[etherlab-users] RTAI + e1000e?

[martin troxler]

Hi, 

If you use a e1000(e) with the generic driver, you have to disable the
interrupt throttling of the e1000(e): 
Load the e1000 kernel module with options: 
modprobe e1000e TxIntDelay=0 RxIntDelay=0 RxAbsIntDelay=0
TxAbsIntDelay=0 InterruptThrottleRate=0 

Regards 
Martin

>>> "Dr.-Ing. Wilhelm Hagemeister" <hm at igh-essen.com> 21/9/2011 21:33
>>>
Hello Jordi,

is seems that Intel NIC's are optimized for performance and bandwith
but
not for realtime behavior (which is not really necessary normally). We
experienced that some combinations of kernel version, EtherCat Master
version and NIC don't work properly. Also we see latency issues. I
can't
really describe what the problem is. Mostly it happens like, people
are
reporting frame losses or problems with synchronization with
Intel-NIC's
and problems go away when they change on the same system to a Realtek
chipset.

Anyway we also have systems running well with e100, e1000 and e1000e
so
that does not mean you should not try it....

With kind regards

Wilhelm.

Am 21.09.2011 13:36, schrieb Jordi Blanch Carles:
> Hello Wilhelm,
>
> thank you for your fast answer, we'll take it into account. Could
you
> tell me which kind of problems have you found working with Intel
NICs?
>


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