The sm_monitor is a debugging tool that is invoked on demand. Before executing the debugging activity, add more disc space or free up some disc space before running sm_monitor or set the SM_WRITEABLE = path (different partition with sufficient disk space) when starting the server, so that all the logs and the sm_monitor data is redirected to that path instead of the default local/logs directory.
If the server goes into a Traced state, free up some disc space and send CONT signal (Kill - CONT pid) to resume the process from where it left off.