perf是一款强大的工具
安装：
apt-get install linux-source
cd /usr/src/tools/perf
make
make install
参考文档:
https://www.ibm.com/developerworks/cn/linux/l-cn-perf1/
https://blog.csdn.net/yejing_utopia/article/details/46704749
https://www.cnblogs.com/arnoldlu/p/6241297.html
