weird interrupt load / exec behaviour
dillon at apollo.backplane.com
Mon Jan 30 08:29:11 PST 2006
:with my new athlon64 3200+ / NForce4 I am seeing a totally weird=20
:interrupt load when compiling. Usually the load is at about 80% then=20
:and the box doesn't really compile much faster than my duron 1200=20
:I've narrowed it down to exec. If I write a program which does nothing=20=
:but exec itself in a loop, I will get interrupt loads of > 90%. I'm=20
:not sure if this is just accounting or real interrupt processing. At=20
: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=3Dathlon64 kernel later, but I=20=
:doubt this helps.
:Any clues? Where could I start investigating?
Are you running a completely current world? I tried the same
execl("./x", "x", NULL);
And all I got was system + user time.
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