Brad SUCKS under Linux / WINE - How low can YOU go? :D

Does Brad suck on your Linux box? What's the minimum playback latency (without Xruns) you can get under Linux/Wine with the Brad Sucks project? Download the latest REAPER 3 and the BradSucks project: Post your machine specs, Linux distro, the version of JACK / Wine / WineASIO and the JACK settings.

Mmmmkay... My laptop is: Pentium M 1.6ghz Kubuntu 8.10 Onboard Sigmatel Audio(alsa drivers and Wineasio) Crappy Dell components With my custom realtime kernel, I was able to playback at 128samples@44.1khz with no Xruns, with the stock(non-RT) Kubuntu kernel, I was getting a few Xruns at 128, perhaps 6-10 over the duration of the entire demo project.

ubuntu 9.04, standard kernel (not -rt), gnome/compiz up and running (3d cube and all), lots of stuff in the background, firefox (writing this while brad sucks plays in the background), m-audio audiophile 2496, amd phenom, quad core (frequency scaling set to OnDemand, all cores at 50%, 1.1ghz now), 44.1khz, . no problems with 64 samples buffer, (32 samples work too, but some audible ticks here and there), (but no xruns!), i usually work with 128 (just feels safer :) )

You can download the BradSucks project from the link in the first post.

I'm using Ubuntu 9.04 Jaunty 32Bit - Gnome and mostly default settings. Gnome Theme is Dust. My System: Thinkpad R60e with an Intel T2300 Sound Interface: Simple Behringer UCA-202 USB With the default kernel i can set Frames to 128 and Buffer to 2 @ 44100 -> no xruns. With 64 Frames i get a lot of Xruns. No big difference with the RT Kernel. Less Xruns but the system freezes from time to time...

@Synth I downloaded Turbopup Alpha 3 yesterday. I expected to find already the neccessary applications like jack, wine e.g., but i couldn't find them. Do you have a tutorial howto setup wineasio, reaper for turbopup? And where can i find the extrem Edition?

Hi there, Ubuntu Jaunty, Realtime Kernel Dell Vostro 1400 Laptop, HDA-Intel Audio 256 Samples: Still cracks and Xruns 512 Samples: Okay What am I doing wrong here? In XT2 (also over Wine) I can go much lower in the latency. Any ideas? Regards, fladd

Hi! have you made the neccessary modifications to the limits.conf file? Perhaps the Dell Chipset and the onboard Sound are not the best friends? In Reaper Options you can deactivate Audio -> Buffering -> Use native events... Best regards, Acker

For more stability and even lower latencies,try to increase the JACK timeout value and the realtime priority.

Strange, now it worked great for a couple of days, and now, without changing anything, the CPU load is always very high, even on the simplest projects, such that I get crackles very soon. This is true for the Realtime Kernel and for the normal kernel (with lower latencies of course). And it is true for Reaper and XT2. It is always the Jack client (Reaper or XT2) that has CPU usage values of 50% and more. Any ideas why this could be all of a sudden? fladd EDIT: I might add that it is not only crackling, but also playing very unstable, like if a drummer cannot play a steady groove.