Donnie Berkholz wrote:
> To get oprofile going, build the kernel module (it's included in the
> main kernel, just enable it -- CONFIG_PROFILING in Instrumentation), run
> `make vmlinux` in /usr/src/linux, emerge oprofile, then run this little
> script like this:
> ./oprof someapp
> 
> It will start profiling, and stop when you quit that app. Make sure you
> run it long enough so that the app's startup stuff isn't the primary
> thing you profile; you want to profile the runtime slowdowns.

One more note, oprofile will profile _everything_ your computer is
doing, so make sure you are doing as little as possible that you don't
want to end up in the results.

Thanks,
Donnie