On Thu, 15 Nov 2001 21:47:02 +0100 Andy Lo-A-Foe <[EMAIL PROTECTED]> wrote:
> On Thu, Nov 15, 2001 at 07:54:41PM +0100, Maarten de Boer wrote: > > > Your results look good. For what processor did you compile your kernel? > > CONFIG_MK7=y > > Did I read correctly that some 3DNow instructions cause latency issues? That's what Roger Larsson suggested when I showed bad latency results. Compiling for 586 solved that problem for me, and I find it very strange you got good results compiling for CONFIG_MK7=y > > Can you run the alsa-lib/test/latency test (and use a CD as input) > > and tell me if it sounds good? > > I used line-in. Ah, yes, so did I. A cd through the line in. > The latency program locked up the box during its run > with the default settings. Yes, that is expected behaviour. > In fact in nonblock mode (I presume that's > default) the audio sounds horrible with all sorts of aliasing effects. Yes, same happens to me. > # latency -m 128 -M 128 -b > ...sounded ok, xruns.. I could not get the rate above 29337 without > immediately bombing out with an xrun (around frame 512). Same happens to me. What is going on here? How is it possible that latencytest gives good results, and alsa-lib/test/latency doesn't??? Did you also try poll mode? Maarten
