From: Mike Galbraith <efault@gmx.de>
To: Alex Shi <alex.shi@intel.com>
Cc: Paul Turner <pjt@google.com>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Arjan van de Ven <arjan@linux.intel.com>,
Borislav Petkov <bp@alien8.de>,
namhyung@kernel.org, Vincent Guittot <vincent.guittot@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
preeti@linux.vnet.ibm.com,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 09/22] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task
Date: Wed, 23 Jan 2013 02:47:23 +0100 [thread overview]
Message-ID: <1358905643.5752.8.camel@marge.simpson.net> (raw)
In-Reply-To: <50FF3090.1090608@intel.com>
On Wed, 2013-01-23 at 08:36 +0800, Alex Shi wrote:
> On 01/22/2013 05:52 PM, Mike Galbraith wrote:
> > On Tue, 2013-01-22 at 15:50 +0800, Alex Shi wrote:
> >
> >> Thanks for your suggestions and example, Mike!
> >> I just can't understand the your last words here, Sorry. what the
> >> detailed concern of you on 'both performance profiles with either
> >> metric'? Could you like to give your preferred solutions?
> >
> > Hm.. I'll try rephrasing. Any power saving gain will of necessity be
> > paid for in latency currency. I don't have a solution other than make a
> > button, let the user decide whether history influences fast path task
> > placement or not. Any other decision maker will get it wrong.
>
> Um, if no other objection, I'd like to move the runnable load only used
> for power friendly policy -- for this patchset, they are 'powersaving'
> and 'balance', Can I?
Yeah, that should work be fine.
-Mike
next prev parent reply other threads:[~2013-01-23 1:47 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-05 8:37 [PATCH V3 0/22] sched: simplified fork, enable load average into LB and power awareness scheduling Alex Shi
2013-01-05 8:37 ` [PATCH v3 01/22] sched: set SD_PREFER_SIBLING on MC domain to reduce a domain level Alex Shi
2013-01-05 8:37 ` [PATCH v3 02/22] sched: select_task_rq_fair clean up Alex Shi
2013-01-11 4:57 ` Preeti U Murthy
2013-01-05 8:37 ` [PATCH v3 03/22] sched: fix find_idlest_group mess logical Alex Shi
2013-01-11 4:59 ` Preeti U Murthy
2013-01-05 8:37 ` [PATCH v3 04/22] sched: don't need go to smaller sched domain Alex Shi
2013-01-09 17:38 ` Morten Rasmussen
2013-01-10 3:16 ` Mike Galbraith
2013-01-11 5:02 ` Preeti U Murthy
2013-01-05 8:37 ` [PATCH v3 05/22] sched: remove domain iterations in fork/exec/wake Alex Shi
2013-01-09 18:21 ` Morten Rasmussen
2013-01-11 2:46 ` Alex Shi
2013-01-11 10:07 ` Morten Rasmussen
2013-01-11 14:50 ` Alex Shi
2013-01-14 8:55 ` li guang
2013-01-14 9:18 ` Alex Shi
2013-01-11 4:56 ` Preeti U Murthy
2013-01-11 8:01 ` li guang
2013-01-11 14:56 ` Alex Shi
2013-01-14 9:03 ` li guang
2013-01-15 2:34 ` Alex Shi
2013-01-16 1:54 ` li guang
2013-01-11 10:54 ` Morten Rasmussen
2013-01-16 5:43 ` Alex Shi
2013-01-16 7:41 ` Alex Shi
2013-01-05 8:37 ` [PATCH v3 06/22] sched: load tracking bug fix Alex Shi
2013-01-05 8:37 ` [PATCH v3 07/22] sched: set initial load avg of new forked task Alex Shi
