From: Hermann Meyer <brummer-@web.de>
To: linux-audio-user <linux-audio-user@lists.linuxaudio.org>
Subject: [LAU] Which kernel do you use?
Message-ID: <54C22928.2000704@web.de>
Content-Type: text/plain; charset=utf-8; format=flowed

I've get a new (used) mobo, and played with the kernel version to use.
So far I've tested all from 3.19.0-rc5 down to 3.4.104

Those, were rt-patches available I test as rt-kernel.
Best results, I only get with the 3.4 series, all later kernels
introduce Xruns here, sporadic, unrelated to the dsp load, even, when
just jack is running.
I build then all with the same configuration, play a bit with
configurations deselect hyper-threading on the latest kernels, use
threadedirqs,  all to no avail. Only 3.4.xxx-rt kernel run absolute smooth.
So, which kernels with witch configuration do you all use?
<snip>
Graphics:  Card: NVIDIA GT216 [GeForce GT 220]
            bus-ID: 01:00.0 chip-ID: 10de:0a20
            Display Server: X.Org 1.16.1.901 drivers: nouveau (unloaded:
fbdev,vesa)

I see you are using the nouveau driver for NVIDIA.  Other RT users with NVIDIA have commented on performance issues with nouveau and had better performance with the NVIDIA akmods.

-- Jeff