[fedora-virt] virtio block driver performance versus ide
Richard W.M. Jones
rjones at redhat.com
Wed Oct 21 15:01:35 UTC 2009
On Wed, Oct 21, 2009 at 08:58:10AM -0600, Thomas S Hatch wrote:
> Wow, the rotational change greatly speeds up my vms, as much as 15 fold.
>
> At the risk of sounding like a complete n00b, is there a way to persistently
> change the settings in /sys? I am of course familiar with the sysctl.conf
> for /proc/sys. Or is this something that should be changed at the driver
> level?
It has apparently already been changed (see the new kernels in that
Bugzilla entry).
In any case, you can't make the change permanent, but you can add the
commands to /etc/rc.local so they get executed at each guest boot
which has just about the same effect.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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