Re: [announce] [patch] limiting IRQ load, irq-rewrite-2.4.11-B5

From: Alan Cox (
Date: Mon Oct 08 2001 - 10:12:53 EST

> I think (Ingo's?) analogy of an airbag was appropriate, if that's indeed
> how the code winds up functioning.

Very much so

"Driver killed because the air bag enable is off by default and only
mentioned on page 87 of the handbook in a footnote"

> Having a mechanism that prevents what would otherwise be a lockup is
> useful. NAPI is useful. Having both would be nice :)

NAPI is important - the irq disable tactic is a last resort. If the right
hardware is irq flood aware it should only ever trigger to save us from
irq routing errors (eg cardbus hangs)
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This archive was generated by hypermail 2b29 : Mon Oct 15 2001 - 21:00:18 EST