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 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.