Messages in this thread | | | Date | Fri, 22 Oct 2004 13:35:27 +1000 | From | Nick Piggin <> | Subject | Re: ZONE_PADDING wastes 4 bytes of the new cacheline |
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Andrew Morton wrote: > Nick Piggin <nickpiggin@yahoo.com.au> wrote: > >>Andrew Morton wrote: >>
>>I think they probably should be turned on. A system with a gig of ram >>shouldn't be able to use up all of ZONE_DMA on pagecache. It seems like >>a small price to pay... same goes for very big highmem systems and ZONE_NORMAL. > > > Problem is, how much lower zone memory do you reserve? If someone is > really getting hit by this in real life then the answer for their workload > is probably "lots". If they are not getting hit then the answer is "none". >
Yeah you might be right... although the ZONE_NORMAL can still be used for other things like slab caches.
> Any halfway setting will screw everyone. > >
I guess what we really need to do is find someone who is getting hit by it. Andrea do you have any pointers? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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