> On Mon, Dec 01, 2008 at 05:46:48PM +0000, Leslie Newell wrote: >> Is it possible to use EMC with multi-core processors? I see that by >> default the kernel is compiled to only support one processor but what >> would happen if SMP support was compiled in? Would RTAI choke? >> >> As multi-core processors become more prevalent, would it be practical to >> dedicate one core to the realtime stuff and let the other(s) do the >> rest? It seems wasteful but I would have thought it would give very low >> latency. > > I did this a while back on a dual P3 system. It gave excellent > latency. Like you say, you can isolate a CPU so nothing but realtime > tasks run on it. No special support is needed in EMC2; it is just a > kernel and RTAI configuration issue. > > It was quite a job to get everything compiled right. I hope it's > easier now but I wouldn't bet on it. >
I think the main problem is getting a kernel+RTAI combo that works on as many SMP machines as possible. We have packages (not that used as the x86 packages) for x86_64 that are compiled as SMP capable. Maybe we should have a SMP kernel for the x86 hardy users aswell. Regards, Alex ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
