From: Alex Shi <alex.shi@intel.com>
To: Mike Galbraith <efault@gmx.de>
Cc: Borislav Petkov <bp@alien8.de>,
torvalds@linux-foundation.org, mingo@redhat.com,
peterz@infradead.org, tglx@linutronix.de,
akpm@linux-foundation.org, arjan@linux.intel.com, pjt@google.com,
namhyung@kernel.org, vincent.guittot@linaro.org,
gregkh@linuxfoundation.org, preeti@linux.vnet.ibm.com,
viresh.kumar@linaro.org, linux-kernel@vger.kernel.org
Subject: Re: [patch v4 0/18] sched: simplified fork, release load avg and power awareness scheduling
Date: Mon, 28 Jan 2013 13:51:14 +0800 [thread overview]
Message-ID: <510611D2.1020007@intel.com> (raw)
In-Reply-To: <1359350266.5783.39.camel@marge.simpson.net>
On 01/28/2013 01:17 PM, Mike Galbraith wrote:
> On Sun, 2013-01-27 at 16:51 +0100, Mike Galbraith wrote:
>> On Sun, 2013-01-27 at 21:25 +0800, Alex Shi wrote:
>>> On 01/27/2013 06:35 PM, Borislav Petkov wrote:
>>>> On Sun, Jan 27, 2013 at 05:36:25AM +0100, Mike Galbraith wrote:
>>>>> With aim7 compute on 4 node 40 core box, I see stable throughput
>>>>> improvement at tasks = nr_cores and below w. balance and powersaving.
>> ...
>>>> Ok, this is sick. How is balance and powersaving better than perf? Both
>>>> have much more jobs per minute than perf; is that because we do pack
>>>> much more tasks per cpu with balance and powersaving?
>>>
>>> Maybe it is due to the lazy balancing on balance/powersaving. You can
>>> check the CS times in /proc/pid/status.
>>
>> Well, it's not wakeup path, limiting entry frequency per waker did zip
>> squat nada to any policy throughput.
>
> monteverdi:/abuild/mike/:[0]# echo powersaving > /sys/devices/system/cpu/sched_policy/current_sched_policy
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 043321 00058616
> 043313 00058616
> 043318 00058968
> 043317 00058968
> 043316 00059184
> 043319 00059192
> 043320 00059048
> 043314 00059048
> 043312 00058176
> 043315 00058184
> monteverdi:/abuild/mike/:[0]# echo balance > /sys/devices/system/cpu/sched_policy/current_sched_policy
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 043337 00053448
> 043333 00053456
> 043338 00052992
> 043331 00053448
> 043332 00053488
> 043335 00053496
> 043334 00053480
> 043329 00053288
> 043336 00053464
> 043330 00053496
> monteverdi:/abuild/mike/:[0]# echo performance > /sys/devices/system/cpu/sched_policy/current_sched_policy
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 043348 00052488
> 043344 00052488
> 043349 00052744
> 043343 00052504
> 043347 00052504
> 043352 00052888
> 043345 00052504
> 043351 00052496
> 043346 00052496
> 043350 00052304
> monteverdi:/abuild/mike/:[0]#
similar with aim7 results. Thanks, Mike!
Wold you like to collect vmstat info in background?
>
> Zzzt. Wish I could turn turbo thingy off.
Do you mean the turbo mode of cpu frequency? I remember some of machine
can disable it in BIOS.
>
> -Mike
>
--
Thanks Alex
next prev parent reply other threads:[~2013-01-28 5:50 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-24 3:06 [patch v4 0/18] sched: simplified fork, release load avg and power awareness scheduling Alex Shi
2013-01-24 3:06 ` [patch v4 01/18] sched: set SD_PREFER_SIBLING on MC domain to reduce a domain level Alex Shi
2013-02-12 10:11 ` Peter Zijlstra
2013-02-13 13:22 ` Alex Shi
2013-02-15 12:38 ` Peter Zijlstra
2013-02-16 5:16 ` Alex Shi
2013-02-13 14:17 ` Alex Shi
2013-01-24 3:06 ` [patch v4 02/18] sched: select_task_rq_fair clean up Alex Shi
2013-02-12 10:14 ` Peter Zijlstra
2013-02-13 14:44 ` Alex Shi
2013-01-24 3:06 ` [patch v4 03/18] sched: fix find_idlest_group mess logical Alex Shi
2013-02-12 10:16 ` Peter Zijlstra
2013-02-13 15:07 ` Alex Shi
2013-01-24 3:06 ` [patch v4 04/18] sched: don't need go to smaller sched domain Alex Shi
