On 11/03/2017 17:33, Thomas Fjellstrom wrote: >> If the answer to both questions is no, then QEMU uses a thread pool for >> disk I/O and those threads could be scheduled on any host CPU. > But should they be pegging 4 or more cores, when the host can do the same work > with a single core? I don't mind it spreading work out. But using 4x the cpu > time to do the same work is a bit much. I would expect 2x, but not really more than that. Which threads are doing all the work, beyond the VCPU thread and the host I/O thread? Paolo
