> The cpu frequency is obtained by the linux kernel calibration procedure. > This same procedure returns the same imprecise results without xenomai. > Now, something in the distro kernel must change the frequency to a nice > round value (a good candidate would be the cpufreq module, except that > the acpi_cpufreq module does not seem to load on my atom). > > As a workaround, xenomai proposes kernel parameters to adjust the idea > of the machine clock/cpu frequency. Try adding the following argument on > the kernel command line: > > xeno_hal.clockfreq=1600000000 xeno_hal.cpufreq=1600000000
Hi Gilles, Thank you very much for your help and advice. I tried it out on our PC, and it worked. The latency between messages stays constant (only varies to a few microseconds) after each reboot. I really appreciate for your help and patience. Best regards, Philip Ha
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