Messages in this thread | | | Date | Mon, 30 Aug 2010 22:30:49 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH] vmscan: prevent background aging of anon page in no swap system |
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On 08/30/2010 09:23 PM, Minchan Kim wrote:
> Ying's one and mine both has a same effect. > Only difference happens swap is full. My version maintains old > behavior but Ying's one changes the behavior. I admit swap full is > rare event but I hoped not changed old behavior if we doesn't find any > problem. > If kswapd does aging when swap full happens, is it a problem?
It may be a good thing, since swap will often be freed again (when something is swapped in, or exits).
Having some more anonymous pages sit on the inactive list gives them a chance to get used again, potentially giving us a better chance of preserving the working set when swap is full or near full a lot of the time.
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