15 Jan
2006
15 Jan
'06
9:48 a.m.
On Sun, 2006-01-15 at 14:23 +0100, mlang wrote:
Chris Cannam <cannam(a)all-day-breakfast.com>
writes:
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 really should be in JACK CVS by now, if it is not already.
Lee
On Sunday 15 Jan 2006 11:12, Florian Schmidt
wrote:
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.
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?…