Re: [LAU] Freebob high CPU usage

On Sun, 21 Sep 2008 01:06:21 -0400
"Hector Centeno" <hcengar@email-addr-hidden> 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.
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Received on Sun Sep 21 12:15:02 2008