Hi Alexei, On 06 Nov 2008, at 13:56, Alexei Kuznetsov wrote: > I mean, the application uses 10% of cpu without any media active. > Also, pjsua without any params uses less than 1% cpu after start-up, > but 10% after the first call. Is it something you could improve in the > future? Or is it the design, or is it not up to pjproject but to other > code pjrpoject uses? Is it on a Mac only? > > -- > Best regards, > Alexei I've noticed exactly the same behaviour on Mac, it's a very annoying problem. Just having the sound device open seems to consume an inordinate amount of CPU cycles already. From what I've seen, it actually seems to be a PortAudio issue. I already went on their mailinglist to discuss the issue, but I didn't pursue the matter. Ruud Klaver AG Projects