Hi Kurt, I had to disable all CPU throttling mechanisms in the BIOS settings like Intel's SpeedStep and ACPI 3.0 T-states. Make sure you have adequate cooling if you do so!
Regards, George <[email protected]> wrote on 12/02/2011 07:28:49 AM: > 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 > > _______________________________________________ > Xenomai-help mailing list > [email protected] > https://mail.gna.org/listinfo/xenomai-help >
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