Messages in this thread | | | Date | Thu, 13 Aug 2009 11:46:45 -0400 | From | Rik van Riel <> | Subject | Re: [RFC] respect the referenced bit of KVM guest pages? |
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Wu Fengguang wrote: > On Wed, Aug 12, 2009 at 10:31:41PM +0800, Rik van Riel wrote:
>> For zones it is a fixed value, which is available in >> /proc/zoneinfo > > On my 64bit desktop with 4GB memory: > > DMA inactive_ratio: 1 > DMA32 inactive_ratio: 4 > Normal inactive_ratio: 1 > > The biggest zone DMA32 has inactive_ratio=4. But I guess the > referenced bit should not be ignored on this typical desktop > configuration?
We need to ignore the referenced bit on active anon pages on very large systems, but it could indeed be helpful to respect the referenced bit on smaller systems.
I have no idea where the cut-off between them would be.
Maybe at inactive_ratio <= 4 ?
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