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DragonFly kernel List (threaded) for 2006-01
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weird interrupt load / exec behaviour


From: "Simon 'corecode' Schubert" <corecode@xxxxxxxxxxxx>
Date: Mon, 30 Jan 2006 15:38:45 +0100

hey,

with my new athlon64 3200+ / NForce4 I am seeing a totally weird interrupt load when compiling. Usually the load is at about 80% then and the box doesn't really compile much faster than my duron 1200 before.

I've narrowed it down to exec. If I write a program which does nothing but exec itself in a loop, I will get interrupt loads of > 90%. I'm not sure if this is just accounting or real interrupt processing. At the same time vmstat -i doesn't show more interrupts than usual.

It's really a pitty that it is so slow for compiling :/

I'll try a GENERIC kernel and a non-mcpu=athlon64 kernel later, but I doubt this helps.

Any clues? Where could I start investigating?

cheers
  simon

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