kperf

linux kernel function callchain profiler

main source code comes from linux-tools profiler

compile

make 

and you will get src/kperf

usage

this program needs to read kernel symbols, so you should always use sudo

specify the pid to monitor, the program will stop monitoring util the pid is finished or ctrl+c

sudo ./src/kperf -p <pid>

• pid > 0 means collect program and kernel function callchain
• pid < 0 means collect kernel function callchain only

you could use -t to setup a timer, the program will stop monitoring when time's up

# monitor 60s
sudo ./src/kperf -p <pid> -t 60

result

the program will generate report.html

ctrl+f search all results, right click to highlight the marker

see the demo gif above

reference

• linux-tools profiler
• awesome-profiling
• cpplinks
• cpplinks performance.tools
• 推荐适用于 Linux 的 C++ 工具?(分析器、静态分析等)?