On Sat, Aug 11, 2018 at 04:02:44PM +0100, Sad Clouds wrote: > Hi, so you're saying that with ucb_direct read/write on mounted file > system should also speed things up compared to NetBSD-8? I see terrible > I/O performance with NetBSD running as a VM on a VirtualBox, just > reading/writing regular files is quite slow compared to Linux VMs on > the same hardware. I've never been able to figure out the reasons for > it, maybe Linux has better integration with VirtualBox and better > optimisations.
We had a similar discussion on some list a while back and I did some timings. My values were close to the ones others cited for Linux and others said their NetBSD timings were a lot worse than mine. I use SATA and NVMe emulations in virtual box, and mount all filesystems on the emulated SATA drives with "log". Don't think I had to tweak anything special on the host or in virtual box. Martin
