On Sun, Feb 10, 2013 at 5:34 PM, Louis Gorenfeld <louis.gorenfeld@xxxxxxxxx> wrote:
I used to be of the same opinion. Currently running a 3.6.11-rt kernel, and getting very low latencies from it, on a modest 5 year old laptop.
We're talking 0.666 ms, while compiling a kernel, 0 xruns.
Notes:
-logged in as root (yes yes, i know)
-rtirq running on startup to fix interrupts
-wifi is a killer, turn it off (Thanks to Jeremy's LAC workshop on RT-ing a system, I didn't know about it till then)
-cpu-scaling can cause xruns, cpupower frequency-set -g performance to run all cores at 100% all the time.
-i kicked out bluetooth to be sure
-as few daemons as possible
-there is no proprietary driver for the Ati HD2400XT integrated for the 3.x series kernel. Hence "normal" graphics, no 3d acceleration
Details:
Acer travelmate laptop: Intel Core2Duo 2.0 Ghz
Arch linux based system: Linux audio 3.6.11-rt25-1-rt #1 SMP PREEMPT RT Tue Dec 25 00:18:17 CET 2012 x86_64 GNU/Linux
Soundcards: RME Multiface II, running trough PCMCIA adapter. Also have an Echo Indigo DJ card, PCMCIA too.
devices don't perform as well on the 3.x series kernels compared to my old trusty 2.6.33,
I used to be of the same opinion. Currently running a 3.6.11-rt kernel, and getting very low latencies from it, on a modest 5 year old laptop.
We're talking 0.666 ms, while compiling a kernel, 0 xruns.
Notes:
-logged in as root (yes yes, i know)
-rtirq running on startup to fix interrupts
-wifi is a killer, turn it off (Thanks to Jeremy's LAC workshop on RT-ing a system, I didn't know about it till then)
-cpu-scaling can cause xruns, cpupower frequency-set -g performance to run all cores at 100% all the time.
-i kicked out bluetooth to be sure
-as few daemons as possible
-there is no proprietary driver for the Ati HD2400XT integrated for the 3.x series kernel. Hence "normal" graphics, no 3d acceleration
Details:
Acer travelmate laptop: Intel Core2Duo 2.0 Ghz
Arch linux based system: Linux audio 3.6.11-rt25-1-rt #1 SMP PREEMPT RT Tue Dec 25 00:18:17 CET 2012 x86_64 GNU/Linux
Soundcards: RME Multiface II, running trough PCMCIA adapter. Also have an Echo Indigo DJ card, PCMCIA too.
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