Server : Apache System : Linux server2.corals.io 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 09:17:08 EST 2021 x86_64 User : corals ( 1002) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system Directory :  /opt/rh/gcc-toolset-11/root/usr/share/systemtap/examples/process/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

#!/opt/rh/gcc-toolset-11/root/usr/bin/stap

global activity           // [execname,tid]->syscall-count
global activity2          // [execname,tid]->syscall-name-string-history

global syscall_history_length = 50 // override with stap -Gsyscall_history_length=NNN
global top_threads = 20

probe syscall_any # use tracepoint based syscall_any; we don't need context data
{
  activity[execname(),tid()]<<<1
  history = name." ".activity2[execname(),tid()]
  activity2[execname(),tid()] = substr(history,0,syscall_history_length)
}


probe timer.s(5) 
{
  printf("%16s %6s %5s %-*s\n\n", "execname", "tid", "count", 
                               syscall_history_length, "recent syscalls");
  foreach ([e,t] in activity- limit top_threads) {
    printf("%16s %6d %5d %s", e, t, @count(activity[e,t]), activity2[e,t])
    printf("\n")
  }    
  printf("\n")
  delete activity
  delete activity2
}