Hi all,
Sorry for taking so long to respond, I didn't have time to work on it.
SMI's didn't appear to be the problem, and I also am not using the
nvidia binary driver.
I tried disabling USB in the BIOS, and that helped! My latencies are now
under 6 microseconds. Since I don't need USB (I'm using a PS/2 mouse and
keyboard now), I'll use it like this.
Thanks for the help,
Best,
Kurt
Op 6/12/2011 19:12, Gilles Chanteperdrix schreef:
On 12/02/2011 04:28 PM, Kurt Geebelen wrote:
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?
It is already written in the URL you mention, but I will repeat it
nevertheless, if enabling SMI workaround, have you checked the kernel
logs to see whether the SMI workaround actually works?
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