Messages in this thread | | | From | David Wragg <> | Subject | Re: [PATCH] procfs: export context switch counts in /proc/*/stat | Date | Wed, 20 Dec 2006 14:38:06 +0000 |
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Arjan van de Ven <arjan@infradead.org> writes: > if all you care is the number of context switches, you can use the > following system tap script as well: > > http://www.fenrus.org/cstop.stp
Thanks, something similar to that might well have solved my original problem.
(When I try the script, stap complains about the lack of the kernel debuginfo package, which of course doesn't exist for my self-built kernel. After hunting around on the web for 10 minutes, I'm still no closer to resolving this. But I look forward to playing with systemtap once I get past that problem.)
Nonetheless, while systemtap might provide an objection to adding per-task context switch counters to the kernel, it doesn't answer the question, since we do have these counters, why not expose them in the normal way?
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