I'am trying to monitor the offcore events in Exon E5-4620, the kernel is 4.3.0, and the system is running normally. After the system downtime, I reinstall the system. Now, when I run pmu-tools, the ocperf.py no longer support offcore. As follows. So, how to use offcore again, or what problem I have met?
failed to read counter offcore_response_demand_code_rd_llc_miss_remote_dram # time core cpus counts unit events 0.100098644 S0-C0 1 <not supported> offcore_response_demand_code_rd_llc_miss_remote_dram