On Sun, 21 Sep 2008 01:06:21 -0400 "Hector Centeno" <hcengar@xxxxxxxxx> wrote: > Hello, > > I have two computers (desktop and laptop) with Ubuntu Hardy (using > kernel RT on both) and a Edirol FA-101 firewire interface. I was > comparing Jack's CPU usage (no other audio app running) using the > Edirol against a USB M-Audio Transit. I noticed on both computer the > CPU usage to be much higher with the firewire interface than with the > USB. On my laptop goes up to 15% or more and 8% on my desktop > (Centrino Duo @ 1.7GHz and Core 2 Duo @ 2.1 GHz respectively) while > using the USB interface the usage remains below 1%. Is this a normal > behaviour of firewire interfaces? Is this a Jack related issue? Is > there a recent and more efficient version of Freebob (ffado maybe?) > than the one from the Ubuntu repos? > > Cheers, > > Hector Are you sure that you are comparing the same latency settings? Just a thought because Firewire is capable of lower latencies than USB and lower latencies also mean higher cpu usage. As said, just a thought, I never used FW. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
