On Wed, 14 Nov 2012 23:20:13 +0000 Alan Cox <a...@lxorguk.ukuu.org.uk> wrote:
> > I'm still a bit concerned over the possibility that some workloads will > > cause a high-frequency free/alloc/memset cycle on that huge zero page. > > We'll see how it goes... > > That is easy enough to fix - we can delay the freeing by a random time or > until memory pressure is applied. > The current code does the latter, by freeing the page via a "slab"-shrinker callback. But I do suspect that with the right combination of use/unuse and memory pressure, we could still get into the high-frequency scenario. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
