Messages in this thread | | | From | Nick Piggin <> | Subject | Re: [15/17] SLUB: Support virtual fallback via SLAB_VFALLBACK | Date | Tue, 2 Oct 2007 18:37:24 +1000 |
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On Tuesday 02 October 2007 07:01, Christoph Lameter wrote: > On Sat, 29 Sep 2007, Peter Zijlstra wrote: > > On Fri, 2007-09-28 at 11:20 -0700, Christoph Lameter wrote: > > > Really? That means we can no longer even allocate stacks for forking. > > > > I think I'm running with 4k stacks... > > 4k stacks will never fly on an SGI x86_64 NUMA configuration given the > additional data that may be kept on the stack. We are currently > considering to go from 8k to 16k (or even 32k) to make things work. So > having the ability to put the stacks in vmalloc space may be something to > look at.
i386 and x86-64 already used 8K stacks for years and they have never really been much problem before.
They only started failing when contiguous memory is getting used up by other things, _even with_ those anti-frag patches in there.
Bottom line is that you do not use higher order allocations when you do not need them. - 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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