CPU usage during calls never reaches higher than 2% and our memory usage is quite low as well:
CPU states: 1.9% user, 0.0% nice, 0.0% system, 0.0% interrupt, 98.1% idle Mem: 43M Active, 10M Inact, 24M Wired, 13M Buf, 400M Free Depending on bandwidth requirements, we may eventually use G.729 but we're currently testing in our lab on a completely unloaded 100mbit network. --- Tim Nelson RockBochs Inc. ----- "Vivek Khera" wrote: > I've tried both UDP and TCP tunnels with the same result. The setup is nothing special, just plain old SIP to an Asterisk box using G.711u codec. > > Any ideas on what I can do to decrease the effect OpenVPN is having on the > traffic? All suggestions welcome and appreciated! > > Is the CPU capable of keeping up the OpenVPN encrypting? Perhaps you need more CPU or RAM for your firewall(s). > Another thing to try is a better codec. I personally use G.729 on all non-local SIP clients. It works extremely well on slow long-haul links, and the G.729 codec license for Asterisk is pretty cheap from Digium.
