On Thu, Feb 04, 2010 at 06:47:15PM +0100, Andrea Arcangeli wrote: > On Thu, Feb 04, 2010 at 08:40:43AM -0500, Rik van Riel wrote: > > I suspect it won't be very many. I have been monitoring > > /proc/meminfo on my system while testing this patch, and > > it is quite typical that the size of the inactive anon > > list does not change for minutes at a time. > > > > In other words, no pages are moved onto or off of the > > inactive anon list for several minutes. That corresponds > > to a very small number of minor faults introduced by my > > patch. > > When there's light VM pressure, ideally there should be zero overhead > caused by the patch. When there is VM pressure this will avoid some > unnecessary I/O which should outweight the minor faults. It should be > a good default behavior.
Agree. But perhaps a module parameter to turn accessed bit emulation off might be handy in the future? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
