Performance tools
This talk by Brendan Gregg is a fantastic introduction to the tools available in linux for performance instrumentation, monitoring, and debugging.
- perf-tools: https://github.com/brendangregg/perf-tools
- ebpf: https://ebpf.io/
- strace: https://man7.org/linux/man-pages/man1/strace.1.html
- valgrind: https://valgrind.org/
- ftrace: https://lwn.net/Articles/608497/
- uprobes: https://www.brendangregg.com/blog/2015-06-28/linux-ftrace-uprobe.html
uptimedmesg | tailiostat xz 1sar -n DEV 1sar -n TCP,ETCP 1