On Mon, Jul 30, 2012 at 11:25:51AM +0930, Rusty Russell wrote: > I consider this approach a half-way step. Quick attempts on my laptop > and I couldn't find a case where the bio path was a loss, but in theory > if the host wasn't doing any reordering and it was a slow device, you'd > want the guest to do so. > > I'm not sure if current qemu can be configured to do such a thing?
The host kernel will do the I/O scheduling for you unless you explicitly disable it. And we should be able to assume an administrator will only disable it when they have a reason for it - if not they'll get worse performance for non-virtualized workloads as well. _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
