Messages in this thread | | | Subject | Re: [PATCH] Enhance perf to collect KVM guest os statistics from host side | From | (Frank Ch. Eigler) | Date | Tue, 23 Mar 2010 10:46:00 -0400 |
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Soeren Sandmann <sandmann@daimi.au.dk> writes:
> [...] > - What is going on inside QEMU? > - Which client is the X server servicing? > - What parts of a python/shell/scheme/javascript program is > taking the most CPU time? > [...]
These kinds of questions usually require navigation through internal data of the user-space process ("Where in this linked list is this pointer?"), and often also correlating them with history ("which socket/fd was most recently serviced?").
Systemtap excels at letting one express such things.
- FChE
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