19 Feb
2004
19 Feb
'04
2:14 a.m.
OK, I can finally come back to this now.
On Tue, 17 Feb 2004 11:49:08 +0100 (MET)
Clemens Ladisch <clemens(a)ladisch.de> wrote:
Chris Metzler wrote:
Bingo. It helped my latency numbers *tremendously*. Every rep during
the X11 stress tests came down to less than 1ms above the fragment
latency -- everything. Unfortunately, it also made the desktop itself
a real pain in the butt to use. I can't imagine tweaking controls in
e.g. Ardour, attempting to find a set of parameters I like for something,
given how sluggish the desktop was.
So what are my options here? It's my understanding that the driver
available from Matrox directly is the same as that for XFree86, just
with some additional support for Matrox software ("PowerDesk"); so
dumping XF86's driver in favor of one from the card maker isn't likely
to pay off. Track down another video card? Ironic given that in that
other OS, this is a highly recommended card for DAWs, and that the
reason I got it was that the mfr was considered the most friendly
to open source.
-c
P.S. CC'ing you because it took me so long to respond; hope that's
OK.
--
Chris Metzler cmetzler(a)speakeasy.snip-me.net
(remove "snip-me." to email)
"As a child I understood how to give; I have forgotten this grace since I
have become civilized." - Chief Luther Standing Bear
Hi. I'm looking for some advice on how to
deal with latency
introduced by graphics activity.
[...] So it seems that while my latency numbers are generally
good, video stuff can cause significant problems. This matches my
experience, which is that I see significant xruns in JACK (50-70ms)
if I minimize or open a window, or move a window, etc.
Try disabling acceleration (put a line
Option "NoAccel"
into your driver section in XF86Config). If this helps, you can blame
the XFree86 driver.