[LAU] Affordable well-working USB interface with low latency at 48kHz?

Fons Adriaensen fons at linuxaudio.org
Mon Nov 23 18:01:13 CET 2020

On Mon, Nov 23, 2020 at 05:25:34PM +0100, Giso Grimm wrote:

> without --sync jackd2 uses multiple cores whenever possible, at the cost
> of one extra buffer. With --sync jackd2 behaves single-threaded but has
> one buffer less delay (i.e., two buffers like in jackd1). Using --sync
> is thus mostly relevant when delay is the primary concern, and not
> performance.

Are you sure about the single-threading being controlled by --sync ?
I've never seen this mentioned before.

AFAIK, with --sync jackd2 writes the outputs to the driver when
all clients have run, same as jackd1. Without --sync it writes
the outputs of the previous cycle before any clients run, 
resulting in one period more latency but a bit more resilience
agains xruns.


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