I am trying to find the reason why my long-running app sometimes busts the maximum open file descriptor limit (
ulimit -n). I would like to periodically log how many file descriptors the app has open so that I can see when the spike occurred.
I know that
lsof includes a bunch of items that are excluded from
/proc/$PID/fd... Are those items relevant with regard to the open file descriptor limit? I.e. should I be logging info from
lsof or from