[Xenomai] cpu with one core only

Ran Shalit ranshalit at gmail.com
Sun Feb 5 11:55:07 CET 2017


On Sat, Feb 4, 2017 at 12:10 PM, Philippe Gerum <rpm at xenomai.org> wrote:
> On 02/04/2017 09:19 AM, Ran Shalit wrote:
>> Hello,
>>
>> It is said in documentation:
>>
>> "The key issue is with the number of CPU cores actually running
>> real-time threads and receiving interrupts from real-time sources, not
>> with the overall number of cores on line on the target hardware.
>> Because the Cobalt co-kernel does not share any lock with the regular
>> Linux kernel when dealing with real-time activities, a 16-way server
>> pinning such activities on not more than four of the available cores
>> would still deliver good performances in a Cobalt-based dual kernel
>> configuration."
>>
>> We plan to use xenomai,
>> but the cpu (Atom) is only a single core.
>>
>> Can a single core still gives good results with xenomai ?
>>
>
> Yes. There is nothing in the excerpt above which might suggest the
> opposite btw.
>

Hi,

Do you think it is correct to assume that adding cores will result in
a (probably) smaller latency ?

Thank you for the time,
Ran

> --
> Philippe.



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