From: Alex Bligh - linux-kernel <linux-kernel@alex.org.uk>
To: Simon Kirby <sim@netnation.com>,
Alex Bligh - linux-kernel <linux-kernel@alex.org.uk>
Cc: mingo@elte.hu, linux-kernel@vger.kernel.org,
Alex Bligh - linux-kernel <linux-kernel@alex.org.uk>
Subject: Re: [announce] [patch] limiting IRQ load, irq-rewrite-2.4.11-B5
Date: Fri, 05 Oct 2001 00:25:41 +0100 [thread overview]
Message-ID: <309761448.1002241541@[195.224.237.69]> (raw)
In-Reply-To: <20011004150119.B2373@netnation.com>
In-Reply-To: <20011004150119.B2373@netnation.com>
--On Thursday, 04 October, 2001 3:01 PM -0700 Simon Kirby
<sim@netnation.com> wrote:
> Ingo is not limiting interrupts to make it drop packets and forget things
> just so that userspace can proceed. Instead, he is postponing servicing
> of the interrupts so that the card can batch up more packets and the
> interrupt will retrieve more at once rather than continually leaving and
> entering the interrupt to just pick up a few packets. Without this, the
> interrupt will starve everything else, and nothing will get done.
Ah OK. in this case already looking at interupt coalescing at firmware
level which mitigates this 'earlier on', however even this
stratgy fails at higher pps levels => i.e. in these circumstances
the card buffer is already full-ish, as the interrupt has already been
postponed, and postponing it further can only cause dropped packets
through buffer overrun.
--
Alex Bligh
next prev parent reply other threads:[~2001-10-04 23:25 UTC|newest]
Thread overview: 151+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-02 0:41 [announce] [patch] limiting IRQ load, irq-rewrite-2.4.11-B5 jamal
2001-10-02 1:04 ` Benjamin LaHaise
2001-10-02 1:54 ` jamal
2001-10-02 5:13 ` Benjamin LaHaise
2001-10-02 5:55 ` Ben Greear
2001-10-03 9:22 ` Ingo Molnar
2001-10-03 14:06 ` David Brownell
2001-10-02 12:10 ` jamal
2001-10-02 22:00 ` jamal
2001-10-03 8:34 ` Ingo Molnar
2001-10-03 9:29 ` Helge Hafting
2001-10-03 12:49 ` jamal
2001-10-03 14:51 ` Ingo Molnar
2001-10-03 15:14 ` jamal
2001-10-03 17:28 ` Ingo Molnar
2001-10-04 0:53 ` jamal
2001-10-04 6:28 ` Ingo Molnar
2001-10-04 11:34 ` jamal
2001-10-04 17:40 ` Andreas Dilger
2001-10-04 18:33 ` jamal
2001-10-04 6:50 ` Ben Greear
2001-10-04 6:52 ` Ingo Molnar
2001-10-04 11:50 ` jamal
2001-10-04 6:55 ` Jeff Garzik
2001-10-04 6:56 ` Ingo Molnar
2001-10-04 21:28 ` Alex Bligh - linux-kernel
2001-10-04 21:49 ` Benjamin LaHaise
2001-10-04 23:20 ` Alex Bligh - linux-kernel
2001-10-04 23:26 ` Benjamin LaHaise
2001-10-04 23:47 ` Robert Love
2001-10-04 23:51 ` Linus Torvalds
2001-10-05 0:00 ` Ben Greear
2001-10-05 0:18 ` Davide Libenzi
2001-10-05 2:01 ` jamal
2001-10-04 22:01 ` Simon Kirby
2001-10-04 23:25 ` Alex Bligh - linux-kernel [this message]
2001-10-04 23:34 ` Simon Kirby
2001-10-04 22:10 ` Alan Cox
2001-10-04 23:28 ` Alex Bligh - linux-kernel
2001-10-05 15:22 ` Robert Olsson
2001-10-03 9:38 ` Ingo Molnar
2001-10-03 13:03 ` jamal
2001-10-03 13:25 ` jamal
2001-10-03 15:28 ` Ingo Molnar
2001-10-03 15:56 ` jamal
2001-10-03 16:51 ` Ingo Molnar
2001-10-04 0:46 ` jamal
2001-10-08 0:31 ` Andrea Arcangeli
2001-10-08 4:58 ` Bernd Eckenfels
2001-10-08 15:00 ` Alan Cox
2001-10-08 15:03 ` Jeff Garzik
2001-10-08 15:12 ` Alan Cox
