[lug] Program timing

[Zan Lynx]

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Stephen Queen wrote:
> I'm sure I've seen this discussed on this list before, I just don't
> seem to be able to find it in the archives.
> I'm looking for a program that can display the timing of various
> functions in a user space program. Does anyone have a recommendation
> or suggestion?
> 
> Thanks,
> Steve

gprof was already suggested, but if you don't want to recompile, you can
try using OProfile.  It's included in many Linux distros, which is good
because it requires a kernel module because it uses dedicated CPU
profiling counters.

I like OProfile.  I recommend using the graphical program oprof_start.
Afterward you get text console output using opreport.

You will certainly want to read the documentation
(/usr/share/doc/oprofile-0.9.1/oprofile.html on an old Fedora 5 box here).
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