From: Robin Holt <holt@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: Interval timer
Date: Wed, 05 Mar 2008 21:19:16 +0000 [thread overview]
Message-ID: <20080305211916.GC2013@sgi.com> (raw)
In-Reply-To: <20080305094128.GA30069@cse.unsw.EDU.AU>
On Wed, Mar 05, 2008 at 09:22:32PM +1100, Matthew Chapman wrote:
> On Wed, Mar 05, 2008 at 03:53:52AM -0600, Robin Holt wrote:
> > On Wed, Mar 05, 2008 at 08:41:28PM +1100, Matthew Chapman wrote:
> > > Is there any interval timer on HP zx1 platforms, other than the
> > > CPU-based ITC/ITM?
> >
> > How fine grained do you need? How much jitter are you willing to
> > tolerate? How much multiplexing are we talking about?
>
> I don't need any strong guarantees other than the fact that an
> interrupt arrives 'sometime in the next millisecond' after
> programming the timer - ideally the timeouts I want are of the
> order of 10 microseconds (+/- an order of magnitude), but large
> jitter is fine.
How about setting HZ to 1024 and using regular add_timer() timers?
Thanks,
Robin
next prev parent reply other threads:[~2008-03-05 21:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-05 9:41 Interval timer Matthew Chapman
2008-03-05 9:53 ` Robin Holt
2008-03-05 10:22 ` Matthew Chapman
2008-03-05 21:19 ` Robin Holt [this message]
2008-03-05 22:36 ` Matthew Chapman
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=20080305211916.GC2013@sgi.com \
--to=holt@sgi.com \
--cc=linux-ia64@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