[sr-dev] [kamailio/kamailio] Enabling DMQ cause high CPU usage (#822)

[Charles Chance]

Apologies, I have been away for a couple of weeks. DMQ does indeed use mutexes to trigger processing of a new task by its workers.

Your log shows everything is as expected with DMQ - i.e. with no other traffic, a lock is acquired/released once every minute with each peer notification (node ping). There is nothing else unusual about your log (or GDB output) that I can see.

So it does seem likely that something in the way these locks are being implemented is causing the high load on your particular system. Maybe someone else can suggest another alternative, if enabling POSIX semaphores has not resolved the issue for you.

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