I'm writing an auditd plugin. In my testing, I enabled pam_tty_audit.
After running test data through it, I notice that when logged in as root, the tty events are sent in real time, and not cached in the event queue.
When running as a user, the events are only spit out by the dispatcher (and presumably downstream in the auditd daemon) much later - presumably when the cache is full.
The other difference is the root tty events are sent as individual events, whereas the user events are collected and sent as a single compound event. I've tried various configuration changes, but this behavior seems to be set in stone. Is there a way of forcing the system to send tty events to the plugin in near real time as with root?