On 01/07/2011 10:37 PM, Gabriel M. Beddingfield wrote: > > > On Fri, 7 Jan 2011, torbenh wrote: > >> On Fri, Jan 07, 2011 at 08:05:59AM -0600, Gabriel M. Beddingfield wrote: >>> >>> Indamixx 2/Transmission 5 (MeeGo) has a PREEMPT kernel, and >>> therefore rtirq won't work with it. We've spent a lot of time >>> tuning this kernel, and while there have been no clinical tests... >>> we're experiencing performance very close to Transmission 4's >>> PREEMPT_RT kernel (With jack running at 512x2 frames/buffer and >>> 44100 Hz) on various machines. >> >> ahh... 512 is pretty high latency, normal PREEMPT kernels should do that >> pretty well. > > I knew _someone_ would chime in about 23ms being "high latency." :-) LOL, but it is. As far as I'm concerned personally, when using the computer as effect-rack playing guitar or bass: latencies between 10 and 20ms are the worst! >20ms I can manage and compensate somewhat. <10ms is fine. <5ms is great. I do run jack at 64*2 - jack_delay measures 4.9ms total round-trip latency. It rocks! > FWIW, several popular apps (esp. those doing Fourier Transforms, like > time-stretchers) will not work reliably at <256 frames/period. Would you care to enlighten us which popular apps that are? 'fmit' for example uses FTT and works just fine at 32fpp. 2c, robin _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
