From: Waiman Long <Waiman.Long@hp.com>
To: Ingo Molnar <mingo@redhat.com>, Peter Zijlstra <peterz@infradead.org>
Cc: Waiman Long <Waiman.Long@hp.com>,
linux-kernel@vger.kernel.org,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Andrew Morton <akpm@linux-foundation.org>,
Serge Hallyn <serge.hallyn@canonical.com>,
"Chandramouleeswaran, Aswin" <aswin@hp.com>,
"Norton, Scott J" <scott.norton@hp.com>
Subject: [PATCH 0/2] sched: Reduce contention on tg's load_avg & runnable_avg
Date: Mon, 23 Sep 2013 15:39:21 -0400 [thread overview]
Message-ID: <1379965163-18440-1-git-send-email-Waiman.Long@hp.com> (raw)
These 2 patches try to reduce contention on the load_avg and
runnable_avg values of the task_group structure in large NUMA
machine by:
patch 1: Move them into their own cacheline & reduce actual read/write
to them.
patch 2: Reduce the frequecy of doing the average computation.
Waiman Long (2):
sched: reduce contention on tg's load_avg & runnable_avg
sched, numa: reduce load/runnable_avg computation frequency
init/Kconfig | 13 ++++++++
kernel/sched/core.c | 1 +
kernel/sched/fair.c | 84 +++++++++++++++++++++++++++++++++++++++++++++-----
kernel/sched/sched.h | 29 ++++++++++++++++-
4 files changed, 117 insertions(+), 10 deletions(-)
next reply other threads:[~2013-09-23 19:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-23 19:39 Waiman Long [this message]
2013-09-23 19:39 ` [PATCH 1/2] sched: reduce " Waiman Long
2013-09-23 19:39 ` [PATCH 2/2] sched, numa: reduce load/runnable_avg computation frequency Waiman Long
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=1379965163-18440-1-git-send-email-Waiman.Long@hp.com \
--to=waiman.long@hp.com \
--cc=akpm@linux-foundation.org \
--cc=aswin@hp.com \
--cc=ebiederm@xmission.com \
--cc=fweisbec@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=paulmck@linux.vnet.ibm.com \
--cc=peterz@infradead.org \
--cc=scott.norton@hp.com \
--cc=serge.hallyn@canonical.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
all inboxes | Powered by JetHome®