4 May
2007
4 May
'07
8:18 a.m.
On Friday 04 May 2007, Mulyadi Santosa wrote:
Hi
Sorry for late reply..
seq24 does _not_ use RTC for timing. It uses an approach based on sleep() (in
some way or the other), so setting the rtc-max-frequency does nothing for
seq24 performance. To improve seq24 performance over the vanilla kernel you
need a kernel with the system timer frequency set back to something like
1000Hz (vanilla has 200Hz, which is too unprecise for MIDI timing based on
sleeping short amounts of time)..
Flo
--
Palimm Palimm!
http://tapas.affenbande.org
I have
dev.rtc.max-user-freq = 8192
in my sysctl.conf.
Before seq24 timing seemed to be changing between laid back and forward.
Haven't tested since setting.
Do
cat /proc/sys/dev/rtc/max-user-freq
to see your setting now.
echo 8192 > /proc/sys/dev/rtc/max-user-freq
changes setting.
Thank you, even this small hint gave me a valuable direction. It makes
me believe there are many applications that do rely on non-kernel-timer
source.. in this case RTC.
May I ask, could seq24 reports somekind of note playing delay? or xruns?