Hopefully this is not too bad advice... I've found the performance with cache=none to be unacceptable as well. I'm using cache=writeback. Of course you'll get much better performance if you remove Linux/KVM. :)
On Thu, Jan 8, 2015 at 3:21 PM, Jorge Gabriel Lopez Paramount <jorge.lopez.paramo...@googlemail.com> wrote: > Hi all, > > A few months ago I tried to install OpenBSD 5.5 in a KVM virtual machine > running Linux in an amd64 computer. First tried to install the i386 version > since my Linux virtual machines are i686 and was painfully slow, so much > that I almost decided to not use OpenBSD. Then I tried with the amd64 > version and ran blazingly fast, was so impressed that I'm here. > > Time passed and installed some i386 virtual machines running in atom chips > without issues and so far have been running fine so I forgot the issue, but > last week started to upgrade them to 5.6 and was again painfully slow, one > hour to upgrade each one. And since the slow part of upgrading was at > untarring and the LED of the disk was blinking like crazy I supposed it was > some issue with the virtual hard disk. > > Now that I know more about OpenBSD tried again to install the same 5.5 > version in the same amd64 computer, but this time using the virtio drivers, > and in less than 5 minutes installed a new OpenBSD server with no issues at > all. As reference this is the kvm command I used: > > kvm -vnc :15 -m 256 -name openbsd -pidfile /qemu/OpenBSD/OpenBSD.pid -k es > -net nic,macaddr=52:54:00:12:34:84,model=virtio -net tap,ifname=tap17 -drive > file=/dev/eliseos/qemu-004,cache=none,if=virtio -cdrom > /software/OpenBSD/5.5/i386/install55.iso -boot d -daemonize > > I would like to share this because I have read in many places about hard > disk slowliness with OpenBSD, verly likely dissapointing new users when in > fact OpenBSD is very good. > > -- > Best regards, > Jorge Lopez. > > > > > > ---------------------------------------------------------------- > This message was sent using IMP, the Internet Messaging Program.
