Aege,

Em 15/10/2010 17:42, Aage Johansen escreveu:

> Markus Ostenried wrote:
> <<
> On Thu, Oct 14, 2010 at 11:39, Nick Upson<nick.upson@...> wrote:
> > I will shortly be setting up firebird CS 2.1 on a virtual machine for
> > the first time, I've always used 'real' machines up to this point
> >
> > any tips or things to watch out for?
>
> Not that I know of. I've installed Firebird on more virtual than
> physical machines, using Debian or Windows as OS and it works fine for
> me.
> >>
>
> Have you noticed any change in I/O speed with virtual machines
> (compared to 'real' machines)?
> We moved some databases to a VM and observed some decrease in I/O
> performance, but since both machine and disks are different I'm not
> sure where the "problem" is. IIRC, this was gbak performance (Fb/2.1).
>

One costumer installed vmware on a machine and it is much more slow
regarding I/O speed than the bare metal. They even give up to run
firebird on the VM, but it was some time ago, I am far from a VM expert,
so could not say if it is misconfigured or not, on the time I
experienced this, Sean told me that the version they used was not the
ideal, sorry but I can't remember the name/version of the vmware, perhps
you could find it on the list history.

I use Virtual box on my notebook, and I feel that disk is a lot slower
than the physcal machine, again... I have no idea if it could be tuned
in some way, it's just a vanilla instalattion.

see you !