Re: ARINC653

["Simon Martin" <smartin@milliways.cl>]

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Thanks Dario,


>>  smartin@smartin-xen:~/projects/trio/xen/pv499$ sudo xl cpupool-list
>>  Name CPUs Sched Active Domain count
>>  Pool-0 3 credit y 1
>>  pv499 1 arinc653 y 1
>>
>Ok, which pcpus are in each pool? In theory, it shouldn't matter, but,
>you know...
>
Pool-0 has pcpu 1, 2 and 3
pv499 has pcpu 0.

>>  So unless I am doing something silly it looks like I will have to go
>>  to RT-Xen to get better timings. For the moment I'm going to leave
>>  this and go on to getting more of my operating system working.
>>
>Well, RT-Xen is a great project, but it's mostly, if not all, about
>scheduling. I mean, all they do is introducing two new schedulers (with
>a couple of operational mode in each), and that's it... There is 
>nothing
>there being done for reducing latency or jitter.
Thanks for the pointer. As my tests have shown, changing the scheduler 
does not really alter the behaviour.

>
>I think, we'd better off (as soon as, as you said, you have more pieces
>in place), trying to figure out what is causing the behavior you're
>seeing and workaround/fix/amend it!
I agree.

>
>It's a busy period, with the 4.4 release, etc., but, as repeatedly 
>said,
>I'm up for helping with this, if help is needed!
Thanks. This is something that is going to take a while to get sorted so 
I'll definitely be plugging until way after 4.4 is done and dusted.

Regards.

>

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