On Tue, May 6, 2008 at 10:11 AM, Benjamin ZORES
<[EMAIL PROTECTED]> wrote:
> Hi,
>
>  I'm currently running an x86_32 SMP system and facing some issues with
>  periodic tasks.
>  I'd like to get a bit more information on a few assumptions I've made.
>
>  Quick sum-up of my setup:
>  - adeos-ipipe-2.6.23-i386-1.12-03
>  - xenomai-2.4.3.patch
>  - Core 2 Duo x86_32 running in SMP

Why not x86_64 ?

>  - Linux 2.6.23.17
>  - Timer frequency: 1000 Hz
>  - Tick-less mode activated (CONFIG_NO_HZ)
>  - Xenomai Periodic Timing enabled (CONFIG_XENO_OPT_TIMING_PERIODIC)
>  - tasks are kernel-based.
>
>  I'm trying to schedule a periodic task each 8ms and I'm running into
>  period miss
>  (loosing from 5 up to 75, which is quite A LOT). The problem however
>  doesn't appear
>  on UP system (or at least when booting the kernel with maxcpus=1 ).

Have you run the latency test to know if you have no hardware issue ?

-- 
 Gilles

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