I am trying to access performance counters inside the uncore especially the IMC and QPI ones. I have a Core-i7 3770 using Fedora release 17 with kernel version : 3.6.0-rc1-xxxx.
I have used the following tools to query available uncore counters but no luck so far:
1. PAPI 126.96.36.199 : papi_native_avail doesn’t return anything related to uncore.
2. libpfm4 4.3.0 : showevtinfo does return a few supported events for LLC but nothing related to IMC or QPI.
3. perf 3.5.0 : perf list also does not give any interesting events.
I see a perf_event_intel_uncore.h file inside the kernel source (linux/arch/x86/cpu) but there's no documentation or tool which uses that file. Is there any way I can access those performance counters?