[linux-audio-user] Re: Recent LKML discussion on preempt/latency in 2.6 kernels

Jack O'Quin joq at io.com
Thu Mar 25 19:49:27 EST 2004

Fernando Pablo Lopez-Lezcano <nando at ccrma.stanford.edu> writes:

> This is from the output of latencytest 0.52 and looks very good. But,
> and it is not a small but, when I tried to use real jack and jack
> applications I could not go down to 2x128 at all, kept getting small
> xruns. But an idle jack at 2x64 plus disk activity ("tar cf usr.tar
> /usr") would very seldom generate xruns. 

Thanks for the data, Nando.

I've been wishing for a version of that latencytest that uses JACK.
Scheduling latency problems are exacerbated by JACK's demanding

> Takashi's patches do improve the situation quite a lot. 

Y'all do good work.  With continued attention of this caliber, I
expect we'll get to 2.4 levels before long.

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