public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: J Sloan <jjs@pobox.com>
To: Robert Love <rml@tech9.net>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: heads-up: preempt kernel and tux NO-GO
Date: Tue, 27 Nov 2001 17:17:05 -0800	[thread overview]
Message-ID: <3C043B11.2FA17A19@pobox.com> (raw)

Hi -

I have been looking into the tux2 webserver -
Man, what a thing of beauty. A web benchmark
that sends the load on the web server to 150
when running apache results in a load average
of  maybe 2 when running tux, and much faster
results to boot - anyway, I digress....

I built 2.4.16+low-latency+preempt+tux2, and
started testing it. To my horror, the webserver
died - I checked the logs and found an oops -
(for your edification, I attach it below)

So, I figured, preempt and low latency don't
mix well - I'll just build a kernel with tux and
preempt.

To my horror, the new kernel without the
low latency patch oopsed immediately as
well, as soon as I started an apachebench
run from a remote testing box.

(for you edification, I include this oops also)

I removed the preempt patch and basically
compiled just 2.4.16+tux, and hammered on
it for several hours - rock solid.

So, there is an issue with tux and the preempt
patch - I've got big plans for tux atm, so for
now I will have to do without preempt -

Thanks & Regards,

jjs







             reply	other threads:[~2001-11-28  1:17 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-11-28  1:17 J Sloan [this message]
2001-11-28  2:12 ` heads-up: preempt kernel and tux NO-GO Oliver Xymoron
2001-11-28  2:23   ` J Sloan
2001-11-28  2:30   ` Andrew Morton
2001-11-28  4:27 ` Robert Love
2001-11-29  4:11 ` data point: tux and low-latency patches OK J Sloan
2001-11-29  1:18   ` interrupt ? McEnroe
2001-11-29 17:07     ` Robert Love
2001-11-29 21:03       ` Mike Fedyk
  -- strict thread matches above, loose matches on Subject: below --
2001-11-28  1:21 heads-up: preempt kernel and tux NO-GO J Sloan

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=3C043B11.2FA17A19@pobox.com \
    --to=jjs@pobox.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=rml@tech9.net \
    /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