2013-01-11 5:10 ` Preeti U Murthy
2013-01-11 5:44 ` Alex Shi
2013-01-05 8:37 ` [PATCH v3 08/22] sched: update cpu load after task_tick Alex Shi
2013-01-05 8:37 ` [PATCH v3 09/22] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task Alex Shi
2013-01-05 8:56 ` Alex Shi
2013-01-06 7:54 ` Alex Shi
2013-01-06 18:31 ` Linus Torvalds
2013-01-07 7:00 ` Preeti U Murthy
2013-01-08 14:27 ` Alex Shi
2013-01-11 6:31 ` Alex Shi
2013-01-21 14:47 ` Alex Shi
2013-01-22 3:20 ` Alex Shi
2013-01-22 6:55 ` Mike Galbraith
2013-01-22 7:50 ` Alex Shi
2013-01-22 9:52 ` Mike Galbraith
2013-01-23 0:36 ` Alex Shi
2013-01-23 1:47 ` Mike Galbraith [this message]
2013-01-23 2:01 ` Alex Shi
2013-01-05 8:37 ` [PATCH v3 10/22] sched: consider runnable load average in move_tasks Alex Shi
2013-01-05 8:37 ` [PATCH v3 11/22] sched: consider runnable load average in effective_load Alex Shi
2013-01-10 11:28 ` Morten Rasmussen
2013-01-11 3:26 ` Alex Shi
2013-01-14 12:01 ` Morten Rasmussen
2013-01-16 5:30 ` Alex Shi
2013-01-05 8:37 ` [PATCH v3 12/22] Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Alex Shi
2013-01-05 8:37 ` [PATCH v3 13/22] sched: add sched_policy in kernel Alex Shi
2013-01-05 8:37 ` [PATCH v3 14/22] sched: add sched_policy and it's sysfs interface Alex Shi
2013-01-14 6:53 ` Namhyung Kim
2013-01-14 8:11 ` Alex Shi
2013-01-05 8:37 ` [PATCH v3 15/22] sched: log the cpu utilization at rq Alex Shi
2013-01-10 11:40 ` Morten Rasmussen
2013-01-11 3:30 ` Alex Shi
2013-01-14 13:59 ` Morten Rasmussen
2013-01-16 5:53 ` Alex Shi
2013-01-05 8:37 ` [PATCH v3 16/22] sched: add power aware scheduling in fork/exec/wake Alex Shi
2013-01-10 15:01 ` Morten Rasmussen
2013-01-11 7:08 ` Alex Shi
2013-01-14 16:09 ` Morten Rasmussen
2013-01-16 6:02 ` Alex Shi
2013-01-16 14:27 ` Morten Rasmussen
2013-01-17 5:47 ` Namhyung Kim
2013-01-18 13:41 ` Alex Shi
2013-01-14 7:03 ` Namhyung Kim
2013-01-14 8:30 ` Alex Shi
2013-01-05 8:37 ` [PATCH v3 17/22] sched: packing small tasks in wake/exec balancing Alex Shi
2013-01-10 17:17 ` Morten Rasmussen
2013-01-11 3:47 ` Alex Shi
2013-01-14 7:13 ` Namhyung Kim
2013-01-16 6:11 ` Alex Shi
2013-01-16 12:52 ` Namhyung Kim
2013-01-14 17:00 ` Morten Rasmussen
2013-01-16 7:32 ` Alex Shi
2013-01-16 15:08 ` Morten Rasmussen
2013-01-18 14:06 ` Alex Shi
2013-01-05 8:37 ` [PATCH v3 18/22] sched: add power/performance balance allowed flag Alex Shi
2013-01-05 8:37 ` [PATCH v3 19/22] sched: pull all tasks from source group Alex Shi
2013-01-05 8:37 ` [PATCH v3 20/22] sched: don't care if the local group has capacity Alex Shi
2013-01-05 8:37 ` [PATCH v3 21/22] sched: power aware load balance, Alex Shi
2013-01-05 8:37 ` [PATCH v3 22/22] sched: lazy powersaving balance Alex Shi
2013-01-14 8:39 ` Namhyung Kim
2013-01-14 8:45 ` Alex Shi
2013-01-09 17:16 ` [PATCH V3 0/22] sched: simplified fork, enable load average into LB and power awareness scheduling Morten Rasmussen
2013-01-10 3:49 ` Alex Shi
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