Re: NetBSD disk performance on VirtualBox

On Wed, 21 Mar 2018 06:41:46 +0700 Robert Elz wrote: > Date:Tue, 20 Mar 2018 14:18:31 + > From:Chavdar Ivanov > Message-ID: > > > | Anyway, nothing so

Re: NetBSD disk performance on VirtualBox

Date:Tue, 20 Mar 2018 14:18:31 + From:Chavdar Ivanov Message-ID: | Anyway, nothing so far explains Martin's results being just a tad below | those of Linux and everyone

Re: NetBSD disk performance on VirtualBox

On Tue, 20 Mar 2018, 12:30 Sad Clouds, wrote: > Hello, a few comments on your tests: > > - Reading from /dev/urandom could be a bottleneck, depending on how that > random data is generated. Best to avoid this, if you need random data, try > to use a bench tool that

Re: NetBSD disk performance on VirtualBox

Hello, a few comments on your tests: - Reading from /dev/urandom could be a bottleneck, depending on how that random data is generated. Best to avoid this, if you need random data, try to use a bench tool that can quickly generate dynamic random data. - Writing to ZFS can give all sorts of

Re: NetBSD disk performance on VirtualBox

2018-03-20 00:05 időpontban m...@netbsd.org ezt írta: 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. Ok, I installed a precompiled

Re: NetBSD disk performance on VirtualBox

Well, testing with a file of zeroes is not a very good benchmark - see the result for OmniOS/CE below: ➜ xci dd if=/dev/zero of=out bs=100 count=1000 1000+0 records in 1000+0 records out 10 bytes transferred in 0.685792 secs (1458168149 bytes/sec) So I decided to switch to

Re: NetBSD disk performance on VirtualBox

I ran my tests with our dd and also with /usr/pkg/gnu/bin/dd, supposedly the same or similar enough to the one in Centos; there was no significant difference between the two. The fastest figure came on the system disk when it was attached to an IDE controller with ICH6 chipset. about 180MB/sec.

Re: NetBSD disk performance on VirtualBox

On Mon, 19 Mar 2018 22:44:44 + Chavdar Ivanov wrote: > I managed to get mine to about 180MB/sec, host i/o cache didn't make > much difference, but I switched to ICH9 chipset and ICH6 SATA > controller... Hold on, I just realised my root device is on an IDE > controller, not

Re: NetBSD disk performance on VirtualBox

On Mon, 19 Mar 2018 16:17:33 +0100 Martin Husemann wrote: > 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

Re: NetBSD disk performance on VirtualBox

I managed to get mine to about 180MB/sec, host i/o cache didn't make much difference, but I switched to ICH9 chipset and ICH6 SATA controller... Hold on, I just realised my root device is on an IDE controller, not SATA, which must have been the default setting for NetBSD in VirtualBox. I'll check

Re: NetBSD disk performance on VirtualBox

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

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

Re: NetBSD disk performance on VirtualBox

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

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

Re: NetBSD disk performance on VirtualBox

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, >

Re: NetBSD disk performance on VirtualBox

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

Re: NetBSD disk performance on VirtualBox

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

Re: NetBSD disk performance on VirtualBox

On Sun, 18 Mar 2018 16:05:05 +0100 Martin Husemann wrote: > On Sun, Mar 18, 2018 at 02:08:53PM +, Sad Clouds wrote: > > Hello, I tend to use dd to estimate I/O throughput > > > > dd if=/dev/zero of=out bs=1m count=1000 > > Ok, so it is about in-filesystem writes. > >

Re: NetBSD disk performance on VirtualBox

On Sun, 18 Mar 2018 09:44:49 -0500 D'Arcy Cain wrote: > On 03/18/2018 08:41 AM, Sad Clouds wrote: > > Hello, are there known I/O performance issues with NetBSD on > > VirtualBox? I've setup two similar VMs, one Linux, another one > > NetBSD, both use SATA virtual controller

Re: NetBSD disk performance on VirtualBox

On Sun, 18 Mar 2018 15:38:40 +0100 Kamil Rytarowski wrote: > On 18.03.2018 14:41, Sad Clouds wrote: > > Hello, are there known I/O performance issues with NetBSD on > > VirtualBox? I've setup two similar VMs, one Linux, another one > > NetBSD, both use SATA virtual controller with

Re: NetBSD disk performance on VirtualBox

On Sun, 18 Mar 2018 15:00:40 +0100 Martin Husemann wrote: > On Sun, Mar 18, 2018 at 01:41:46PM +, Sad Clouds wrote: > > Hello, are there known I/O performance issues with NetBSD on > > VirtualBox? I've setup two similar VMs, one Linux, another one > > NetBSD, both use

Re: NetBSD disk performance on VirtualBox

On Sun, Mar 18, 2018 at 02:08:53PM +, Sad Clouds wrote: > Hello, I tend to use dd to estimate I/O throughput > > dd if=/dev/zero of=out bs=1m count=1000 Ok, so it is about in-filesystem writes. Assuming you use ffs, you could test with the "log" or the "async" and no special mount option.

Re: NetBSD disk performance on VirtualBox

On 18.03.2018 15:41, Sad Clouds wrote: > On Sun, 18 Mar 2018 15:38:40 +0100 > Kamil Rytarowski wrote: > >> On 18.03.2018 14:41, Sad Clouds wrote: >>> Hello, are there known I/O performance issues with NetBSD on >>> VirtualBox? I've setup two similar VMs, one Linux, another one >>>

Re: NetBSD disk performance on VirtualBox

On 03/18/2018 08:41 AM, Sad Clouds wrote: > Hello, are there known I/O performance issues with NetBSD on VirtualBox? > I've setup two similar VMs, one Linux, another one NetBSD, both use > SATA virtual controller with one disk. > > Writing 1GB file sequentially: > - Linux gives 425MB/sec, So

Re: NetBSD disk performance on VirtualBox

On 18.03.2018 14:41, Sad Clouds wrote: > Hello, are there known I/O performance issues with NetBSD on VirtualBox? > I've setup two similar VMs, one Linux, another one NetBSD, both use > SATA virtual controller with one disk. > > Writing 1GB file sequentially: > - Linux gives 425MB/sec, > - NetBSD

Re: NetBSD disk performance on VirtualBox

On Sun, Mar 18, 2018 at 01:41:46PM +, Sad Clouds wrote: > Hello, are there known I/O performance issues with NetBSD on VirtualBox? > I've setup two similar VMs, one Linux, another one NetBSD, both use > SATA virtual controller with one disk. > > Writing 1GB file sequentially: > - Linux gives

NetBSD disk performance on VirtualBox

Hello, are there known I/O performance issues with NetBSD on VirtualBox? I've setup two similar VMs, one Linux, another one NetBSD, both use SATA virtual controller with one disk. Writing 1GB file sequentially: - Linux gives 425MB/sec, - NetBSD gives 27MB/sec. Repeated this several times, and