Hello,

On the xwiki  3.2, we have decided to use the virtual xwiki  (multi-tenant) 
feature as it should be better for scalability and performance
http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Virtualization


"Each wiki has its own database schema, thus allowing for a complete data 
separation between the different wikis in the same instance.

The main advantage of multi-tenancy is performance optimization."
Problem:
The main wiki has a relative good level of performance - with a response time 
around 2.5 second to browse a page
So we are in the xwiki database
But when we are in a virtual wiki (another schema ) - the performance are very 
poor.
The average response time is around 5 seconds  per page !!! So at list 2 times 
slower.

We are using MySQL and glassfish 3.1 - and we have done tuning on the MySQL 
database and glassfish.

We have used a profiling tool and see that the request send to the virtual 
environment are raising a big amount of exception ...
The problem is not on the database part (even if they are many SQL calls to 
visualize only one page)
The problem seems really to be on the virtual environment configuration OR in a 
file corruption ...

I have attached the exception list . (exception_list.xls)
>From this is it possible to know if we have an installation issue ??

Does someone have experience of very good performance with xwiki  ? ( response 
time #1second per page)
In that case

Best regards,
Olivier





_______________________________________________
Olivier Merlin
RnD Tuning/profiling community Leader
Tel: + 33.4.42.36.59.87

olivier.mer...@gemalto.com<mailto:frederic.olier-exter...@gemalto.com>
_______________________________________________

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