Re: advice on xruns

On Sun, 28 Jul 2019, [email protected] wrote:

> On 2019-07-28 11:41, Robin Gareus wrote:
> > On 7/28/19 5:26 PM, [email protected] wrote:
> > > I just wish I could work at 48000Hz.
> > 
> > I use the VSL1818 at 48kHz exclusively. I still have a 8+ year old
> > original firmware (and I have to force USB3 ports to USB2 compat).
> > 
> > I heard that some people have issues once the device as at least once
> > connected to a Mac or Window box. Maybe a factory reset can help?
> > 
> > > Maybe I dont understand alsa correctly, because a 48kHZ jackd string
> > doesnt work at 48kHz.
> > 
> > That's jackd's fault. Jack's ALSA backend always silently falls back the
> > "closest available" samplerate. -- IMHO it should rather fail instead,
> > but it doesn't.
> > 
> > You can check with the `jack_bufsize` commmandline tool. That prints the
> > actual current buffesize and samplerate.
> > 
> > HTH,
> > robin
> 
> In my case I dont get a sample rate only bguffer size.
> 
> ~$ jack_bufsize
> 128
> ~$

Yes, there are different versions giving different output. I stumbled
over that when I wrote my graphical frontend
http://marzen.de/Holger/jack_bufsize/

You can get the samplerate with jack_samplerate.