On 09/04/14 16:52, Martin Troxler wrote:
Hi Pier
>$ sudo cyclictest -t5 -p 99 -n 500
gives better values than the -i 500 Option.
Regards
Martin
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Thank You.
Dear Martin
What you write works only with the realtime kernel... ?
We are using the Standard Ubuntu Kernel
The application runs under a Software Interrupt at 1.5 or 2
milliseconds...
we measured that it may have around 100 microseconds variation... ( Do
you call it Jitter ? )
So this is ok for our control application....
Which are the problems that we may have with the standard kernel ?
Do you have a list of them ?
I did not know that the realtime kernel it's a must for etherlab...
When sometimes ago I tried to use the Realtime kernel from the Ubuntu
Repository
the size of the video screen was limited to 1024*768 and we cannot use
the 1920*1080
screen resolution for the Graphic Application and Video that we have.
Also there was another restriction that now I do not recall now....
Do you think that the : Working counter changed to 0/113
( that may happens once every 2 or 3 hours )
it's because we use the standard kernel ?
Is the realtime kernel the only solution ?
Thank you very much...
Best Regards
Pier
--
Perlsoft GmbH
Sennereigasse 27
3900 Brig
Switzerland
Tel. +41977022933
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