[Xenomai-help] Re: high latency every 8 seconds

[Theo Veenker <Theo.Veenker@domain.hid>]

Jan Kiszka wrote:
> Theo Veenker wrote:
>> Hi all,
>>
>> I'm installing xenomai 2.2.5 (kernel 2.6.17.14) on a number of
> 
> When starting new, pick something new, i.e. 2.3 right now. Only if you
> have good reasons, staying at older versions is recommended.

I would love to, but I couldn't get my software running with 2.3.
I had to convert (a month ago) my software from RTLinux to Xenomai
having only a few days for it. I have a kernel module and an app
that talks to it. I use the posix skin. But with 2.3 apparently
I had to load posixio and something (forgot) manually, but I just
couldn't get these loaded. Since time was running out I decided
to stay with 2.2.5 for the time being (unfortunately).

> 
>> systems (MSI 945P, Intel P4 3Ghz). My kernel runs fine on several
>> other/older systems, but on the new systems there is something going
>> on every 8 seconds. See output of latency test below. What could
>> this be? Is this an SMI effect?
> 
> Is CONFIG_XENO_HW_SMI_WORKAROUND selected? What does the kernel output
> tell you about if it's working? Do you have an ICH7 chipset on your
> board? Would be another reason to update Xenomai (2.3 takes care of it,
> 2.2.x doesn't)... :)
> 
> If this all doesn't help, have a look at this tool:
> 
> http://www.xenomai.org/index.php/I-pipe:Tracer
> 
> In any case, please give a feedback on the outcome.

Thanks. I will.

Theo