Been playing with oprofile at work lately. Not sure if it's the fault of the EMT64 intel CPU that's on my work computer or the fact that I am using a 2.6.9 kernel, neither CPU events nor callgraph work. I am not sure if I am allowed to discuss the profile results, but let's just say the result suprised me a little. Too bad sysprof requires kernel 2.6.11 or later, and too bad that Centos 4.2 is only up to 2.6.9.

Installed oprofile on my powerbook that's running linux 2.6.15, and I am still limited to using timer interrupts. In this setup oprofile doesn't complain about callgraph though, but I am not able to decipher the result that opreport -c produces. I used it to get a profile dump of gaim starting up, but the result isn't too useful, I am guessing that's because timer-based profiling doesn't really work well for short running tasks.

Next thing I am going to do is try oprofile on my home desktop, which has a AMD 32bit CPU. Will also try sysprof on my powerbook and see if that can produce anything more useful.