[asterisk-users] Asterisk 1.62.13 - CPU spikes every 10 minutes

[Dave Platt]

For what it's worth... I also observed an unusually high
level of CPU activity on my small (home-system) Asterisk
installation, shortly after I switched to 1.6.2.13.

The pattern in my case was (as best as I could tell) a
CPU load of 2% to 10%, pulsing upwards every few seconds.
I couldn't resolve it any more finely than that, at the
time I saw it.

This is a very small Asterisk install (just two or three
SIP extensions registered at the time, no calls in progress,
no significant activity noted on the net interfaces at
the time), running on an Atom N270 CPU system.  I am using
the "internal_timing = yes" option (pthreads timing rather
than dahdi).

I did a "core restart when convenient", Asterisk restarted,
and the CPU load dropped to negligible levels.  It has
remained low ever since (about 7 minutes of CPU used, over
the space of a couple of days).

I have a hunch that in 1.6.2.13, some resource isn't being
cleaned up properly after calls terminate or extensions
de-register, and that the system is spending a significant
amount of time "chasing its tail" navigating through these
obsolete resources.  Just a hunch, though... nothing to back
this up.