Edit File: syscallerrorsbypid.stp
#!/usr/bin/stap # # Copyright (C) 2018 Red Hat, Inc. # By William Cohen, Red Hat Inc. # wcohen@redhat.com # # USAGE: stap syscallerrorsbypid.stp --suppress-handler-errors # # The "--suppress-handler-errors" option allows the script to continue # run when probes are skipped. The probe skips make the data less accurate, # but are otherwise harmless. global arr%[20000], sys%[20000] global procname% probe syscall_any { sys[tid()] = syscall_nr } probe syscall_any.return { if (tid() in sys && retval < 0 ) { arr[pid(), sys[tid()], retval]++ procname[pid()] = execname() } delete sys[tid()] } probe scheduler.process_exit { delete arr[pid(),*,*] delete procname[pid()] } function process_name(pid) { return sprintf("%s[%d]", procname[pid], pid) } probe prometheus { @prometheus_dump_array3_map(arr, "count", "pid", "syscall", "error", sprint, process_name, syscall_name, errno_str) }