To better tune your server's performance, you can configure the minimum and maximum number of threads. The server uses threads to execute services, retrieve documents from the messaging provider, and execute triggers. When the server starts, the thread pool initially contains the minimum number of threads. The server adds threads to the pool as needed until it reaches the maximum allowed. If this maximum number is reached, the server waits until processes complete and return threads to the pool before beginning more processes.

You can also set a warning level for available threads. When the percentage of available threads is equal to or less than the warning level, the server generates a journal log message to alert you to the reduced thread availability. The server generates another journal log message when the number of available threads is greater than the threshold.

To view system threads that are running on the server, navigate to the Server > Statistics > System Threads screen. See Canceling or Killing a Thread for more information.