On Tue, May 15, 2012 at 5:41 PM, Merlin Olivier
<Olivier.MERLIN(a)gemalto.com> wrote:
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)
The attachments don't go through the mailing list.
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
The performances on
xwiki.org or
myxwiki.org is usually not bad
(except sometime when there is some specific issue with the server).
xwiki.org has a lot of users and
myxwiki.org a lot of wikis.
Best regards,
Olivier
_______________________________________________
Olivier Merlin
RnD Tuning/profiling community Leader
Tel: + 33.4.42.36.59.87
olivier.merlin@gemalto.com<mailto:frederic.olier-EXTERNAL@gemalto.com>
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Thomas Mortagne