From: Mike Galbraith <efault@gmx.de>
To: Uwaysi Bin Kareem <uwaysi.bin.kareem@paradoxuncreated.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Scheduler queues for less os-jitter?
Date: Sun, 04 Nov 2012 05:41:48 -0700 [thread overview]
Message-ID: <1352032908.8944.34.camel@maggy.simpson.net> (raw)
In-Reply-To: <op.wm8r8fjw6426ze@localhost.localdomain>
On Sun, 2012-11-04 at 10:20 +0100, Uwaysi Bin Kareem wrote:
> Ok, anyway realtime processes did not work quite as expected.
> ("overloaded" machine, even though cpu-time is only 10%). So I guess I
> have to enable cgroups and live with the overhead then.
>
> If I set cpu-limits there, does that involve an absolute value, or is it
> normalized, so that even if I do 0.001% cpu for processes, they get all
> cpu, when there is nothing running?
See Documentation/cgroups. Between cgroups, cpusets, scheduler classes
and priorities, you have heaping truckloads of control over what runs
where and when. The missing element in your low jitter quest is a
desktop and applications that were written for realtime performance.
-Mike
prev parent reply other threads:[~2012-11-04 12:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-10 18:13 Uwaysi Bin Kareem
2012-10-11 2:46 ` Mike Galbraith
[not found] ` <op.wm75y11n6426ze@localhost.localdomain>
2012-11-04 1:20 ` Fwd: " Uwaysi Bin Kareem
2012-11-04 9:20 ` Uwaysi Bin Kareem
2012-11-04 12:41 ` Mike Galbraith [this message]
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=1352032908.8944.34.camel@maggy.simpson.net \
--to=efault@gmx.de \
--cc=linux-kernel@vger.kernel.org \
--cc=uwaysi.bin.kareem@paradoxuncreated.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®