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From: Hu Tao <hutao@cn.fujitsu.com>
To: Paul Turner <pjt@google.com>
Cc: linux-kernel@vger.kernel.org,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Bharata B Rao <bharata@linux.vnet.ibm.com>,
	Dhaval Giani <dhaval.giani@gmail.com>,
	Balbir Singh <balbir@linux.vnet.ibm.com>,
	Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@in.ibm.com>,
	Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
	Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
	Ingo Molnar <mingo@elte.hu>, Pavel Emelyanov <xemul@openvz.org>
Subject: Re: [patch 00/17] CFS Bandwidth Control v7.1
Date: Mon, 11 Jul 2011 09:22:07 +0800	[thread overview]
Message-ID: <20110711012207.GB2135@localhost.localdomain> (raw)
In-Reply-To: <20110707053036.173186930@google.com>

On Wed, Jul 06, 2011 at 10:30:36PM -0700, Paul Turner wrote:
> Hi all,
> 
> Please find attached an incremental revision on v7 of bandwidth control.
> 
> The only real functional change is an improvement to update shares only as we
> leave a throttled state.  The remainder is largely refactoring, expansion of
> comments, and code clean-up.
> 
> Hidetoshi Seto and Hu Tao have been kind enough to run performance benchmarks
> against v7 measuring the scheduling path overheads versus pipe-test-100k.
> Results can be found at:
> 
> https://lkml.org/lkml/2011/6/24/10
> https://lkml.org/lkml/2011/7/4/347
> 
> The summary results (from Hu Tao's most recent run) are:
>                                             cycles                   instructions            branches
> -------------------------------------------------------------------------------------------------------------------
> base                                        7,526,317,497           8,666,579,347            1,771,078,445
> +patch, cgroup not enabled                  7,610,354,447 (1.12%)   8,569,448,982 (-1.12%)   1,751,675,193 (-0.11%)
> +patch, 10000000000/1000(quota/period)      7,856,873,327 (4.39%)   8,822,227,540 (1.80%)    1,801,766,182 (1.73%)
> +patch, 10000000000/10000(quota/period)     7,797,711,600 (3.61%)   8,754,747,746 (1.02%)    1,788,316,969 (0.97%)
> +patch, 10000000000/100000(quota/period)    7,777,784,384 (3.34%)   8,744,979,688 (0.90%)    1,786,319,566 (0.86%)
> +patch, 10000000000/1000000(quota/period)   7,802,382,802 (3.67%)   8,755,638,235 (1.03%)    1,788,601,070 (0.99%)
> ------------------------------------------------------------------------------------------------------------------

Hi Paul,

I'm sorry these data are got by a config with some debug options on.
I've re-tested with a fine config, see

https://lkml.org/lkml/2011/7/6/516

-- 
Thanks,
Hu Tao

      parent reply	other threads:[~2011-07-11  1:22 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-07  5:30 [patch 00/17] CFS Bandwidth Control v7.1 Paul Turner
2011-07-07  5:30 ` [patch 01/17] sched: (fixlet) dont update shares twice on on_rq parent Paul Turner
2011-07-21 18:28   ` [tip:sched/core] sched: Don't " tip-bot for Paul Turner
2011-07-07  5:30 ` [patch 02/17] sched: hierarchical task accounting for SCHED_OTHER Paul Turner
2011-07-07  5:30 ` [patch 03/17] sched: introduce primitives to account for CFS bandwidth tracking Paul Turner
2011-07-07 13:48   ` Peter Zijlstra
2011-07-07 21:30     ` Paul Turner
2011-07-07  5:30 ` [patch 04/17] sched: validate CFS quota hierarchies Paul Turner
2011-07-07  5:30 ` [patch 05/17] sched: accumulate per-cfs_rq cpu usage and charge against bandwidth Paul Turner
2011-07-07  5:30 ` [patch 06/17] sched: add a timer to handle CFS bandwidth refresh Paul Turner
2011-07-07  5:30 ` [patch 07/17] sched: expire invalid runtime Paul Turner
2011-07-07  5:30 ` [patch 08/17] sched: add support for throttling group entities Paul Turner
2011-07-07  5:30 ` [patch 09/17] sched: add support for unthrottling " Paul Turner
2011-07-07  5:30 ` [patch 10/17] sched: allow for positional tg_tree walks Paul Turner
2011-07-07  5:30 ` [patch 11/17] sched: prevent interactions with throttled entities Paul Turner
2011-07-07  5:30 ` [patch 12/17] sched: prevent buddy " Paul Turner
2011-07-07  5:30 ` [patch 13/17] sched: migrate throttled tasks on HOTPLUG Paul Turner
2011-07-07  5:30 ` [patch 14/17] sched: throttle entities exceeding their allowed bandwidth Paul Turner
2011-07-07  5:30 ` [patch 15/17] sched: add exports tracking cfs bandwidth control statistics Paul Turner
2011-07-07  5:30 ` [patch 16/17] sched: return unused runtime on group dequeue Paul Turner
2011-07-07  5:30 ` [patch 17/17] sched: add documentation for bandwidth control Paul Turner
2011-07-07 11:13 ` [patch 00/17] CFS Bandwidth Control v7.1 Peter Zijlstra
2011-07-11  1:22   ` Hu Tao
2011-07-07 11:23 ` Ingo Molnar
2011-07-07 11:28   ` Peter Zijlstra
2011-07-07 14:38   ` Peter Zijlstra
2011-07-07 14:51     ` Ingo Molnar
2011-07-07 14:54       ` Peter Zijlstra
2011-07-07 14:56         ` Ingo Molnar
2011-07-07 16:23           ` Jason Baron
2011-07-07 17:20             ` Peter Zijlstra
2011-07-07 18:15               ` Jason Baron
2011-07-07 20:36                 ` jump_label defaults (was Re: [patch 00/17] CFS Bandwidth Control v7.1) Peter Zijlstra
2011-07-08  9:20                   ` Peter Zijlstra
2011-07-08 15:47                     ` Jason Baron
2011-07-07 16:52     ` [patch 00/17] CFS Bandwidth Control v7.1 Andi Kleen
2011-07-07 17:08       ` Peter Zijlstra
2011-07-07 17:59     ` Peter Zijlstra
2011-07-07 19:36       ` Jason Baron
2011-07-08  7:45       ` Paul Turner
2011-07-08  7:39     ` Paul Turner
2011-07-08 10:32       ` Peter Zijlstra
2011-07-09  7:34         ` Paul Turner
2011-07-10 18:12           ` Ingo Molnar
2011-07-07 14:06 ` Peter Zijlstra
2011-07-08  7:35   ` Paul Turner
2011-07-11  1:22 ` Hu Tao [this message]

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