On Wed, Mar 20, 2002 at 03:06:56AM -0500, Paul Davis wrote: > >CORRECTION: > >Just retested with full hdparm (added -u setting) settings on > >2.4.19-pre3-ac+preempt, and no skipping with above activities. This > >seems pretty good. > > > >I could generate skips when switching from X to text console. Could not > >generate skip when cycling virtual desktops within X (at high key repeat > >rate). Again this seems pretty good. > > this is a know deficiency in the vt "driver", and is noted in Andrew > Morton's "Things Not To Do" while requiring low scheduling latency. it > would be nice if the vt code was fixed sometime, but right now, i > think it can cause a scheduling delay for up to about 50ms. > > btw, i think it is still the case the Andrew's patch provides more > reliable and lower absolute latency than the preemption patch.
It might do, but I couldn't compile it against 2.4.19-pre3-ac3, and with the three hdparm parameters, I was still generating skips on 2.4.18+akm with just file copying. When 2.4.19 proper is out I'll do the rounds again when the patches are available (and, in time, figure out how to use a proper latency measuring tool - so my test reports might become useful to someone other than myself). Lock-break patch also didn't apply to 2419pre3ac3 either. Anyway, I can play mp3s which is a starting point for me. Next I need to get a hammerfall 9652 card working in a desktop so my band can start digital recording. I had read akm's 'things not to do' but for some reason missed the hdparm stuff. In summary, what is currently working for me: on a new DELL Inspiron 8100 laptop, Maestro 3i sound, 1GHz Pentium ('Pentium III' I assume), 60G HDD, Radeon Mobility 7500 64MB, DRI and framebuffer compiled into kernel: Linux 2.4.19-pre3-ac3 + preemptible kernel patch hdparm -c 1 -d 1 -u 1 /dev/hda Thanks for everything, zen _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel