From: Alex Shi <alex.shi@intel.com>
To: Paul Turner <pjt@google.com>
Cc: Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Borislav Petkov <bp@alien8.de>,
Namhyung Kim <namhyung@kernel.org>,
Mike Galbraith <efault@gmx.de>,
Morten Rasmussen <morten.rasmussen@arm.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Preeti U Murthy <preeti@linux.vnet.ibm.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
LKML <linux-kernel@vger.kernel.org>, Mel Gorman <mgorman@suse.de>,
Rik van Riel <riel@redhat.com>,
Michael Wang <wangyun@linux.vnet.ibm.com>
Subject: Re: [patch 0/8]: use runnable load avg in balance
Date: Tue, 14 May 2013 22:35:36 +0800 [thread overview]
Message-ID: <51924BB8.3040907@intel.com> (raw)
In-Reply-To: <CAPM31RLwbrfGT8UUajmuUYVu6VmtQwr6fjAc8MJqvAWE2N_F8Q@mail.gmail.com>
On 05/14/2013 05:34 PM, Paul Turner wrote:
>> >
>> > We also tried to include blocked load avg in balance. but find many benchmark
>> > performance dropping. Guess the too bigger cpu load drive task to be waken
>> > on remote CPU, and cause wrong decision in periodic balance.
> Fundamentally, I think we should be exploring this space.
I thought something of this. but can not figure out a direction or stand
by some theories.
>
> While it's perhaps not surprising that it's not a drop-in, since the
> current code was tuned always considering the instaneous balance, it
> seems the likely path to increased balance stability.
>
> Although, if the code is yielding substantive benefits in its current
> form we should consider merging it in the interim.
Sorry, I can not follow you here.
>
--
Thanks
Alex
next prev parent reply other threads:[~2013-05-14 14:35 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-10 15:17 [patch 0/8]: use runnable load avg in balance Alex Shi
2013-05-10 15:17 ` [patch v6 1/8] Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Alex Shi
2013-05-10 15:17 ` [patch v6 2/8] sched: move few runnable tg variables into CONFIG_SMP Alex Shi
2013-05-10 15:17 ` [patch v6 3/8] sched: set initial value of runnable avg for new forked task Alex Shi
2013-05-16 6:28 ` Alex Shi
2013-05-10 15:17 ` [patch v6 4/8] sched: fix slept time double counting in enqueue entity Alex Shi
2013-05-10 15:17 ` [patch v6 5/8] sched: update cpu load after task_tick Alex Shi
2013-05-10 15:17 ` [patch v6 6/8] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task Alex Shi
2013-05-13 14:06 ` Peter Zijlstra
2013-05-14 0:51 ` Alex Shi
2013-05-14 7:27 ` Alex Shi
2013-05-16 5:49 ` Michael Wang
2013-05-16 6:58 ` Alex Shi
2013-05-10 15:17 ` [patch v6 7/8] sched: consider runnable load average in move_tasks Alex Shi
2013-05-10 15:17 ` [patch v6 8/8] sched: remove blocked_load_avg in tg Alex Shi
2013-05-14 8:31 ` Peter Zijlstra
2013-05-14 11:35 ` Alex Shi
2013-05-16 9:23 ` Peter Zijlstra
2013-05-23 7:32 ` Changlong Xie
2013-05-23 8:19 ` Alex Shi
2013-05-28 13:36 ` Alex Shi
2013-05-14 9:05 ` Paul Turner
2013-05-14 11:37 ` Alex Shi
2013-05-29 17:00 ` Jason Low
2013-05-30 0:44 ` Alex Shi
2013-05-14 8:07 ` [patch 0/8]: use runnable load avg in balance Alex Shi
2013-05-14 9:34 ` Paul Turner
2013-05-14 14:35 ` Alex Shi [this message]
2013-05-16 7:29 ` Michael Wang
2013-05-16 7:35 ` Alex Shi
2013-05-28 13:31 ` Alex Shi
2013-05-29 13:28 ` 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=51924BB8.3040907@intel.com \
--to=alex.shi@intel.com \
--cc=akpm@linux-foundation.org \
--cc=bp@alien8.de \
--cc=efault@gmx.de \
--cc=linux-kernel@vger.kernel.org \
--cc=mgorman@suse.de \
--cc=mingo@redhat.com \
--cc=morten.rasmussen@arm.com \
--cc=namhyung@kernel.org \
--cc=peterz@infradead.org \
--cc=pjt@google.com \
--cc=preeti@linux.vnet.ibm.com \
--cc=riel@redhat.com \
--cc=tglx@linutronix.de \
--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.