Re: 3.8 vs. 3.5 for realtime USB performance

[James Stone <jamesmstone@xxxxxxxxx>]

On Sun, Jun 9, 2013 at 10:04 AM, Clemens Ladisch <clemens@xxxxxxxxxx> wrote:

James Stone wrote:
> I am struggling to get usable realtime performance <512 latency on my
> Ubuntu Studio "low latency" kernels 3.8... The 3.5 kernel in contrast works
> fine. I put a bugreport in with Ubuntu, but it seems like no-one else is
> reporting the same problem. Makes me wonder if I am doing something wrong.
> Is there anything additional I should be trying, or is this a known problem
> that is being worked on by the kernel devs?

You have to wait for the next stable kernel:
<http://git.kernel.org/linus/e194401783>

Hi Clemens (and everyone else),

This didn't fix the bug. See:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1191603

and:

https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1185563

Do you have any thoughts? Is this a problem with alsa/jack (as seems to be being implied) or with the kernel?

James

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