[Xenomai-help] Xenomai installation: high latencies

[Kurt Geebelen <kurt.geebelen@domain.hid>]

Dear all,

I've tried installing Xenomai, following these instructions:

http://www.xenomai.org/index.php/Building_Debian_packages

but then for the latest version (xenomai 2.6.0, and kernel 2.6.38.8 and 
for 64 bit) .

For configuring the kernel, I followed these instructions:

http://www.xenomai.org/index.php/Configuring_x86_kernels

All that is stated on these websites works without problems, and I am 
able to boot in the installed xenomai kernel. However, when I perform 
the latency-test (latency in /usr/lib/xenomai), I get latencies of more 
than 1400 microseconds.

The system I have is the following:

Dell™ Precision™ T1500
One® Intel™ Core i7-860 (2.8GHz, 8MB L3, 95W, Quad Core)
6GB DDR3 non-ECC Memory (1333MHz, 3x2GB)
512MB PCIe x16 NVIDIA Quadro FX 580 Graphics Card
Intel Solid-State Drive 320 Series 120GB

I have tried reinstalling the kernel several times, but I always end up 
with high latencies.
I also have consulted with others, who followed the same guidelines as I 
did, and their latencies are about 100 times lower.

Is there somebody who knows what the problem might be? Might it be a 
hardware-related problem?

Many thanks in advance,
Best regards,
Kurt Geebelen