From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Vladimir Davydov <VDavydov@parallels.com>
Cc: Paul Turner <pjt@google.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Bharata B Rao <bharata@linux.vnet.ibm.com>,
Dhaval Giani <dhaval.giani@gmail.com>,
Balbir Singh <bsingharora@gmail.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 Emelianov <xemul@parallels.com>,
Jason Baron <jbaron@redhat.com>
Subject: Re: [patch 00/18] CFS Bandwidth Control v7.2
Date: Mon, 19 Sep 2011 10:33:04 +0200 [thread overview]
Message-ID: <1316421184.1511.0.camel@twins> (raw)
In-Reply-To: <BABF7462-9665-4BB1-B3BD-566A5A3D6F7A@parallels.com>
On Mon, 2011-09-19 at 12:22 +0400, Vladimir Davydov wrote:
> But communicating tasks do not necessarily wake each other even if
> they exchange data through the pipe. And of course, if they use shared
> memory (e.g. threads), it is not obligatory at all. Also, the
> wake-affine path is cpu-load aware, i.e. it tries not to overload a
> cpu it is going to wake a task on. For instance, if we run a context
> switch test on an idle host, the two tasks will be executing on
> different cpus although it is better to execute them together on the
> same cpu.
This is not a problem specific to cgroups, and thus the solution
shouldn't ever live as something related to cgroups.
prev parent reply other threads:[~2011-09-19 8:33 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-21 16:43 [patch 00/18] CFS Bandwidth Control v7.2 Paul Turner
2011-07-21 16:43 ` [patch 01/18] sched: (fixlet) dont update shares twice on on_rq parent Paul Turner
2011-07-22 11:06 ` Kamalesh Babulal
2011-07-21 16:43 ` [patch 02/18] sched: hierarchical task accounting for SCHED_OTHER Paul Turner
2011-08-14 16:15 ` [tip:sched/core] sched: Implement " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 03/18] sched: introduce primitives to account for CFS bandwidth tracking Paul Turner
2011-07-22 11:14 ` Kamalesh Babulal
2011-08-14 16:17 ` [tip:sched/core] sched: Introduce " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 04/18] sched: validate CFS quota hierarchies Paul Turner
2011-08-14 16:19 ` [tip:sched/core] sched: Validate " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 05/18] sched: accumulate per-cfs_rq cpu usage and charge against bandwidth Paul Turner
2011-08-14 16:21 ` [tip:sched/core] sched: Accumulate " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 06/18] sched: add a timer to handle CFS bandwidth refresh Paul Turner
2011-08-14 16:23 ` [tip:sched/core] sched: Add " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 07/18] sched: expire invalid runtime Paul Turner
2011-08-14 16:24 ` [tip:sched/core] sched: Expire " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 08/18] sched: add support for throttling group entities Paul Turner
2011-08-08 15:46 ` Lin Ming
2011-08-08 16:00 ` Peter Zijlstra
2011-08-08 16:16 ` Paul Turner
2011-08-14 16:26 ` [tip:sched/core] sched: Add " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 09/18] sched: add support for unthrottling " Paul Turner
2011-08-14 16:27 ` [tip:sched/core] sched: Add " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 10/18] sched: allow for positional tg_tree walks Paul Turner
2011-08-14 16:29 ` [tip:sched/core] sched: Allow " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 11/18] sched: prevent interactions with throttled entities Paul Turner
2011-07-22 11:26 ` Kamalesh Babulal
2011-07-22 11:37 ` Peter Zijlstra
2011-07-22 11:41 ` Kamalesh Babulal
2011-07-22 11:43 ` Peter Zijlstra
2011-07-22 18:16 ` Kamalesh Babulal
2011-08-14 16:30 ` [tip:sched/core] sched: Prevent " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 12/18] sched: prevent buddy " Paul Turner
2011-08-14 16:32 ` [tip:sched/core] sched: Prevent " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 13/18] sched: migrate throttled tasks on HOTPLUG Paul Turner
2011-08-14 16:34 ` [tip:sched/core] sched: Migrate " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 14/18] sched: throttle entities exceeding their allowed bandwidth Paul Turner
2011-08-14 16:35 ` [tip:sched/core] sched: Throttle " tip-bot for Paul Turner
2011-07-21 16:43 ` [patch 15/18] sched: add exports tracking cfs bandwidth control statistics Paul Turner
2011-08-14 16:37 ` [tip:sched/core] sched: Add " tip-bot for Nikhil Rao
2011-07-21 16:43 ` [patch 16/18] sched: return unused runtime on group dequeue Paul Turner
2011-08-14 16:39 ` [tip:sched/core] sched: Return " tip-bot for Paul Turner
2011-07-21 16:43 ` [RFT][patch 17/18] sched: use jump labels to reduce overhead when bandwidth control is inactive Paul Turner
2011-07-21 16:43 ` [patch 18/18] sched: add documentation for bandwidth control Paul Turner
2011-08-14 16:41 ` [tip:sched/core] sched: Add " tip-bot for Bharata B Rao
2011-07-21 23:01 ` [patch 00/18] CFS Bandwidth Control v7.2 Paul Turner
2011-07-25 14:58 ` Peter Zijlstra
2011-07-25 15:00 ` Peter Zijlstra
2011-07-25 16:21 ` Paul E. McKenney
2011-07-25 16:28 ` Peter Zijlstra
2011-07-25 16:46 ` Paul E. McKenney
2011-07-25 17:08 ` Peter Zijlstra
2011-07-25 17:11 ` Dhaval Giani
2011-07-25 17:35 ` Peter Zijlstra
2011-07-28 2:59 ` Paul Turner
2011-09-13 12:10 ` Vladimir Davydov
2011-09-13 14:00 ` Peter Zijlstra
2011-09-16 8:06 ` Paul Turner
2011-09-19 8:22 ` Vladimir Davydov
2011-09-19 8:33 ` Peter Zijlstra [this message]
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