I'm trying to understand why some Kamailio processes become Connor MacLeod and go to live forever causing high # of aborted connections.

While watching in time over SHOW PROCESSLIST, some 12 kamailio connections in SLEEP state, most of them are reused over time (time value gets reset). However, a select few go on to SLEEP forever for as much as the mysql's wait_timeout allows them to. Default was 28800 sec, that's how long they lived. If I lower this to say 600 sec, even higher abort rate is observed.

I suppose my questions are:

1. Is this normal to have so many SLEEPing connections?
   
2. What is the recommended MySQL wait_timeout value under Kamailio?
3. Any other suggestions as to why such a high rate of aborted connections?

Merci!