ss.min_read_queue_percentage

The ss.min_read_queue_percentage option specifies the percentage to which the message queue threshold must fall before any additional messages are read into the queue. The default value, .5, is the recommended setting. Changing this setting is only recommended if you are having problems with your JVM running out of memory. Related options are ss.max_read_queue_length and ss.max_read_queue_size.