Hi Ralf, Thanks for the link on the wiki... I'm sure Stefane can answer this question more accurately, but I do know that oprofile and perfmon have coexisted quite happily for a while in the IA64 line..Of course, you can't use both at the same time. oprofile takes over the counters and uses them from a 'global' context, and you need to be root to set them. perfmon is intended up be used for performance tuning in production multiprogrammed environments, although it also has system-wide and per-cpu counting modes. So you can have multiple people using the counters inside their processes and threads and all the counts are preserved as the state and the full 64 bit values are part of the process context, for the per-thread monitoring modes. Again, this is a laymans answer and I'll let Stefane fill in the gaps of how oprofile and perfmon2 are integrated on the IA64 platform and how we make that work similarly on the MIPS platform. As I haven't updated my tree quite yet to 2.6.15, I haven't yet seen the oprofile code for the below...but it integration should be quite simple. (My tree only has the rm9000). As soon as I reintegrate to 2.6.15, I'll be sure to make sure oprofile and perfmon2 play nice. Anyways, glad to hear other folks are as interested in performance analysis! Regards, Philip > More recently myself and others have verified that Oprofile is working > on the 5K, 20K, 24K, 25K cores and the SB1 and SB1A cores in the Sibyte > SOCs - and a few more in the queue. So now I wonder how perfmon2 is > going to interfear with oprofile which already is in the kernel? > > I've put a quick page into the wiki at http://www.linux-mips.org/wiki/Perfmon2 > It's really just a starting point but people should know what's there. > > Ralf
