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#! stap
global command, syscall_count, syscall_times, this_syscall_time, this_syscall
function accumulate () {
pid = pid()
if (! ([pid] in command)) command[pid] = execname()
syscall=pp() # just the substring ideally
syscall_count[pid,syscall] ++
this_syscall[pid] = syscall
this_syscall_time[pid] = gettimeofday_us()
}
function decumulate () {
pid = pid()
syscall = this_syscall[pid]
syscall_times[pid,syscall] +=
gettimeofday_us() - this_syscall_time[pid]
# free up memory
this_syscall[pid] = ""
this_syscall_time[pid] = 0
}
probe kernel.function("sys_*").call {
accumulate ()
}
probe kernel.function("sys_*").return {
decumulate ()
}
probe timer.ms(5000) {
exit ()
}
probe end {
foreach ([pid,syscall] in syscall_count-) {
printf("%s(%d) %s count=%d ttime=%d\n", command[pid], pid, syscall,
syscall_count[pid,syscall], syscall_times[pid,syscall])
if (count++ > 30) next
}
}
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