weird interrupt load / exec behaviour
Simon 'corecode' Schubert
corecode at fs.ei.tum.de
Mon Jan 30 06:45:37 PST 2006
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
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?
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