From: "Manfred Spraul" <manfred@colorfullife.com>
To: "Ingo Molnar" <mingo@elte.hu>
Cc: <linux-kernel@vger.kernel.org>, "jamal" <hadi@cyberus.ca>
Subject: Re: [patch] auto-limiting IRQ load take #2, irq-rewrite-2.4.11-F4
Date: Wed, 3 Oct 2001 18:23:20 +0200 [thread overview]
Message-ID: <001e01c14c27$bc542070$010411ac@local> (raw)
On Wed, 3 Oct 2001, Ingo Molnar wrote:
>
> the attached patch contains a cleaned up version of IRQ
> auto-mitigation.
>
What's the purpose of the patch?
Should it enable itself under load, or is it an emergency switch if a
broken driver (or broken hardware) causes an IRQ storm that makes the
computer unusable?
As an emergency switch it's a good idea.
But it should never enable itself unless the box is nearly dead, and it
can't replace NAPI and interrupt mitigation.
> (i'd like to stress the point again that the goal of this approach
> is *not* to be nice. This is an airbag mechanizm, it can and
> will hurt performance. But my box does not lock up
> anymore.)
>
Ok, then I like the patch.
--
Manfred
next reply other threads:[~2001-10-03 16:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-03 16:23 Manfred Spraul [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-10-02 20:34 [patch] auto-limiting IRQ load, IRQ-polling, irq-rewrite-2.4.11-D9 Ingo Molnar
2001-10-03 14:51 ` [patch] auto-limiting IRQ load take #2, irq-rewrite-2.4.11-F4 Ingo Molnar
2001-10-03 15:16 ` jamal
2001-10-03 16:51 ` Rik van Riel
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