* Avi Kivity <avi@xxxxxxxxxx> [2010-06-16 14:39:02]: > >We're talking about an environment which we're always trying to > >optimize. Imagine that we're always trying to consolidate guests on to > >smaller numbers of hosts. We're effectively in a state where we > >_always_ want new guests. > > If this came at no cost to the guests, you'd be right. But at some > point guest performance will be hit by this, so the advantage gained > from freeing memory will be balanced by the disadvantage. > > Also, memory is not the only resource. At some point you become cpu > bound; at that point freeing memory doesn't help and in fact may > increase your cpu load. > We'll probably need control over other resources as well, but IMHO memory is the most precious because it is non-renewable. -- Three Cheers, Balbir -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
