Messages in this thread | | | Date | Sun, 12 Jun 2005 17:48:25 +0200 | From | Philippe Gerum <> | Subject | Re: PREEMPT_RT vs ADEOS: the numbers, part 1 |
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Kristian Benoit wrote: > On Sat, 2005-06-11 at 02:15 -0700, Sven-Thorsten Dietrich wrote: > >>Its a good start, and its excellent that its being looked at. Thank >>you >>guys very much for taking the time to compare these 2 very different >>systems. > > > Youre welcome ! > > >>I think the comparison should absolutely compare identical community >>kernels. The comparison between two different release candidates is >>questionable. rc2 to rc4 doesn't seem like much, after all, how much >>code could go into a release candidate. (diff | wc -l) > > > I agree with that, but as the results show, there does'nt seems to be > much difference impact the numbers in the tested field. > > >>Also, I question testing -rc code in the first place, except for >>regression purposes. > > > I tested the -rc code in orther to be able to compare the patched > kernels against theird own source. > > >>How does that effort compare for porting ADEOS code? If several weeks >>of >>work are invested in a comparison of rc2 to rc4, how much additional >>work is needed to bring Adeos up to the base for the current RT >>kernel? >
It has already been done using 2.6.12-rc2/x86 + RT-V0.7.44-03 a few weeks ago. Since it was the first time such merge was attempted, it took me a week to get a functional patch which could run a complex "client" OS such as RTAI over it. Now that the infrastructure is in place, I guess that the task should be simpler, since hopefully, I now better understand the implications of having PREEMPT_RT into the kernel codebase.
> > Philippe, I think that question is youre ! >
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