[Qemu-devel] Re: [RFC][PATCH 1/3] Linux/Guest unmapped page cache control

2010-11-03 Thread Christoph Lameter
On Wed, 3 Nov 2010, Balbir Singh wrote: > > > +#define UNMAPPED_PAGE_RATIO 16 > > > > Maybe come up with a scheme that allows better configuration of the > > mininum? I think in some setting we may want an absolute limit and in > > other a fraction of something (total zone size or working set?) >

[Qemu-devel] Re: [RFC][PATCH 1/3] Linux/Guest unmapped page cache control

2010-11-03 Thread Christoph Lameter
On Fri, 29 Oct 2010, Balbir Singh wrote: > A lot of the code is borrowed from zone_reclaim_mode logic for > __zone_reclaim(). One might argue that the with ballooning and > KSM this feature is not very useful, but even with ballooning, Interesting use of zone reclaim. I am having a difficult time