On Sun, May 30, 2010 at 11:02 AM, Grant wrote:
I too would like to better understand these statements and the
benefits, if any, provided by loading snd-hrtimer. For example, if
snd-pcm wasn't dependent on snd_timer, why this dependency from
What kinds of timing info is snd_pcm deriving from snd_timer?? What
are the benefits of using HRtimer versus system timer with ALSA?
Which results in best performance (latency and drummer-accurate MIDI
Which uses least system resources?
On Fri, May 28, 2010 at 12:11 PM, Paul Davis wrote:
Then what is the purpose of the --clocksource flag, and what are the
advantages/disadvantages of the different settings:
"c(ycle) | h(pet) | s(ystem)"??
In a different thread you mention, regarding jackd's use of snd-seq:
Would using snd-hrtimer with snd-seq change this assessment? I haven't
done any precise measurements myself, but I didn't hear anything sound
terribly "off" w/r/t my usage of ALSA midi through qjackctl/jackd (
"/usr/bin/jackd -dalsa -dhw:M66 -r44100 -p256 -n2 -Xseq -zs -H -M").
Certainly not "unusable" just using MIDI alone.
Is this issue related to timing of MIDI versus audio, or MIDI timing
itself causing the music to sound different than the musician
Thanks for all the helpful advice,
PS: To get snd-hrtimer at boot in Fedora:
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