From: "Gregory Haskins" <ghaskins@novell.com>
To: "Paul Jackson" <pj@sgi.com>
Cc: <a.p.zijlstra@chello.nl>, <mingo@elte.hu>,
<dmitry.adamushko@gmail.com>, <rostedt@goodmis.org>,
<menage@google.com>, <rientjes@google.com>, <tong.n.li@intel.com>,
<tglx@linutronix.de>, <akpm@linux-foundation.org>,
<dhaval@linux.vnet.ibm.com>, <vatsa@linux.vnet.ibm.com>,
<sgrubb@redhat.com>, <linux-kernel@vger.kernel.org>,
<ebiederm@xmission.com>, <nickpiggin@yahoo.com.au>
Subject: Re: scheduler scalability - cgroups, cpusets and load-balancing
Date: Tue, 29 Jan 2008 14:07:58 -0700 [thread overview]
Message-ID: <479F4F5E.BA47.005A.0@novell.com> (raw)
In-Reply-To: <20080129150234.b57ce988.pj@sgi.com>
>>> On Tue, Jan 29, 2008 at 4:02 PM, in message
<20080129150234.b57ce988.pj@sgi.com>, Paul Jackson <pj@sgi.com> wrote:
> Gregory wrote:
>> > ... (1) turning off
>> > sched_load_balance in any overlapping cpusets, including all
>> > encompassing parent cpusets, (2) leaving sched_load_balance on in the
>> > RT cpuset itself, and ...
>>
>> Technically you only need (2). I run my 4-8 core development systems
>> in the single default global cpuset, normally.
>
> Well, if you're running in the default cpuset, then you automatically get
> (1),
> because sched_load_balance is turned off in all overlapping cpusets (there
> aren't any overlapping cpusets!)
>
> So, yes, you -do- need both (1) and (2). In your normal system, you
> just happen to get (1) effortlessly.
Ah. Well see, I am just showing my ignorance of this area of the cpuset code then. I stand corrected, and sorry for the noise. :)
-Greg
next prev parent reply other threads:[~2008-01-29 21:14 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-29 9:53 scheduler scalability - cgroups, cpusets and load-balancing Peter Zijlstra
2008-01-29 10:01 ` Paul Jackson
2008-01-29 10:50 ` Peter Zijlstra
2008-01-29 11:13 ` Paul Jackson
2008-01-29 11:31 ` Peter Zijlstra
2008-01-29 11:53 ` Paul Jackson
2008-01-29 12:07 ` Peter Zijlstra
2008-01-29 12:36 ` Paul Jackson
2008-01-29 12:03 ` Paul Jackson
2008-01-29 12:30 ` Peter Zijlstra
2008-01-29 12:52 ` Paul Jackson
2008-01-29 13:38 ` Peter Zijlstra
2008-01-29 10:57 ` Peter Zijlstra
2008-01-29 11:30 ` Paul Jackson
2008-01-29 11:34 ` Paul Jackson
2008-01-29 11:50 ` Peter Zijlstra
2008-01-29 12:12 ` Paul Jackson
2008-01-29 15:57 ` Gregory Haskins
2008-01-29 16:33 ` Paul Jackson
2008-01-29 15:50 ` Gregory Haskins
2008-01-29 16:51 ` Paul Jackson
2008-01-29 17:21 ` Gregory Haskins
2008-01-29 19:04 ` Paul Jackson
2008-01-29 20:36 ` Gregory Haskins
2008-01-29 21:02 ` Paul Jackson
2008-01-29 21:07 ` Gregory Haskins [this message]
2008-01-29 15:36 ` Gregory Haskins
2008-01-29 16:28 ` Paul Jackson
2008-01-29 16:42 ` Gregory Haskins
2008-01-29 19:37 ` Paul Jackson
2008-01-29 20:28 ` Gregory Haskins
2008-01-29 20:56 ` Paul Jackson
2008-01-29 21:02 ` Gregory Haskins
2008-01-29 22:23 ` Steven Rostedt
2008-01-29 12:32 ` Srivatsa Vaddagiri
2008-01-29 12:21 ` Paul Jackson
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=479F4F5E.BA47.005A.0@novell.com \
--to=ghaskins@novell.com \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=dhaval@linux.vnet.ibm.com \
--cc=dmitry.adamushko@gmail.com \
--cc=ebiederm@xmission.com \
--cc=linux-kernel@vger.kernel.org \
--cc=menage@google.com \
--cc=mingo@elte.hu \
--cc=nickpiggin@yahoo.com.au \
--cc=pj@sgi.com \
--cc=rientjes@google.com \
--cc=rostedt@goodmis.org \
--cc=sgrubb@redhat.com \
--cc=tglx@linutronix.de \
--cc=tong.n.li@intel.com \
--cc=vatsa@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.