From: Jonathan Lundell <linux@lundell-bros.com>
To: yodaiken@fsmlabs.com, "Richard B. Johnson" <root@chaos.analogic.com>
Cc: yodaiken@fsmlabs.com, Mark Hounschell <markh@compro.net>,
"Wessler, Siegfried" <Siegfried.Wessler@de.hbm.com>,
"'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Subject: Re: interrupt latency
Date: Wed, 28 Aug 2002 07:25:01 -0700 [thread overview]
Message-ID: <p05111a13b9928cf63a15@[10.2.2.25]> (raw)
In-Reply-To: <20020828074148.B23738@hq.fsmlabs.com>
At 7:41 am -0600 8/28/02, yodaiken@fsmlabs.com wrote:
>Average and worst case are different.
I can believe that. The explanation that jumps to mind is PCI bus
contention because of DMA, causing the inb to stall or to get
repeatedly retried. 13us seems a little extreme, but not completely
impossible.
--
/Jonathan Lundell.
next prev parent reply other threads:[~2002-08-28 14:21 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-27 9:58 Wessler, Siegfried
2002-08-27 14:11 ` Stephen Samuel
2002-08-27 17:16 ` Robert Schwebel
2002-08-27 21:44 ` Stephen Samuel
2002-08-27 17:41 ` Mark Hounschell
2002-08-27 18:01 ` Richard B. Johnson
2002-08-27 19:54 ` yodaiken
2002-08-27 20:44 ` Richard B. Johnson
2002-08-27 20:56 ` yodaiken
2002-08-27 22:47 ` Rogier Wolff
2002-08-28 12:18 ` Richard B. Johnson
2002-08-28 13:41 ` yodaiken
2002-08-28 14:25 ` Jonathan Lundell [this message]
2002-08-28 13:53 ` yodaiken
2002-08-28 15:02 ` Richard B. Johnson
2002-08-28 15:19 ` yodaiken
2002-08-28 15:31 ` Alan Cox
2002-08-28 15:37 ` Richard B. Johnson
2002-08-28 16:53 ` Randy.Dunlap
2002-08-28 12:42 ` Pavel Machek
2002-08-27 18:05 ` Dag Nygren
2002-10-30 23:50 Keith Adamson
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='p05111a13b9928cf63a15@[10.2.2.25]' \
--to=linux@lundell-bros.com \
--cc=Siegfried.Wessler@de.hbm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=markh@compro.net \
--cc=root@chaos.analogic.com \
--cc=yodaiken@fsmlabs.com \
/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
all inboxes | Powered by JetHome®