Is anyone using the schedgraph.d script?

[Adrian Chadd]

Hi,

I'm having problems with Ryan's schedgraph.d script
(people.freebsd.org/~rstone/dtrace/)

It runs fine, but if a CPU core is 100% busy, I get zero scheduler
events logged from it. Said core is doing around 30,000 syscalls a
second, around 250,000 context switches and 125,000 interrupt sa
second - but whilst it's doing this, I get zero events from dtrace for
said CPU.

Has anyone hit this kind of situation before?



-a