You can also check the peer logs. Every five minutes a peer writes something like this to its grid.log:
12 Nov 2019 08:46:38,786 [Thread=AMP - Health Component - Periodic Task Executor - 1] INFO HealthComponent [PeerName=CDP]
HEALTH_STAT, 2019-11-12 08:46:38, A:CDP:CommandLineAdapter, COUNT_OF_ACTOR_ADAPTER_CALLS, 14, 2019-11-11 08:57:34
HEALTH_STAT, 2019-11-12 08:46:38, A:CDP:CommandLineAdapter, RUNNING_STATE, running, 2019-11-05 04:51:56
HEALTH_STAT, 2019-11-12 08:46:38, A:CDP:HTTPAdapter, RUNNING_STATE, running, 2019-11-05 04:51:56
This tells you every adapter on every peer, how many requests each adapter has run since the last time it was restarted, and the last time each adapter ran a request (the second date/time, at the end of each entry). This entry shows that the adapter named CommandLineAdapter on the peer named CDP has run fourteen requests since its last restart, and the most recent event ran at 08:57 on Monday. If an adapter has no COUNT_OF_ACTOR_ADAPTER_CALLS or COUNT_OF_MONITOR_ADAPTER_EVENTS entry, its count is zero. This logging exists on every peer on every supported version of BAO/TSO, so you can check it even if you do not have a Dashboard installed.