Re: finish_task_switch high in profiles in 2.6.7

[Yusuf Goolamabbas]

> How many context switches do you get in vmstat?

Mentioned in a subsequent message

http://marc.theaimsgroup.com/?l=linux-kernel&m=108806991921498&w=2

> Most likely you just have far too many of them. readprofile will attribute
> most of the cost to finish_task_switch, because that one reenables the 
> interrupts (and the profiling only works with interrupts on)
> 
> Too many context switches are usually caused by user space.

Hmm, Is there a way to determine which syscall would be the culprit. I
guess this is where something like DTrace would be invaluable

http://www.sun.com/bigadmin/content/dtrace/

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