CPU# PMU# PMU counters and profiling basics CPU mental model and simplest PMU counter So, how about counting more? Fixed and programmable counters MSRs - model specific registers Counting vs. Sampling Sampling and profiling 我写的文章# 被误解的CPU利用率、超线程、动态调频 —— CPU 性能之迷 Part 1 谁动了我的 CPU 频率 —— CPU 性能之迷 Part 2