Lee Revell <[EMAIL PROTECTED]> writes: > On Sun, 2006-01-15 at 14:23 +0100, mlang wrote: >> Chris Cannam <[EMAIL PROTECTED]> writes: >> >> > On Sunday 15 Jan 2006 11:12, Florian Schmidt wrote: >> >> If you want to use alsa_seq's queues to schedule events for delivery >> >> at a later time, you probably might have a look at rosegarden. >> > >> > There's a file base/test/seq/generator.c in the Rosegarden source tree >> > that does basically what was described using the sequencer queue. It >> > does however schedule in real-time rather than beats (and so does >> > Rosegarden itself). >> > >> > http://cvs.sourceforge.net/viewcvs.py/rosegarden/base/test/seq/generator.c?view=markup >> >> Pretty intersting, I just ran this and noticed it (the diff between >> queue and gettimeofday time) drifts about 70 usecs per second. Is this >> normal expected behaviour, or another reason to hate the day I decided to buy >> a X2 CPU? >> >> P.S.: ANyone got any hard facts on the TSC SMP issues? 2.6.15 >> is definitely worse for me than 2.6.14, things that used to work just dont >> anymore. >> > > Yes, the TSC is useless on these machines, but the kernel can work > around it. You need JACK patched to use clock_gettime() for > jack_get_microseconds.
THis doesn't make sense to me, either the kernel can work around it properly *OR* we have to patch userland. -- CYa, Mario
