Messages in this thread |  | | | Date | Tue, 29 May 2012 12:46:09 -0400 | | From | Rik van Riel <> | | Subject | Re: [PATCH 13/35] autonuma: add page structure fields |
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On 05/29/2012 12:38 PM, Andrea Arcangeli wrote: > On Tue, May 29, 2012 at 03:16:25PM +0200, Peter Zijlstra wrote: >> 24 bytes per page.. or ~0.6% of memory gone. This is far too great a >> price to pay. > > I don't think it's too great, memcg uses for half of that and yet > nobody is booting with cgroup_disable=memory even on not-NUMA servers > with less RAM.
Not any more.
Ever since the memcg naturalization work by Johannes, a page is only ever on one LRU list and the memcg memory overhead is gone.
> But I'm all for experimenting. It's just not something I had the time > to try yet. I will certainly love to see how it performs by reducing > the max size of the list. I totally agree it's a good idea to try it > out, and I don't exclude it will work fine, but it's not obvious it's > worth the memory saving.
That's fair enough.
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