<div dir="ltr">I don't have nearly as much experience or expertise with optimizing OpenSim as some of the folks who have already posted, but we did a fair bit of performance testing at UC trying to decide which approach was better, and in my experience the virtual machine route just didn't perform as well as running on physical hardware.<div>
<br></div><div>For something like a personal sandbox, or a small community grid where you don't expect much concurrency, it probably would work just fine. For a full on grid hosting many projects or people, I personally wouldn't go with a vm route.</div>
<div><br></div><div>- Chris</div><div><br></div><div><br></div><div><div>Chris M. Collins (Avatar: Fleep Tuque)</div><div>Center for Simulations & Virtual Environments Research (UCSIM)</div><div>UCIT Research & Development, Innovation & Partnerships</div>
<div>UC Office of Information Technologies </div><div>University of Cincinnati</div><div>400 University Hall</div><div>PO Box 210658</div><div>Cincinnati, OH 45221-0658</div><div><a href="mailto:chris.collins@uc.edu">chris.collins@uc.edu</a></div>
<div>(513) 556-3018</div><div><br></div><div><a href="http://ucsim.uc.edu">http://ucsim.uc.edu</a></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Feb 21, 2014 at 6:56 AM, R.Gunther <span dir="ltr"><<a href="mailto:rigun@rigutech.nl" target="_blank">rigun@rigutech.nl</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Only tried opensim in virtualbox (on
windows :O ) with opensuse as guest.<br>
But the biggest problem i see is the hdd speed. maby not enough
cpu resources. assigned 2-3 cores.<br>
But it where a bit more laggy. but linux is not the best choice
for opensim anyway, so it maby could be mono to.<div><div class="h5"><br>
<br>
On 2014-02-21 07:37, John Sheridan wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
If you're looking to run your own hypervisor I'd suggest something
called Proxmox. Its open source / linux based and allows you to
create both openvz and kvm containers via a nifty web interface.
Their website is <a href="https://pve.proxmox.com" target="_blank">https://pve.proxmox.com</a><br>
<br>
<br>
<div>On 02/21/2014 12:24 AM, Dahlia
Trimble wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>
<div>I've used OpenSimulator in a variety of virtual
machines, from KVM to OpenVZ to VirtualBox to EC2. In
general performance is less than when running in bare
hardware but everything usually works. I've seen some
issues with timer accuracy in some virtual machines in the
past and had to compile a custom linux kernel to get
around it, but I think recent virtualization technology
has probably fixed this. Some technologies like OpenVZ I
found very difficult to work with in general and I prefer
to stick with the KVM style approach where the host OS
kernel is set up to allow a "closer to the metal"
virtualization.<br>
<br>
</div>
I think virtual machines are good for lower performance
installations where fewer avatars and scripts are expected.
and bare metal should be used where higher performance is
needed.<br>
<br>
</div>
Often hosting companies will oversell and you may get a lot
less performance than you would expect from their advertised
specifications. If performance is poor with one company, try
others. The cheapest deal is usually far from the best.<br>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Thu, Feb 20, 2014 at 2:48 PM,
Justin Clark-Casey <span dir="ltr"><<a href="mailto:jjustincc@googlemail.com" target="_blank">jjustincc@googlemail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I've
seen OpenSimulator run under different virtual machines
(Xen and EC2). Back a few years ago, there was a very odd
issue when using EC2 where the simulator process wouldn't
certain start context switching millions of times and
freeze out all other processes, though that may have been
a mono issue rather than EC2.<br>
<br>
Other than that, it appears to work just fine as long as
you give it sufficient CPU resources, as is the case when
running on bare metal.
<div>
<div><br>
<br>
On 20/02/14 21:19, <a href="mailto:dogwomble@exemail.com.au" target="_blank">dogwomble@exemail.com.au</a> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all<br>
<br>
I wad wondering if anyone had much experience with
running OpenSim under a<br>
virtual machine? I'm interested in finding out what
sort of performance<br>
can be expected from running in that sort of
environment and how far it<br>
can be pushed without too many issues.<br>
<br>
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<span><font color="#888888"> -- <br>
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OSVW Consulting<br>
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