Edit File: thread-business.txt
thread-business.stp - monitor syscall history Prints a periodic tabular report about the counts of syscall activity of all threads on the system, along with a textual recent-syscall-history for each $ stap thread-business.stp -T 5 execname tid count recent syscalls stapio 20196 50 ppoll read ppoll read ppoll read ppoll read ppoll sleep 20194 30 nanosleep close mmap2 fstat open brk brk brk munma systemd-udevd 491 23 epoll_wait munmap close read read mmap2 fstat open irqbalance 625 15 nanosleep munmap close read read mmap2 fstat open systemd-udevd 20193 14 exit_group close close munmap munmap munmap munmap stapio 20192 8 pselect6 fcntl read fcntl kill fcntl read fcntl stapio 20194 6 execve execve execve rt_sigprocmask rt_sigaction r The output when the system is not doing anything interesting. Rerunning the script while SystemTap was being built. $ stap thread-business.stp -T 5 execname tid count recent syscalls sh 20967 13559 exit_group rt_sigprocmask rt_sigprocmask read lsee sh 20826 5088 exit_group rt_sigprocmask rt_sigprocmask read lsee git-diff-files 21404 2967 exit_group write fstat mmap2 fstat lstat lstat lst git-diff-files 21348 2967 exit_group write fstat mmap2 fstat lstat lstat lst sshd 9634 2394 select clock_gettime write clock_gettime rt_sigpro make 21312 1110 exit_group munmap close write chdir stat rt_sigpro make 21368 1110 exit_group munmap close write chdir stat rt_sigpro make 21411 1011 exit_group munmap close write chdir rt_sigprocmask make 21410 983 exit_group munmap close write chdir rt_sigprocmask sh 21370 978 exit_group read rt_sigprocmask rt_sigprocmask read sh 21314 978 exit_group read rt_sigprocmask rt_sigprocmask read git-describe 21344 759 exit_group write fstat close getdents getdents ope git-describe 21400 759 exit_group write fstat close getdents getdents ope sh 20699 539 exit_group rt_sigprocmask rt_sigprocmask rt_sigact find 20825 461 exit_group close munmap close write close fchdir c sh 21499 403 exit_group rt_sigreturn wait4 rt_sigprocmask close find 20965 381 exit_group close munmap close write close fchdir c install 21505 359 exit_group close close close lseek lsetxattr close sh 21515 340 exit_group rt_sigreturn wait4 rt_sigprocmask close make 21367 334 exit_group munmap close write chdir rt_sigprocmask execname tid count recent syscalls