[Opensim-dev] Observations on XMLRPC timeouts

[Nebadon Izumi]

My results are virtually  identical to what Melanie says above, my testing
has all occured on OSGrid.  One thing i can tell you is these results are
very difficult to reproduce under controlled situation, one thing that is
key to really bring these results to the forefront is chaos, an uncontrolled
totally open environment such as OSgrid is really suffering when linux is in
the mix.  Windows on .NET seems unphased by most things thrown at it.   I
can tell you it should not matter  what version of linux or what version of
mono you run, results are consistent almost across the board.    I only
suggest we throw caution to the wind with controlled lab environment lab
results, as many who run in very tightly controlled environments dont seem
to see exactly the same issues.

Nebadon

On Fri, Jun 13, 2008 at 3:47 AM, Mariusz Nowostawski <
mariusz at nowostawski.org> wrote:

> Melanie wrote:
> > I have tested OpenSim in 5 different combinations today, in the same
> > grid, same UGAIM.
> >
> > This is a grid that is affected by a number of issues related to
> > grid comms.
> >
> > Tested:
> >
> > linux - mono
> > Observed numerous failures of MapBlockQuery and other XMLRPC calls.
> > Also, inflated memmory footprint.
> >
> > windows - cygwin - mono
> > Application did not run. Regions did not load, communications did
> > not work
> >
> > windows - native - mono
> > Observed numerous failures of MapBlockQuery and other XMLRPC calls.
> >
> > windows - native - .NET
> > No observed issues.
> >
> > windows - cygwin - .NET
> > No observed issues
> >
> >  From this, i conclude that the XMLRPC issue is a mono issue, while
> > the memory bloat is a Linux issue
>
> Hi Melanie,
>
> We are running similar tests with setups on Windows, Solaris and Linux
> in our lab. To be able to compare apples with apples, would you be able
> to provide more details of what exact configuration of your linux/mono
> and windows/.net configs were? In particular, what exact mono version
> have you used. with what exact garbage collector, what was the linux
> kernel, and how was the exact memory usage between different setups?
>
> I think it would be valuable to establish the same common UGAIM setup
> with a single common region, that different people would be able to use
> for testing (a sort of like an agreed benchmark). There are many groups
> looking into opensim performance and reliability but we have no way of
> comparing, replicating or even re-evaluating the results, because many
> factors contribute to a particular server behaviour, memory usage and
> performance.
> If you could use one of the publicly available regions that we could use
> too, than we could cross-validate our results, and try to pinpoint
> exactly where the problems are, and how we can fix them. Our group would
> be more than happy to help investigating where the problems are exactly.
>
> --
> best regards
> Mariusz
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>
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