Hello, I'm trying to get PMU counts of memory controller, to get information of CPU/GPU memory usage on integrated GPU systems.
Refer to the link, it seems that sky lake supports uncore events. However I cannot find corresponding events on the comet lake.
I tried these commands:
$perf stat -e uncore_imc/event=0xe7/
event syntax error: 'uncore_imc/event=0xe7/'
\___ Cannot find PMU 'uncore_imc'. Missing kernel support?
$ sudo perf list uncore
List of pre-defined events (to be used in -e):
$ ls /sys/bus/event_source/devices/
breakpoint cpu cstate_core cstate_pkg i915 intel_bts intel_pt kprobe msr software tracepoint uprobe
Also I used libpfm4 and there weren't events related.
I'm using ubuntu 20.04 and the kernel version is 5.4.0-72-generic.