[Opensim-dev] RFC: Changing default script engine to xengine

[John Sheridan]

I've come to the same conclusion as Kyle.  Both XEngine and .NET 
seemingly perform the same functions, but XEngine just does it better 
with less CPU and memory usage.  I would opt to have it enabled by 
default. 

Thanks, :)

John Sheridan / Orion Pseudo

Kyle "G" wrote:
> In our testing with Xengine, especially on sim startup, it never pegs the CPU on our Hyper-V VM's. DotNetEngine however does peg the CPU on startup causing much longer delays and lag for other sims on the VM. For this reason alone there is no choice for us but Xengine.
> Kyle G
> www.reactiongrid.com 
>
>
> -----Original Message-----
> From: opensim-dev-bounces at lists.berlios.de [mailto:opensim-dev-bounces at lists.berlios.de] On Behalf Of Sean Dague
> Sent: Monday, December 08, 2008 6:23 PM
> To: opensim-dev at lists.berlios.de
> Subject: [Opensim-dev] RFC: Changing default script engine to xengine
>
> This is a request for comments on changing the default script engine to
> xengine.  There was a thread about this a couple of months ago in which
> the resolution was to wait until 0.6 was released.
>
> Here are the pros - cons as I see it:
>
> Cons
> * a change like this, no matter how prepared we are, can cause some
> temporary breaks in people's environments
>
> Pros
> * xengine uses less memory than dotnet engine
> * xengine uses less cpu than dotnet engine -
> http://xyzzyxyzzy.net/2008/11/07/a-brief-look-at-dotnetengine-vs-xengine/
> * xengine doesn't do the event drop which causes lots of bug reports
> like this one: http://opensimulator.org/mantis/view.php?id=2777
>
> I'm sure there are other pros and cons, and I'm happy for others to
> throw them out here.  I've been telling every IBM internal team to use
> XEngine for the past 6 months, and every one say a performance and
> stability increase after they made the change.
>
> I think that making it the default out of the box will reduce a lot of
> issues that new users are having with OpenSim, and it definitely along
> the lines of trying to make as much work right out of the box as we can.
>
> Opinions?  Comments?  I'd like to try to achieve consensus over the next
> couple of days so we could make such a change.
>
> 	-Sean
>
>