Re: NetBSD disk performance on VirtualBox

2018-03-19 Thread maya
On Mon, Mar 19, 2018 at 02:58:06PM +0100, Fekete Zolt?n wrote: > Any setting which influence the test and I didn't apply? yes, need to figure out what to make GNU dd behave the same. It has different defaults.

Re: NetBSD disk performance on VirtualBox

2018-03-19 Thread Martin Husemann
On Mon, Mar 19, 2018 at 12:06:44PM +, 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 inste

Re: NetBSD disk performance on VirtualBox

2018-03-19 Thread Fekete Zoltán
2018-03-19 13:06 időpontban Sad Clouds ezt írta: 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

Re: NetBSD disk performance on VirtualBox

2018-03-19 Thread Sad Clouds
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. On Mon, Mar 19, 2018 at 8:59 AM, Martin H

Re: NetBSD disk performance on VirtualBox

2018-03-19 Thread Martin Husemann
On Mon, Mar 19, 2018 at 08:54:12AM +, Chavdar Ivanov wrote: > I'd be also interested in your setup - on a W10 hosted VBox (latest) on a > fast M.2 disk I get approximately 5 times slower values, on -current amd64, > having disks attached to SATA, SAS and NVMe controllers (almost the same, > the

Re: NetBSD disk performance on VirtualBox

2018-03-19 Thread Chavdar Ivanov
I'd be also interested in your setup - on a W10 hosted VBox (latest) on a fast M.2 disk I get approximately 5 times slower values, on -current amd64, having disks attached to SATA, SAS and NVMe controllers (almost the same, the SAS one is a little slower than the rest, but nowhere near your figures

Re: NetBSD disk performance on VirtualBox

2018-03-19 Thread Martin Husemann
On Sun, Mar 18, 2018 at 03:45:48PM +, Sad Clouds wrote: > Hello, using 'log' or both 'async, log' does not improve things much, > i.e. it's around 30-50 MBytes/sec: > > localhost# mount | grep wd0a > /dev/wd0a on / type ffs (asynchronous, log, local) > > localhost# dd if=/dev/zero of=out bs=1