bert hubert <[email protected]> writes:
> How is this different from oprofile?
>
> Looks like you did an exact, but less capable, reimplementation.
The kernel module is indeed less capable by itself, but the userspace
tools are a lot easier to use and show you significantly more
details. Oprofile may have improved since then, but when I started
sysprof:
- oprofile didn't work on anything but smp kernels
- oprofile could not produce callgraph information without not only
recompiling my kernel, but also patching the kernel
- oprofile had a user interface that I simply didn't understand. As I
remember it, I had to know about performance counters and how to
translate those into binary masks
Contrast with sysprof, where you
- insert the module
- hit the start button
- do the thing you want to profile
- hit the profile button
and you get data presented in a way that is just a whole lot more
useful than the flat text files generated by oprofile.
Søren
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