On Friday 04 May 2007, Mulyadi Santosa wrote: > Hi > > Sorry for late reply.. > > > 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?
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 _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-dev
