From: Mike Galbraith <efault@gmx.de>
To: svaidy@linux.vnet.ibm.com
Cc: Ingo Molnar <mingo@elte.hu>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH v7 0/8] Tunable sched_mc_power_savings=n
Date: Tue, 06 Jan 2009 18:48:37 +0100 [thread overview]
Message-ID: <1231264117.5254.23.camel@marge.simson.net> (raw)
In-Reply-To: <20090106150709.GG4574@dirshya.in.ibm.com>
On Tue, 2009-01-06 at 20:37 +0530, Vaidyanathan Srinivasan wrote:
> Hi Mike,
>
> Thanks for the detailed benchmark reports. Glad to hear that
> sched_mc=2 is helping in most scenarios. Though we would be tempted to
> make it default, I would still like to default to zero in order to
> provide base line performance. I would expect end users to flip the
> settings to sched_mc=2 if it helps their workload in terms of
> performance and/or power savings.
The mysql+oltp peak loss is there either way, but with 2, mid range
throughput is ~28 baseline. High end (yawn) is better, and the nfs
kbuild performs better than baseline.
Baseline performance, at least wrt mysql+oltp doesn't seem to be an
option. Not my call. More testing and more testers required I suppose.
-Mike
next prev parent reply other threads:[~2009-01-06 17:48 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-18 17:55 [PATCH v7 0/8] Tunable sched_mc_power_savings=n Vaidyanathan Srinivasan
2008-12-18 17:56 ` [PATCH v7 1/8] sched: convert BALANCE_FOR_xx_POWER to inline functions Vaidyanathan Srinivasan
2008-12-18 17:56 ` [PATCH v7 2/8] sched: Framework for sched_mc/smt_power_savings=N Vaidyanathan Srinivasan
2008-12-18 17:56 ` [PATCH v7 3/8] sched: favour lower logical cpu number for sched_mc balance Vaidyanathan Srinivasan
2008-12-18 17:56 ` [PATCH v7 4/8] sched: nominate preferred wakeup cpu Vaidyanathan Srinivasan
2008-12-18 18:12 ` Balbir Singh
2008-12-19 21:55 ` Andrew Morton
2008-12-19 22:19 ` Andrew Morton
2008-12-19 22:27 ` Ingo Molnar
2008-12-19 22:31 ` Ingo Molnar
2008-12-19 22:38 ` Andrew Morton
2008-12-19 22:54 ` Ingo Molnar
2008-12-20 4:36 ` Vaidyanathan Srinivasan
2008-12-20 4:44 ` Andrew Morton
2008-12-20 7:54 ` Ingo Molnar
2008-12-20 10:02 ` Vaidyanathan Srinivasan
2008-12-20 10:36 ` Vaidyanathan Srinivasan
2008-12-20 10:56 ` Vaidyanathan Srinivasan
2008-12-21 8:46 ` Ingo Molnar
2008-12-18 17:56 ` [PATCH v7 5/8] sched: bias task wakeups to preferred semi-idle packages Vaidyanathan Srinivasan
2008-12-18 18:11 ` Balbir Singh
2008-12-18 17:56 ` [PATCH v7 6/8] sched: activate active load balancing in new idle cpus Vaidyanathan Srinivasan
2008-12-18 17:56 ` [PATCH v7 7/8] sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0 Vaidyanathan Srinivasan
2008-12-18 17:56 ` [PATCH v7 8/8] sched: idle_balance() does not call load_balance_newidle() Vaidyanathan Srinivasan
2008-12-18 18:12 ` Balbir Singh
2008-12-18 20:17 ` Ingo Molnar
2008-12-18 20:19 ` [PATCH v7 0/8] Tunable sched_mc_power_savings=n Ingo Molnar
2008-12-18 20:31 ` Ingo Molnar
2008-12-19 8:29 ` Vaidyanathan Srinivasan
2008-12-19 8:24 ` Vaidyanathan Srinivasan
2008-12-19 13:34 ` Vaidyanathan Srinivasan
2008-12-29 23:43 ` MinChan Kim
2008-12-30 2:48 ` Balbir Singh
2008-12-30 6:21 ` Ingo Molnar
2008-12-30 6:44 ` Balbir Singh
2008-12-30 7:20 ` Ingo Molnar
2008-12-30 18:07 ` Vaidyanathan Srinivasan
2009-01-02 7:26 ` Vaidyanathan Srinivasan
2009-01-02 22:16 ` Ingo Molnar
2009-01-03 7:29 ` Mike Galbraith
2009-01-03 10:16 ` Vaidyanathan Srinivasan
2009-01-03 11:22 ` Mike Galbraith
2009-01-04 15:00 ` Mike Galbraith
2009-01-04 18:19 ` Vaidyanathan Srinivasan
2009-01-04 19:52 ` Mike Galbraith
2009-01-05 3:20 ` Vaidyanathan Srinivasan
2009-01-05 4:40 ` Mike Galbraith
2009-01-05 6:36 ` Mike Galbraith
2009-01-05 15:19 ` Mike Galbraith
2009-01-06 9:31 ` Mike Galbraith
2009-01-06 15:07 ` Vaidyanathan Srinivasan
2009-01-06 17:48 ` Mike Galbraith [this message]
2009-01-06 18:45 ` Balbir Singh
2009-01-07 8:59 ` Mike Galbraith
2009-01-07 11:26 ` Vaidyanathan Srinivasan
2009-01-07 14:36 ` Mike Galbraith
2009-01-07 15:35 ` Vaidyanathan Srinivasan
2009-01-08 8:06 ` Mike Galbraith
2009-01-08 17:46 ` Vaidyanathan Srinivasan
2009-01-09 6:00 ` Mike Galbraith
2009-01-06 14:54 ` Vaidyanathan Srinivasan
2008-12-30 17:31 ` Vaidyanathan Srinivasan
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