From: Alex Shi <alex.shi@linaro.org>
To: mingo@redhat.com, peterz@infradead.org, morten.rasmussen@arm.com
Cc: vincent.guittot@linaro.org, daniel.lezcano@linaro.org,
fweisbec@gmail.com, linux@arm.linux.org.uk, tony.luck@intel.com,
fenghua.yu@intel.com, james.hogan@imgtec.com,
alex.shi@linaro.org, jason.low2@hp.com, viresh.kumar@linaro.org,
hanjun.guo@linaro.org, linux-kernel@vger.kernel.org,
tglx@linutronix.de, akpm@linux-foundation.org,
arjan@linux.intel.com, pjt@google.com, fengguang.wu@intel.com,
linaro-kernel@lists.linaro.org, wangyun@linux.vnet.ibm.com
Subject: Re: [PATCH v2 0/11] remove cpu_load in rq
Date: Tue, 18 Feb 2014 10:37:08 +0800 [thread overview]
Message-ID: <5302C754.8000109@linaro.org> (raw)
In-Reply-To: <1392602117-20773-1-git-send-email-alex.shi@linaro.org>
On 02/17/2014 09:55 AM, Alex Shi wrote:
> The cpu_load decays on time according past cpu load of rq. The sched_avg also decays tasks' load on time. Now we has 2 kind decay for cpu_load. That is a kind of redundancy. And increase the system load by decay calculation. This patch try to remove the cpu_load decay.
>
> There are 5 load_idx used for cpu_load in sched_domain. busy_idx and idle_idx are not zero usually, but newidle_idx, wake_idx and forkexec_idx are all zero on every arch. A shortcut to remove cpu_Load decay in the first patch. just one line patch for this change.
>
> V2,
> 1, This version do some tuning on load bias of target load, to maximum match current code logical.
> 2, Got further to remove the cpu_load in rq.
> 3, Revert the patch 'Limit sd->*_idx range on sysctl' since no needs
Any comments for this? :)
>
> Any testing/comments are appreciated.
>
> This patch rebase on latest tip/master.
> The git tree for this patchset at:
> git@github.com:alexshi/power-scheduling.git noload
>
> Thanks
> Alex
>
--
Thanks
Alex
next prev parent reply other threads:[~2014-02-18 2:37 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-17 1:55 [PATCH v2 0/11] remove cpu_load in rq Alex Shi
2014-02-17 1:55 ` [PATCH v2 01/11] sched: shortcut to remove load_idx Alex Shi
2014-02-17 1:55 ` [PATCH v2 02/11] sched: remove rq->cpu_load[load_idx] array Alex Shi
2014-02-17 1:55 ` [PATCH v2 03/11] sched: clean up cpu_load update Alex Shi
2014-02-17 1:55 ` [PATCH v2 04/11] sched: unify imbalance bias for target group Alex Shi
2014-02-17 1:55 ` [PATCH v2 05/11] sched: rewrite update_cpu_load_nohz Alex Shi
2014-02-17 1:55 ` [PATCH v2 06/11] sched: clean up source_load/target_load Alex Shi
2014-02-17 1:55 ` [PATCH v2 07/11] sched: clean up weighted_cpuload Alex Shi
2014-02-17 1:55 ` [PATCH v2 08/11] sched: remove weighted_load() Alex Shi
2014-02-17 1:55 ` [PATCH v2 09/11] sched: remove rq->cpu_load and rq->nr_load_updates Alex Shi
2014-02-17 1:55 ` [PATCH v2 10/11] sched: rename update_*_cpu_load Alex Shi
2014-02-17 1:55 ` [PATCH v2 11/11] sched: clean up task_hot function Alex Shi
2014-02-18 2:37 ` Alex Shi [this message]
2014-02-18 4:52 ` [PATCH v2 0/11] remove cpu_load in rq Michael wang
2014-02-18 6:03 ` Alex Shi
2014-02-18 6:17 ` Michael wang
[not found] ` <20140218120522.GG19029@e103034-lin>
2014-02-18 12:28 ` Vincent Guittot
2014-02-19 10:23 ` 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=5302C754.8000109@linaro.org \
--to=alex.shi@linaro.org \
--cc=akpm@linux-foundation.org \
--cc=arjan@linux.intel.com \
--cc=daniel.lezcano@linaro.org \
--cc=fengguang.wu@intel.com \
--cc=fenghua.yu@intel.com \
--cc=fweisbec@gmail.com \
--cc=hanjun.guo@linaro.org \
--cc=james.hogan@imgtec.com \
--cc=jason.low2@hp.com \
--cc=linaro-kernel@lists.linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@arm.linux.org.uk \
--cc=mingo@redhat.com \
--cc=morten.rasmussen@arm.com \
--cc=peterz@infradead.org \
--cc=pjt@google.com \
--cc=tglx@linutronix.de \
--cc=tony.luck@intel.com \
--cc=vincent.guittot@linaro.org \
--cc=viresh.kumar@linaro.org \
--cc=wangyun@linux.vnet.ibm.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox