Re: [Jack-Devel] JACK 1.9.8 targets / MIDI Driver status?

Le 6 juil. 2011 à 10:34, Peter L Jones a écrit :

> Hey all,
> 
> I've been running with the 20110509 release of jack2 for windows for a while
> now and, apart from the rather noisy diagnostics when not passing "-X WinMME",

What is the problems exactly?

> I've not hit any problems in general use.

Fine.

> 
> Is there anywhere tracking outstanding tasks before release I can follow?  I've
> time on my hands right now, so if there's anything I can do, I'd like to know
> where my efforts are best expended.

If would be interesting to know if MMCSS (http://en.wikipedia.org/wiki/Multimedia_Class_Scheduler_Service version) helps a bit for Real Time performance.

The code for thread management now activates MMCSS if priority (the -P parameter) is more that 90. 

So you could possibly try to use -P over 90 (in QjackCtl or in a terminal when launching jackd) then is the system support MMCSS "MMCSS API used to acquire RT for thread" will be printed.

It would to see if they are less XRuns with this mode especially with small buffer size.

Stéphane

1309955051.16429_0.ltw:2,a <AB7EBB72-C748-41A2-B829-83F389690691 at grame dot fr>