[Asterisk-Dev] CPU Profiling?

[Michael Giagnocavo]

>>	I've been trying to find some hotspots in Asterisk. I have a hunch
>>that replacing some linked lists with hashtables (say, looking up peers
>and
>>so on) should help a lot. I know that during loading (extensions, iax,
>sip),
>>removing the list traversal code (to check for duplicates) speeds it up
>tons
>>(quadratic to linear).
>>
>Wouldn't this then break the semantics (i.e. require users/peers to be 
>unique and such?).

Yes. In my case, I can avoid that (I have a program generating the friends
and contexts.) 

>You should be able to just build with -pg, run asterisk, and then use 
>any tool that can read gmon.out (i.e. gprof), to read the profile that's 
>created.
>
>Alternatively, you can use a sample-based profiler, like "oprofile", but 
>that requires some kernel support (which is likely included in your 
>distro anyway..). However, this approach is generally a bit harder to 
>get started with.


OK I'll look into that. Thanks!

-Michael