31 Jan
2007
31 Jan
'07
11:43 a.m.
On Wed, 2007-01-31 at 13:46 +0200, Sampo Savolainen wrote:
That might help a bit. But keep in mind that DSP usage
of 80% is really
high. It doesn't leave your computer much headroom for other tasks, or even
plugins which might periodically use more CPU cycles than normally (=which
is in fact a sign that a plugin is not "academically" real time safe). In my
opinion 80% is about the maximum of DSP usage you can expect to be stable to
work with.
indeed. when stephane, jesse and i were testing jack and jackdmp last
year for load limits, we found on linux and OS X that if the JACK DSP
figure got close to 80% it was very hard to ensure continued RT,
glitch-free performance. as sampo indicated, its partly a function of
code not being truly RT safe, and partly a function of the x86
architecture compared to a real DSP chip - the DSP is totally
deterministic in execution time, the x86 is not.