On Mon, Mar 19, 2018 at 12:06:44PM +0000, Sad Clouds wrote: > Hello, which virtual controller do you use in VirtualBox and do you have > "Use Host I/O Cache" selected on that controller? If yes, then you need to > disable it before running I/O tests, otherwise it caches loads of data in > RAM instead of sending it to disk.
I am not sure it makes sense to benchmark the host IO performance in this context ;-) However: I have the default settings, PIIX4. This is netbsd-8 GENERIC, as of a few days ago. Turning off the host IO cache makes no measurable difference for me. Martin
