编译运行
嵌入式端生成采样结果
.prof.x 文件
PC端分析采样结果
gperf tools
安装 sudo apt-get install perl graphviz ghostscript gv
生成函数调用关系图cpu.pdf
https://www.cnblogs.com/caosiyang/archive/2013/01/25/2876244.html
从函数调用关系图里面找到样本比例占用较高的函数
参考文献
https://zhuanlan.zhihu.com/p/343231398?utm_source=ZHShareTargetIDMore&utm_medium=social&utm_oi=1022619091906961408
https://www.cnblogs.com/caosiyang/archive/2013/01/25/2876244.html
http://bitjoy.net/2017/02/07/gperftools-tutorial/
https://gperftools.github.io/gperftools/cpuprofile.html
https://wiki.geany.org/howtos/profiling/gperftools
https://gperftools.github.io/gperftools/heapprofile.html