From: Arjan van de Ven <arjan@infradead.org>
To: Daniel J Blueman <daniel.blueman@gmail.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: tickless and HZ=1000 throughput advantage?
Date: Sat, 19 Sep 2009 16:55:01 +0200 [thread overview]
Message-ID: <20090919165501.65d77294@infradead.org> (raw)
In-Reply-To: <6278d2220909190747n62f7036dj2e5231fcdc4730fb@mail.gmail.com>
On Sat, 19 Sep 2009 15:47:24 +0100
Daniel J Blueman <daniel.blueman@gmail.com> wrote:
> On tickless kernels, is the general consensus that for non-embedded
> systems, selecting HZ=1000 gives slightly more throughput in
> particular situations than HZ=100 or 250, due to finer timer
> intervals/granularity?
it's not about throughput. It's about latency for some things....
although now that select/poll and co use hrtimers it's not as critical
anymore.
the HZ timers aren't used much for anything time-critical nowadays.
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2009-09-19 14:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-19 14:47 tickless and HZ=1000 throughput advantage? Daniel J Blueman
2009-09-19 14:55 ` Arjan van de Ven [this message]
2009-09-19 17:50 ` Daniel J Blueman
2009-09-19 23:12 ` Ben Nizette
2009-09-20 7:34 ` Tim Blechmann
2009-09-20 7:40 ` Arjan van de Ven
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=20090919165501.65d77294@infradead.org \
--to=arjan@infradead.org \
--cc=daniel.blueman@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/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