On Sat Nov 3 13:14:17 EDT 2012, [email protected] wrote: > On Sat, Nov 03, 2012 at 01:04:15PM -0400, erik quanstrom wrote: > > > > in modern systems, i believe they mean the same thing. > > > > http://en.wikipedia.org/wiki/Paging#Terminology > > > > Sorry, I didn't know you were talking about Windows NT. > > > > memory deduplication? is that true? > > > > http://lwn.net/Articles/454795/ > > hiro was asking if plan 9 deduplicates memory.
perhaps my comment about double-swap/paging was not clear enough. i was considering the hosted os, with some standard vm such as esxi, vbox, xen or whatever as the host. in such a case it makes no sense to me for the hosted os to page/swap as the hypervisor is perfectly capable of doing this itself. in fact, i think having the guest page/swap while the hypervisor is page/swaping is going to tend to make things more difficult because of i/o contention, and the fact that doing i/o tends to temporarly increase memory use. on the other hand, if you want to press plan 9 into service as the hypervisor (has anyone done this?), you are going to need fairly robust swap/pageing capabilities. and if you want to get real utility out of the hypervisor, you're going to need snapshotting and support for network connection redirection as well. - erik