2001-10-08 15:09 ` jamal
2001-10-08 15:22 ` Alan Cox
2001-10-08 15:20 ` jamal
2001-10-08 15:35 ` Alan Cox
2001-10-08 15:57 ` jamal
2001-10-08 16:11 ` Alan Cox
2001-10-08 16:11 ` jamal
2001-10-10 16:26 ` Pavel Machek
2001-10-10 16:25 ` Pavel Machek
2001-10-08 15:24 ` Andrea Arcangeli
2001-10-08 15:35 ` Alan Cox
2001-10-08 15:19 ` Andrea Arcangeli
2001-10-08 15:10 ` bill davidsen
2001-10-03 21:08 ` Robert Olsson
2001-10-03 22:22 ` Andreas Dilger
2001-10-04 17:32 ` Davide Libenzi
2001-10-05 14:52 ` Robert Olsson
2001-10-05 18:48 ` Andreas Dilger
2001-10-05 19:07 ` Davide Libenzi
2001-10-05 19:17 ` kuznet
2001-10-08 13:58 ` jamal
2001-10-08 17:42 ` Robert Olsson
2001-10-08 17:39 ` jamal
2001-10-07 6:11 ` Robert Olsson
2001-10-03 16:53 ` kuznet
2001-10-03 17:06 ` Ingo Molnar
2001-10-04 0:44 ` jamal
2001-10-04 6:35 ` Ingo Molnar
2001-10-04 11:41 ` jamal
2001-10-05 16:42 ` kuznet
2001-10-04 13:05 ` Robert Olsson
2001-10-03 19:03 ` Benjamin LaHaise
2001-10-04 1:10 ` jamal
2001-10-04 1:30 ` Benjamin LaHaise
2001-10-03 22:31 ` Rob Landley
2001-10-04 1:39 ` jamal
2001-10-03 15:42 ` Ben Greear
2001-10-03 15:58 ` jamal
2001-10-03 16:09 ` Ben Greear
2001-10-03 16:14 ` Ingo Molnar
2001-10-03 16:20 ` Jeff Garzik
2001-10-03 16:33 ` Linus Torvalds
2001-10-03 17:25 ` Ingo Molnar
2001-10-03 18:11 ` Linus Torvalds
2001-10-03 20:41 ` Jeremy Hansen
2001-10-03 20:02 ` Simon Kirby
2001-10-04 1:04 ` jamal
2001-10-04 6:47 ` Ben Greear
2001-10-04 7:41 ` Henning P. Schmiedehausen
2001-10-04 16:09 ` Ben Greear
2001-10-04 17:32 ` Henning P. Schmiedehausen
2001-10-04 18:03 ` Ben Greear
2001-10-04 18:30 ` Christopher E. Brown
2001-10-04 11:47 ` jamal
2001-10-04 15:56 ` Ben Greear
2001-10-04 18:23 ` jamal
2001-10-04 6:50 ` Ingo Molnar
2001-10-04 11:49 ` jamal
2001-10-04 8:45 ` Simon Kirby
2001-10-04 11:54 ` jamal
2001-10-04 15:03 ` Tim Hockin
2001-10-04 18:55 ` Ion Badulescu
2001-10-04 19:00 ` jamal
2001-10-04 21:16 ` Ion Badulescu
2001-10-04 4:12 ` bill davidsen
2001-10-04 18:16 ` Alan Cox
2001-10-03 13:38 ` Robert Olsson
2001-10-04 21:22 ` Alex Bligh - linux-kernel
2001-10-05 14:32 ` Robert Olsson
2001-10-03 8:38 ` Ingo Molnar
2001-10-04 3:50 ` bill davidsen
2001-10-02 17:03 ` Robert Olsson
2001-10-02 17:37 ` jamal
2001-10-02 19:46 ` Andreas Dilger
-- strict thread matches above, loose matches on Subject: below --
2001-10-08 14:45 jamal
2001-10-09 0:36 ` Scott Laird
2001-10-09 3:17 ` jamal
2001-10-09 4:04 ` Werner Almesberger
2001-10-04 8:25 Magnus Redin
2001-10-04 11:39 ` Trever L. Adams
[not found] <200110031811.f93IBoN10026@penguin.transmeta.com>
2001-10-03 18:23 ` Ingo Molnar
2001-10-04 9:19 ` BALBIR SINGH
2001-10-04 9:22 ` Ingo Molnar
2001-10-04 9:49 ` BALBIR SINGH
2001-10-04 10:25 ` Ingo Molnar
2001-10-07 20:37 ` Andrea Arcangeli
2001-10-03 14:15 Manfred Spraul
2001-10-03 15:09 ` jamal
2001-10-03 18:37 ` Davide Libenzi
2001-10-01 22:16 Ingo Molnar
2001-10-01 22:26 ` Tim Hockin
2001-10-01 22:50 ` Ingo Molnar
2001-10-01 22:36 ` Andreas Dilger
2001-10-01 22:50 ` Ben Greear
2001-10-02 14:30 ` Alan Cox
2001-10-02 20:51 ` Ingo Molnar
2001-10-01 23:03 ` Linus Torvalds
2001-10-02 6:50 ` Marcus Sundberg
2001-10-03 8:47 ` Ingo Molnar
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