2013-01-24 3:06 ` [patch v4 05/18] sched: quicker balancing on fork/exec/wake Alex Shi
2013-02-12 10:22 ` Peter Zijlstra
2013-02-14 3:13 ` Alex Shi
2013-02-14 8:12 ` Preeti U Murthy
2013-02-14 14:08 ` Alex Shi
2013-02-15 13:00 ` Peter Zijlstra
2013-01-24 3:06 ` [patch v4 06/18] sched: give initial value for runnable avg of sched entities Alex Shi
2013-02-12 10:23 ` Peter Zijlstra
2013-01-24 3:06 ` [patch v4 07/18] sched: set initial load avg of new forked task Alex Shi
2013-02-12 10:26 ` Peter Zijlstra
2013-02-13 15:14 ` Alex Shi
2013-02-13 15:41 ` Paul Turner
2013-02-14 13:07 ` Alex Shi
2013-02-19 11:34 ` Paul Turner
2013-02-20 4:18 ` Preeti U Murthy
2013-02-20 5:13 ` Alex Shi
2013-01-24 3:06 ` [patch v4 08/18] Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Alex Shi
2013-02-12 10:27 ` Peter Zijlstra
2013-02-13 15:23 ` Alex Shi
2013-02-13 15:45 ` Paul Turner
2013-02-14 3:07 ` Preeti U Murthy
2013-01-24 3:06 ` [patch v4 09/18] sched: add sched_policies in kernel Alex Shi
2013-02-12 10:36 ` Peter Zijlstra
2013-02-13 15:41 ` Alex Shi
2013-01-24 3:06 ` [patch v4 10/18] sched: add sysfs interface for sched_policy selection Alex Shi
2013-01-24 3:06 ` [patch v4 11/18] sched: log the cpu utilization at rq Alex Shi
2013-02-12 10:39 ` Peter Zijlstra
2013-02-14 3:10 ` Alex Shi
2013-01-24 3:06 ` [patch v4 12/18] sched: add power aware scheduling in fork/exec/wake Alex Shi
2013-01-24 3:06 ` [patch v4 13/18] sched: packing small tasks in wake/exec balancing Alex Shi
2013-01-24 3:06 ` [patch v4 14/18] sched: add power/performance balance allowed flag Alex Shi
2013-01-24 3:06 ` [patch v4 15/18] sched: pull all tasks from source group Alex Shi
2013-01-24 3:06 ` [patch v4 16/18] sched: don't care if the local group has capacity Alex Shi
2013-01-24 3:06 ` [patch v4 17/18] sched: power aware load balance, Alex Shi
2013-01-24 3:07 ` [patch v4 18/18] sched: lazy power balance Alex Shi
2013-01-24 9:44 ` [patch v4 0/18] sched: simplified fork, release load avg and power awareness scheduling Borislav Petkov
2013-01-24 15:07 ` Alex Shi
2013-01-27 2:41 ` Alex Shi
2013-01-27 4:36 ` Mike Galbraith
2013-01-27 10:35 ` Borislav Petkov
2013-01-27 13:25 ` Alex Shi
2013-01-27 15:51 ` Mike Galbraith
2013-01-28 5:17 ` Mike Galbraith
2013-01-28 5:51 ` Alex Shi [this message]
2013-01-28 6:15 ` Mike Galbraith
2013-01-28 6:42 ` Mike Galbraith
2013-01-28 7:20 ` Mike Galbraith
2013-01-29 1:17 ` Alex Shi
2013-01-28 9:55 ` Borislav Petkov
2013-01-28 10:44 ` Mike Galbraith
2013-01-28 11:29 ` Borislav Petkov
2013-01-28 11:32 ` Mike Galbraith
2013-01-28 11:40 ` Mike Galbraith
2013-01-28 15:22 ` Borislav Petkov
2013-01-28 15:55 ` Mike Galbraith
2013-01-29 1:38 ` Alex Shi
2013-01-29 1:32 ` Alex Shi
2013-01-29 1:36 ` Alex Shi
2013-01-28 15:47 ` Mike Galbraith
2013-01-29 1:45 ` Alex Shi
2013-01-29 4:03 ` Mike Galbraith
2013-01-29 2:27 ` Alex Shi
2013-01-27 10:40 ` Borislav Petkov
2013-01-27 14:03 ` Alex Shi
2013-01-28 5:19 ` Alex Shi
2013-01-28 6:49 ` Mike Galbraith
2013-01-28 7:17 ` Alex Shi
2013-01-28 7:33 ` Mike Galbraith
2013-01-29 6:02 ` Alex Shi
2013-01-28 1:28 ` Alex Shi
2013-02-04 1:35 ` Alex Shi
2013-02-04 11:09 ` Ingo Molnar
2013-02-05 2:26 ` Alex Shi
2013-02-06 5:08 ` Alex Shi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=510611D2.1020007@intel.com \
--to=alex.shi@intel.com \
--cc=akpm@linux-foundation.org \
--cc=arjan@linux.intel.com \
--cc=bp@alien8.de \
--cc=efault@gmx.de \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=namhyung@kernel.org \
--cc=peterz@infradead.org \
--cc=pjt@google.com \
--cc=preeti@linux.vnet.ibm.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=vincent.guittot@linaro.org \
--cc=viresh.kumar@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.