linux-kernel - RE: [RFC] respect the referenced bit of KVM guest pages?

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Message-ID: <9EECC02A4CC333418C00A85D21E893260184183339@azsmsx502.amr.corp.intel.com>
Date:	Mon, 31 Aug 2009 13:06:09 -0700
From:	"Dike, Jeffrey G" <jeffrey.g.dike@...el.com>
To:	Rik van Riel <riel@...hat.com>
CC:	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	"Wu, Fengguang" <fengguang.wu@...el.com>,
	Avi Kivity <avi@...hat.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	"Yu, Wilfred" <wilfred.yu@...el.com>,
	"Kleen, Andi" <andi.kleen@...el.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Mel Gorman <mel@....ul.ie>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Subject: RE: [RFC] respect the referenced bit of KVM guest pages?

> This will be because the VM does not start aging pages
> from the active to the inactive list unless there is
> some memory pressure.

Which is the reason I gave the VM a puny amount of memory.  We know the thing is under memory pressure because I've been complaining about page discards.  I didn't collect that data on this run, but I'll do it again to make sure.

					Jeff

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