From: Mike Galbraith <bitbucket@online.de>
To: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
"svaidy@linux.vnet.ibm.com" <svaidy@linux.vnet.ibm.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Viresh Kumar <viresh.kumar@linaro.org>,
Amit Kucheria <amit.kucheria@linaro.org>,
Morten Rasmussen <Morten.Rasmussen@arm.com>,
Paul McKenney <paul.mckenney@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
Arjan van de Ven <arjan@linux.intel.com>,
Ingo Molnar <mingo@kernel.org>, Paul Turner <pjt@google.com>,
Venki Pallipadi <venki@google.com>,
Robin Randhawa <robin.randhawa@arm.com>,
Lists linaro-dev <linaro-dev@lists.linaro.org>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Alex Shi <alex.shi@intel.com>,
srikar@linux.vnet.ibm.com
Subject: Re: sched: Consequences of integrating the Per Entity Load Tracking Metric into the Load Balancer
Date: Fri, 04 Jan 2013 12:41:19 +0100 [thread overview]
Message-ID: <1357299679.4578.31.camel@marge.simpson.net> (raw)
In-Reply-To: <50E55F99.6090104@linux.vnet.ibm.com>
On Thu, 2013-01-03 at 16:08 +0530, Preeti U Murthy wrote:
> Hi Mike,
>
> Thank you very much for your feedback.Considering your suggestions,I have posted out a
> proposed solution to prevent select_idle_sibling() from becoming a disadvantage to normal
> load balancing,rather aiding it.
>
> **This patch is *without* the enablement of the per entity load tracking metric.**
>
> This is with an intention to correct the existing select_idle_sibling() mess before
> going ahead.
Well, on the bright side, this is much kinder to light load tbench on
4x10 core (+ht) box than current bounce happy select_idle_sibling(). At
the heavy load end I'm losing heaping truckloads of throughput though,
likely some migration rate limiting would fix that up.
select_idle_sibling() doesn't have much of a pretty face these days, but
its evil hag face shows more prominently than ever, so making it dead is
a great goal ;-)
-Mike
next prev parent reply other threads:[~2013-01-04 11:41 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-02 4:22 sched: Consequences of integrating the Per Entity Load Tracking Metric into the Load Balancer Preeti U Murthy
2013-01-02 8:12 ` Mike Galbraith
2013-01-03 10:38 ` Preeti U Murthy
2013-01-03 20:06 ` Mike Galbraith
2013-01-04 11:41 ` Mike Galbraith [this message]
2013-01-05 8:13 ` Mike Galbraith
2013-01-06 16:32 ` Mike Galbraith
2013-01-07 5:29 ` Preeti U Murthy
2013-01-07 7:36 ` Mike Galbraith
2013-01-08 8:41 ` Preeti U Murthy
2013-01-16 14:08 ` Alex Shi
2013-01-17 5:17 ` Namhyung Kim
2013-01-17 10:16 ` Preeti U Murthy
2013-01-17 13:41 ` Alex Shi
2013-01-24 3:13 ` Alex Shi
2013-01-17 8:45 ` Preeti U Murthy
2013-01-07 15:48 ` Vincent Guittot
2013-01-08 6:06 ` Preeti U Murthy
2013-01-08 14:04 ` Vincent Guittot
2013-01-09 3:14 ` Preeti U Murthy
2013-01-20 15:30 ` Alex Shi
2013-01-20 15:52 ` Alex Shi
2013-01-21 2:40 ` Preeti U Murthy
2013-01-21 3:26 ` Alex Shi
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