On Fri, Feb 10, 2012 at 10:08:12PM +0900, Takuya Yoshikawa wrote: > Avi Kivity <avi@xxxxxxxxxx> wrote: > > > On 02/09/2012 04:23 PM, Avi Kivity wrote: > > > > BTW do we really need fast slot creation/destruction? > > > > > > Not really, but it's good to have infrastructure that copes with > > > different workloads. If the patches keep the code simple I think it's a > > > good thing to have. > > My patch is pretty simple. > > > To qualify - taking several tens of milliseconds is out of the question > > as some workloads grind to a halt. But it doesn't need to be incredibly > > fast. > > I think the problem is not how long it takes to create/invalidate a slot > but following faults and shadow pages reconstruction. The problem which is immediatelly visible is kvm_set_mem performance. > Similar to mmu shrinker problem we discussed before. > > E.g. users will not expect sudden latency induced by pci hotplug. > > Takuya -- 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
