[Mono-list] Sites Using Mono

Gonzalo Paniagua Javier gonzalo.mono at gmail.com
Sun Nov 22 23:45:05 EST 2009

On Sat, 2009-11-21 at 13:00 +0100, Christian Prochnow wrote:
> Hi sirmak,
> i'm sorry, but i must say that Mono is simply not ready to be used on
> high-load sites. We tried using it on a medium loaded site and sadly had
> to switch to Windows Server and Microsoft .NET.

I have personally tested mod_mono/xsp2 running a Large application. In
fact during one of the tests, if you tried to reach the (Large) site you
had 1 in 16 chances of getting the page served by mono.

There were memory problems that we addressed and the size of the
threadpool had to be tuned based on the results we got for this
application, but in the end the performance and memory use were

> With Mono the server quickly ran out of memory, which has unknown causes
> (like stated on the Mono website). Using the auto restart mode was not
> an option because it produces a big lag. Maybe this issue will become
> obsolete with the new GC.
> Also the in-process session state server seems to have issues. We have
> seen duplicate session id's on different clients, but we could not
> safely reproduce this issue. (could be a synchronisation issue).

If there were questions related to those problems or bug reports, I
didn't see them and I apologize. But if there were not, you should
consider helping the Mono community by asking the questions or
submitting bug reports if you have problems like these. We all know that
the current GC is not ideal, but there are ways to mitigate the impact
it has on memory usage.


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