Strace

strace is a diagnostic, debugging and instructional userspace utility for Linux that allows to trace system calls and signals.

strace -c -f -p $PID

Examples

• Strace ps command:

strace -e open ps

• strace -p MY_PID_NUMBER

See also

• Monitoring and Performance
• lsof,strace, auditctl, fuser
• Performance: perf, strace, Dtrace, SystemTap, iperf, uperf, cgroups, netperf, sysbench, Queries Per Second (QPS), PerfKitBenchmarker, Load testing
• syscall, Dtruss, fork, Fork bomb

http://man7.org/linux/man-pages/man1/strace.1.html