From: Jason Low <jason.low2@hp.com>
To: Yuyang Du <yuyang.du@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org, Ben Segall <bsegall@google.com>,
Waiman Long <Waiman.Long@hp.com>, Mel Gorman <mgorman@suse.de>,
Mike Galbraith <umgwanakikbuti@gmail.com>,
Rik van Riel <riel@redhat.com>,
Aswin Chandramouleeswaran <aswin@hp.com>,
Chegu Vinod <chegu_vinod@hp.com>,
Scott J Norton <scott.norton@hp.com>
Subject: Re: [PATCH] sched: Reduce contention in update_cfs_rq_blocked_load
Date: Tue, 05 Aug 2014 08:42:57 -0700 [thread overview]
Message-ID: <1407253377.2487.11.camel@j-VirtualBox> (raw)
In-Reply-To: <20140804191526.GA2480@intel.com>
On Tue, 2014-08-05 at 03:15 +0800, Yuyang Du wrote:
> Hi Jason,
>
> I am not sure whether you noticed my latest work: rewriting per entity load average
>
> http://article.gmane.org/gmane.linux.kernel/1760754
> http://article.gmane.org/gmane.linux.kernel/1760755
> http://article.gmane.org/gmane.linux.kernel/1760757
> http://article.gmane.org/gmane.linux.kernel/1760756
>
> which simply does not track blocked load average at all. Are you interested in
> testing the patchset with the workload you have?
Hi Yuyang, yes I can also test your latest patchset with some of the
AIM7 workloads. Not needing extra overhead for the blocked load should
also address this contention in update_cfs_rq_blocked_load().
> The comparison can also help
> us understand the rewrite. Overall, per our tests, the overhead should be less,
> and perf should be better.
next prev parent reply other threads:[~2014-08-05 15:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-04 20:28 [PATCH] sched: Reduce contention in update_cfs_rq_blocked_load Jason Low
2014-08-04 19:15 ` Yuyang Du
2014-08-04 21:42 ` Yuyang Du
2014-08-05 15:42 ` Jason Low [this message]
2014-08-06 18:21 ` Jason Low
2014-08-07 18:02 ` Yuyang Du
2014-08-08 4:18 ` Jason Low
2014-08-07 22:30 ` Yuyang Du
2014-08-08 7:11 ` Peter Zijlstra
2014-08-07 23:15 ` Yuyang Du
2014-08-08 0:02 ` Yuyang Du
2014-08-04 20:52 ` bsegall
2014-08-04 21:27 ` Jason Low
2014-08-11 17:31 ` Jason Low
2014-08-04 21:04 ` Peter Zijlstra
2014-08-05 17:53 ` Waiman Long
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