Hello List.

I’m using a Freeswitch server as a B2BUA transcoder.  I have a a HP Proliant DL380 G7 with 2 Quad Cores and 8 Gig memory.   I’m using Centos 5.5 64bits

[root@transcoder sngtc]# more /etc/issue

CentOS release 5.5 (Final)

Kernel \r on an \m

[root@transcoder sngtc]# uname -a

Linux transcoder.redvoiss.net 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:14 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

I also have two transcoding cards Sangoma D100e. 

The problem is that I’m having weird spikes of  “load average” cpu  every 20 minutes (aprox), without any reason, reaching near of 12.5 of load average for this machine.

I have an average of 200 simultaneous  calls (all doing transcoding from G711 to G729) and I don’t have any crontab job running.  What could be the cause of these spikes?  I have been trying to optimize the configuration but the cpu spikes persists.

Can someone help me to find the problem here?

Thanks in advance.

Ricardo Martinez.-