why offcore is not support?

[Ying_W_]

I use emu-tools to monitor-performance and it is use normal. After the system breakdown, I reinstall the system and the perf is not support offcore any more. as shown below. So what problems may be I have encountered?

failed to read counter offcore_response_demand_code_rd_llc_miss_remote_dram
failed to read counter offcore_response_demand_rfo_llc_miss_remote_dram
failed to read counter offcore_response_demand_data_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
     0.100098644 S0-C0           1    <not supported>      offcore_response_demand_rfo_llc_miss_remote_dram
     0.100098644 S0-C0           1    <not supported>      offcore_response_demand_data_rd_llc_miss_remote_dram

[Andreas_K_Intel]

Likely your new kernel doesn't support your CPU (kernel too old)

[Ying_W_]

I have solved this problem.

I use pmt-tools to counts this events, and pmt-tools download event from https://download.01.org/perfmon/HSX/， the new updated version there is a problem. I back to the old version, and the problem solved.