Client_Drain_Timeout

When a client disconnects, the server must clean up its destroyed subscriptions. When the number of destroyed subjects is very large, the clean-up task could interfere with the server’s responsiveness to active clients. Two options let you spread the clean-up effort over time, so active clients still receive prompt service:

The Client_Drain_Timeout option specifies the interval (in seconds) to wait before unsubscribing subjects from destroyed RTclient connections.

When Client_Drain_Timeout is set to 0.0 (the default), this functionality is disabled—the server cleans up all the destroyed subjects in a single batch.