Server Gurus Discussions

[aaltonen]

When I'm using uprof to profile hardware event on dell power edge r6415, the uprof gives a message: "core pmc event based profiling is not supported". I don't know is it because of ibs is not enabled. When I look into bios, there are no ibs related options. Does any one knows how to solve this issue?

[swarup]

I assume you are using a Linux distro on R6415. This happens when the Linux kernel-perf doesn't support access to PMC MSRs. On Linux, uProf uses PERF event subsystem of kernel.

If you are using a Linux distro, then please check if "/sys/devices/cpu/type" file existing. If not existing, then the kernel-perf is not supporting the PMC events. This happens when the kernel is compiled with the config for "no-support for hardware events".