Re: i8259 and IO-APIC

From: Zwane Mwaikambo (zwane@linux.realnet.co.sz)
Date: Mon May 27 2002 - 10:59:54 EST

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On 27 May 2002, Terje Eggestad wrote:

> Do you got any numbers that state that it's processing overhead, and not
> HW latency that is the bulk of interrupt service time? Just curious,
> I've been looking and can't find this "perceived fact" backed up by
> facts anywhere.

I think Alan had the ISR and kernel IRQ service overhead in mind. In this
light, hardware interrupt latency is a drop in the ocean..

Cheers,
Zwane Mwaikambo

-- http://function.linuxpower.ca

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