Messages in this thread |  | | | From | Jesse Barnes <> | | Subject | Re: [Lse-tech] Re: [RFC PATCH] scheduler: Dynamic sched_domains | | Date | Fri, 8 Oct 2004 09:43:21 -0700 |
On Thursday, October 7, 2004 11:08 pm, Nick Piggin wrote: > Takayoshi Kochi wrote: > > Yup, if SD_NODES_PER_DOMAIN is set to 4, our 32-way TX-7 have > > two disjoint domains ;( > > (though the current default is 6 for ia64...) > > > > I think the default configuration of the scheduler domains should be > > as identical to its real hardware topology as possible, and should > > modify the default only when necessary (e.g. for Altix). > > That is the idea. Unfortunately the ia64 modifications are ia64 wide. > I don't think it should be too hard to make it sn2 only.
The NEC and Altix machines both use a SLIT table to describe the machine layout, so it should be possible to build them correctly w/o special case code (I hope). The question is how big to make them, but if that's runtime changeable, then no big deal. Like I said, the main thing missing from my changes is a system wide domain, but I think John has some ideas about that.
Jesse
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