Perf events - KVM

This page describes how to count and trace performance events in the KVM kernel module. There are two tools, kvm_stat and kvm_trace, which were previously used for these tasks. Now this can be done using standard Linux tracing tools. Counting events Often you want event counts after running a benchmark: $ sudo mount -t debugfs none /sys/kernel/debug $ sudo ./perf stat -e 'kvm:*' -a sleep 1h ^C Per

[masterq]

"cat /sys/kernel/debug/tracing/trace_pipe" するとKVMのイベントがダンプできるらしい