Linux工具之perf

版权声明： https://blog.csdn.net/qccz123456/article/details/83625608

ref：
http://wiki.csie.ncku.edu.tw/embedded/perf-tutorial
https://www.ibm.com/developerworks/cn/linux/l-cn-perf1/index.html
http://www.brendangregg.com/perf.html
https://blog.csdn.net/qq_15437667/article/details/50724330