Performance of RT-patch on PowerPC

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Hello all,

As I understood from several emails the arch/ppc branch is not supported by the RT-patch, and also will not because of missing functionality. My BSP (MVME3100, PPC 8540) is based on the ppc architecture however, but I do need hard realtime performance.

As far as I know there are a couple of choices I have:
- Port the BSP to the powerpc architecture branch
- Use Xenomai.

I know that Xenomai runs on the ppc-branch, so this would be my first choice at this moment. But I like to keep my options open, so I am also looking at porting the BSP.

Before I start on the port of the BSP I would like to know what the status of the RT-patch on PowerPC is. How good and stable does the patch run on PowerPC, and how good is the real time performance on the PowerPC?

Also I like to know how the RT-patch and Xenomai compare. I did see some measurements and discussions from a couple of years back between Ingo and Kristian Benoit. The RT patch and Xenomai had comparable results, but how is the current situation? Are the current results substantial better for one of these or for both, or are they still on the same level?

Kind regards,
   Johan Borkhuis
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