I believe disk-based queueing is turned on by the engine automatically in 5.2 and above after 50 messages are queued. There is a parameter to force it to remain off until a higher value is reached:
DISKQ_MINMSGS (default is 50), in the “hci” users environment.
Recommended setting would be DISKQ_MINMSGS=5000 and place it in the file “/home/hci/.profile” . After making this envirnoment variable change, all hci user engines and the hcihostserver process will have to be restarted so that the new setting well be used.
