From: Ed Sweetman <safemode@speakeasy.net>
To: Andre Hedrick <andre@linux-ide.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: cerberus errors on 2.4.19 (ide dma related)
Date: 18 Aug 2002 14:31:30 -0400 [thread overview]
Message-ID: <1029695490.1357.8.camel@psuedomode> (raw)
In-Reply-To: <Pine.LNX.4.10.10208180215370.23171-100000@master.linux-ide.org>
Preempt doesn't seem to be the culprit. Reran the test without using
preempt and I got MEMORY errors within 22 seconds at udma2. So preempt
is not the problem here.
On Sun, 2002-08-18 at 05:19, Andre Hedrick wrote:
>
> 2.4.19-preempt
>
> All bets are off because who knows what preempt is doing to the state
> machines and in PIO you are dead.
>
> You can not delay transaction of data between interrupts w/o having the
> transport help out. But the preempt don't get it.
>
> If you push your request size down to 8k or to a page you preempt problems
> will go away, only because granularity of requests. And the price is
> performance goes in the tank. But this is preempt so who cares.
next prev parent reply other threads:[~2002-08-18 18:27 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-18 6:44 cerberus errors on 2.4.19 (ide dma related) Ed Sweetman
2002-08-18 7:15 ` Ed Sweetman
2002-08-18 9:19 ` Andre Hedrick
2002-08-18 18:11 ` Ed Sweetman
2002-08-18 18:31 ` Ed Sweetman [this message]
2002-08-18 7:26 ` Ed Sweetman
2002-08-18 9:00 ` Barry K. Nathan
2002-08-18 9:13 ` Ed Sweetman
2002-08-18 17:50 ` Jonathan Lundell
2002-08-18 18:04 ` Ed Sweetman
2002-08-18 9:10 ` Alexander Viro
2002-08-18 9:16 ` Ed Sweetman
2002-08-18 18:10 ` Ed Sweetman
2002-08-18 18:20 ` Sean Neakums
2002-08-18 18:29 ` Ed Sweetman
2002-08-18 18:36 ` Sean Neakums
2002-08-18 21:53 ` Barry K. Nathan
2002-08-18 22:26 ` devfs Ed Sweetman
2002-08-18 22:47 ` devfs Sean Neakums
2002-08-18 23:03 ` devfs Alexander Viro
2002-08-18 23:15 ` devfs Ed Sweetman
2002-08-21 4:49 ` devfs Richard Gooch
2002-08-21 5:03 ` devfs Ed Sweetman
2002-08-19 1:06 ` devfs Olivier Galibert
2002-08-19 2:01 ` devfs Greg KH
2002-08-18 23:18 ` devfs Barry K. Nathan
2002-08-18 22:41 ` cerberus errors on 2.4.19 (ide dma related) Andrew Rodland
2002-08-18 22:55 ` Ed Sweetman
2002-08-19 21:46 ` Ed Sweetman
2002-08-18 19:53 ` Ed Sweetman
2002-08-18 20:07 ` Andre Hedrick
2002-08-18 20:29 ` Ed Sweetman
2002-08-23 0:03 ` Samuel Flory
2002-08-19 0:06 ` Denis Vlasenko
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=1029695490.1357.8.camel@psuedomode \
--to=safemode@speakeasy.net \
--cc=andre@linux-ide.org \
--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