From: Jamie Lokier <jamie@shareable.org>
To: George Anzinger <george@mvista.com>
Cc: Nick Piggin <piggin@cyberone.com.au>,
Guillaume Foliard <guifo@wanadoo.fr>,
linux-kernel@vger.kernel.org
Subject: Re: Scheduler degradation since 2.5.66
Date: Tue, 16 Dec 2003 00:52:51 +0000 [thread overview]
Message-ID: <20031216005251.GB3364@mail.shareable.org> (raw)
In-Reply-To: <3FDE5449.60507@mvista.com>
George Anzinger wrote:
> Try running the test with a requested sleep time of something less than
> 0.999849 ms. All this is for the x86 which is using this time to do the
> best it can with the PIT which can only get this close to 1 ms ticks. You
> can even vary this number to see exactly where the round up actually
> happens. Ah, life in the nano world :)
Would it be better to program the PIT for lowest frequency that's >= 1.0ms.
-- Jamie
next prev parent reply other threads:[~2003-12-16 0:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-14 19:48 Scheduler degradation since 2.5.66 Guillaume Foliard
2003-12-15 2:45 ` Nick Piggin
2003-12-15 4:18 ` Nick Piggin
2003-12-16 0:39 ` George Anzinger
2003-12-16 0:52 ` Jamie Lokier [this message]
2003-12-16 7:45 ` George Anzinger
2004-01-15 0:43 ` Bill Davidsen
2004-01-15 3:36 ` George Anzinger
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=20031216005251.GB3364@mail.shareable.org \
--to=jamie@shareable.org \
--cc=george@mvista.com \
--cc=guifo@wanadoo.fr \
--cc=linux-kernel@vger.kernel.org \
--cc=piggin@cyberone.com.au \
/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