RE: [xsl] Performance Problem Question: Web Container (Tomcat) vs. Console excecution

["Andrew Welch" <ajwelch@xxxxxxxxxxxxxxx>]

> I am using Saxon 6.5.3 and I am seeing a huge performance
> difference transforming the same input file once via console
> and then within a web container, here Tomcat 5.
>
> I wonder if there is something I can fine tune to get the
> same performance seen in a console window when running within
> a web container.
>
> What happens is the following:
>
> We have an application that retrieves XML data from the
> backend and transforms it with XSLT to different output formats.
>
> If I have huge XML input my web application has to wait about
> 25 seconds for a transformation.  I have captured the XML
> data and saved it in a file.  I then run from command line
> the same transformation with Saxons -t option to see that the
> transformation here only takes 1.5 seconds.
>
> The XML nicely formatted has 20,464 lines and its size is
> 853,587 bytes.
>
> The 1.5 seconds in this extreme case is acceptable and I
> would be fine with it.  But then I have the same execution
> within the web container and get the 25 seconds which is a major drag.
>
> Is there a general explanation for that or recommendations
> what could be altered to achieve a better performance?

Make more memory available to Tomcat - use the command line switches Xms
and Xms, for example:

java -Xms500M -Xmx500M will give Tomcat 500 megabytes to play with from
the start.

cheers
andrew