Re: [PATCH] top level scheduler domain for ia64

From: Nick Piggin <>
Date: 2004-10-20 10:02:04
Jesse Barnes wrote:
> Some have noticed that the overlapping sched domains code doesn't quite work 
> as intended (it results in disjoint domains on some machines), and that a top 
> level, machine spanning domain is needed.  This patch from John Hawkes adds 
> it to the ia64 code.  This allows processes to run on all CPUs in large 
> systems, though balancing is limited.  It should go to Linus soon now 
> otherwise large systems will only have ~16p (depending on topology) usable by 
> the scheduler.  I sanity checked it on a small system after rediffing John's 
> original, and he's done some testing on very large systems.
> Nick, can you buy off on the sched.c change?  Alternatively, do you want to 
> send that fix separately John?

No, that looks good. It is a pretty trivial change so I think its harmless
to go in with this patch.

I'd consider increasing balancing rates for the SD_NODE_INIT domains after
this patch goes in too.

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Received on Tue Oct 19 20:13:05 2004

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