Messages in this thread | | | Date | Thu, 6 Aug 2009 17:59:05 +0800 | From | Wu Fengguang <> | Subject | Re: [RFC] respect the referenced bit of KVM guest pages? |
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On Thu, Aug 06, 2009 at 05:59:53PM +0800, Avi Kivity wrote: > On 08/06/2009 12:35 PM, Wu Fengguang wrote: > > On Thu, Aug 06, 2009 at 05:35:59PM +0800, Avi Kivity wrote: > > > >> On 08/06/2009 12:25 PM, Wu Fengguang wrote: > >> > >>>> So you're effectively running a 256M guest on a 128M host? > >>>> > >>>> Do cgroups have private active/inactive lists? > >>>> > >>>> > >>> Yes, and they reuse the same page reclaim routines with the global > >>> LRU lists. > >>> > >>> > >> Then this looks like a bug in the shadow accessed bit handling. > >> > > > > Yes. One question is: why only stack pages hurts if it is a > > general page reclaim problem? > > > > Do we know for a fact that only stack pages suffer, or is it what has > been noticed?
It shall be the first case: "These pages are nearly all stack pages.", Jeff said.
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