Messages in this thread | | | From | Olaf Dietsche <> | Subject | Re: timing an application | Date | Tue, 14 Jan 2003 23:09:16 +0100 |
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Maciej Soltysiak <solt@dns.toxicfilms.tv> writes:
> being inspired by some book about optimizing c++ code i decided to do > timing of functions i wrote. I am using gettimeofday to set > two timeval structs and calculate the time between them. > But the results depend heavily on the load, also i reckon that this > is an innacurate timing.
You will get elapsed time, which is usually not the same as used cpu time.
> Any ideas on timing a function, or a block of code? Maybe some kernel > timers or something.
If you're timing/pofiling some user space functions, gprof should be sufficient. If you want to profile kernel and module functions as well, try oprofile at <http://oprofile.sourceforge.net/>. It is part of the kernel since 2.5.43.
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