Re: [Xenomai-help] New install of Xenomai 2.3 for 2.6.17 kernel.... Various problems

[Jan Kiszka <jan.kiszka@domain.hid>]

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xenomai@domain.hid wrote:
> Hello,
> 
> I have been working on trying to find the optimal linux kernel
> configuration and have noticed a couple problems.  No matter what I
> do it seems that while cpu #2 is detected, nothing gets scheduled on

Sounds like some bug that was fixed in 2.3.1. Are you already using that
version? If not: highly recommended.

> it.  Also, there is always a modprobe process running at 100%cpu that
> I can't kill.  The command that is showed in top is "modprobe -s ac".

Probably due to SMI being disable. Don't know what that module precisely
does when it loops, but it may wait on SMI-backed activity of the
hardware that is now disabled. Try to switch off CONFIG_ACPI_AC in your
config.

> If I run it from the command line it hangs as well.  Latencies are
> however very acceptable when running xeno-test.  I do however see
> some negative values in the test output.
> 
> The config file that I am using currently is the same as the one
> below just with CONFIG_XENO_HW_SMI_ALL.  This seems to give me the
> best latencies.
> 
> Mike
> 

Jan


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