Dynamic probe on function perf

Add a kprobe with an argument, then record it; inspect kernel internals without rebuilding

perf probe --add 'tcp_sendmsg size' && perf record -e probe:tcp_sendmsg -a -- sleep 5

#perf #kernel #debug #observability

more perf all 17 commands →

Record CPU cycles perf record -g ./my_app Show perf report perf report List available events perf list Stat command perf stat ls -la Record with specific event perf record -e cache-misses ./my_app