Messages in this thread | | | From | KOSAKI Motohiro <> | Subject | Re: [PATCH 6/8] Stop reclaim quickly when the task reclaimed enough lots pages | Date | Tue, 15 Dec 2009 08:51:11 +0900 (JST) |
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> On 12/14/2009 07:31 AM, KOSAKI Motohiro wrote: > > > > From latency view, There isn't any reason shrink_zones() continue to > > reclaim another zone's page if the task reclaimed enough lots pages. > > IIRC there is one reason - keeping equal pageout pressure > between zones. > > However, it may be enough if just kswapd keeps evening out > the pressure, now that we limit the number of concurrent > direct reclaimers in the system. > > Since kswapd does not use shrink_zones ...
Sure. That's exactly my point. plus, balance_pgdat() scan only one node. then zone balancing is meaingfull. but shrink_zones() scan all zone in all node. we don't need inter node balancing. it's vmscan's buisiness.
> > Signed-off-by: KOSAKI Motohiro<kosaki.motohiro@jp.fujitsu.com> > > Reviewed-by: Rik van Riel <riel@redhat.com>
Thanks.
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