From: Mike Galbraith <efault@gmx.de>
To: arjan@infradead.org
Cc: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org,
stable@kernel.org, peterz@infradead.org, tglx@linutronix.de,
mingo@elte.hu, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:sched/core] sched: Check for an idle shared cache in select_task_rq_fair()
Date: Wed, 04 Nov 2009 22:41:57 +0100 [thread overview]
Message-ID: <1257370917.11327.7.camel@marge.simson.net> (raw)
In-Reply-To: <1257367035.9923.3.camel@marge.simson.net>
On Wed, 2009-11-04 at 21:37 +0100, Mike Galbraith wrote:
> On Wed, 2009-11-04 at 19:33 +0000, tip-bot for Mike Galbraith wrote:
> > Commit-ID: a1f84a3ab8e002159498814eaa7e48c33752b04b
> > Gitweb: http://git.kernel.org/tip/a1f84a3ab8e002159498814eaa7e48c33752b04b
> > Author: Mike Galbraith <efault@gmx.de>
> > AuthorDate: Tue, 27 Oct 2009 15:35:38 +0100
> > Committer: Ingo Molnar <mingo@elte.hu>
> > CommitDate: Wed, 4 Nov 2009 18:46:22 +0100
> >
> > sched: Check for an idle shared cache in select_task_rq_fair()
> >
> > When waking affine, check for an idle shared cache, and if
> > found, wake to that CPU/sibling instead of the waker's CPU.
>
> This one still wants some work. It's not playing well with 1b9508f.
Still does want some work (on the tail), but those numbers were from a
failed experiment kernel, not d995f1d. Below are the correct numbers.
tip v2.6.32-rc6-1731-gc5bb4b1
mysql+oltp
clients 1 2 4 8 16 32 64 128 256
tip 10447.14 19734.58 36038.18 35776.85 34662.76 33682.30 32256.22 28770.99 25323.23
10462.61 19580.14 36050.48 35942.63 35054.84 33988.40 32423.89 29259.65 25892.24
10501.02 19231.27 36007.03 35985.32 35060.79 33945.47 32400.42 29140.84 25716.16
tip avg 10470.25 19515.33 36031.89 35901.60 34926.13 33872.05 32360.17 29057.16 25643.87
tip v2.6.32-rc6-1731-gc5bb4b1 + 1b9508f (Rate-limit newidle)
tip+ 10095.64 19989.67 36449.85 35923.98 35024.24 34026.61 32411.75 28965.77 27287.96
10764.98 19864.03 36632.78 36338.00 35610.52 34439.88 32942.57 29889.18 27426.12
10734.48 19572.63 36507.90 36236.36 35486.51 34443.86 32938.90 30136.39 27186.61
tip+ avg 10531.70 19808.77 36530.17 36166.11 35373.75 34303.45 32764.40 29663.78 27300.23
1.005 1.015 1.013 1.007 1.012 1.012 1.012 1.020 1.064
v2.6.32-rc6-1796-gd995f1d
10745.30 19684.71 36367.25 35890.25 34598.08 33672.37 32327.99 28744.09 25393.00
10549.41 19747.85 36778.96 36410.58 35531.90 34292.03 32603.66 29487.77 25351.09
10678.30 19944.74 36789.44 36403.78 35523.40 34267.10 32659.60 29359.59 25751.93
avg 10657.67 19792.43 36645.21 36234.87 35217.79 34077.16 32530.41 29197.15 25498.67
vs c5bb4b1 1.017 1.014 1.017 1.009 1.008 1.006 1.005 1.004 .994
Lost the tail gain, gained peak. Drink one, spill one, give one away.
-Mike
next prev parent reply other threads:[~2009-11-04 21:45 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-24 19:58 [PATCH 1/3] sched: Enable wake balancing for the SMT/HT domain Arjan van de Ven
2009-10-24 20:04 ` [PATCH 2/3] sched: Add aggressive load balancing for certain situations Arjan van de Ven
2009-10-24 20:07 ` [PATCH 3/3] sched: Disable affine wakeups by default Arjan van de Ven
2009-10-25 6:55 ` Mike Galbraith
2009-10-25 16:51 ` Arjan van de Ven
2009-10-25 17:38 ` Mike Galbraith
2009-10-25 19:33 ` Arjan van de Ven
2009-10-25 22:04 ` Mike Galbraith
2009-10-26 1:53 ` Peter Zijlstra
2009-10-26 4:38 ` Mike Galbraith
2009-10-26 4:52 ` Arjan van de Ven
2009-10-26 5:08 ` Mike Galbraith
2009-10-26 5:36 ` Arjan van de Ven
2009-10-26 5:47 ` Mike Galbraith
2009-10-26 5:57 ` Mike Galbraith
2009-10-26 7:01 ` Ingo Molnar
2009-10-26 7:05 ` Arjan van de Ven
2009-10-26 11:33 ` Suresh Siddha
2009-11-10 21:59 ` Peter Zijlstra
2009-11-11 6:01 ` Arjan van de Ven
2009-10-27 14:35 ` Mike Galbraith
2009-10-28 7:25 ` Mike Galbraith
2009-10-28 18:36 ` Mike Galbraith
2009-11-04 19:33 ` [tip:sched/core] sched: Check for an idle shared cache in select_task_rq_fair() tip-bot for Mike Galbraith
2009-11-04 20:37 ` Mike Galbraith
2009-11-04 21:41 ` Mike Galbraith [this message]
2009-11-05 9:30 ` Ingo Molnar
2009-11-05 9:57 ` Mike Galbraith
2009-11-05 10:00 ` Mike Galbraith
2009-11-06 7:09 ` [tip:sched/core] sched: Fix affinity logic " tip-bot for Mike Galbraith
2009-10-26 5:21 ` [PATCH 3/3] sched: Disable affine wakeups by default Mike Galbraith
2009-10-25 8:01 ` Peter Zijlstra
2009-10-25 8:01 ` [PATCH 2/3] sched: Add aggressive load balancing for certain situations Peter Zijlstra
2009-10-25 11:48 ` Peter Zijlstra
2009-10-25 8:03 ` [PATCH 1/3] sched: Enable wake balancing for the SMT/HT domain Peter Zijlstra
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