiri
2012-04-24 16:58 ` Peter Zijlstra
2012-04-24 17:07 ` Srivatsa Vaddagiri [this message]
2012-04-24 17:12 ` Peter Zijlstra
2012-04-24 17:35 ` Srivatsa Vaddagiri
2012-04-24 18:03 ` Rakib Mullick
2012-04-24 17:09 ` Peter Zijlstra
2012-04-24 17:26 ` Srivatsa Vaddagiri
2012-05-02 14:01 ` Srivatsa Vaddagiri
2012-05-03 5:43 ` Nikunj A Dadhania
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