Re: [xep-support] Different performance on different systems

From: Chris Bowditch <>
Date: Fri Sep 02 2005 - 05:53:38 PDT wrote:

> Hi,
> I am facing the following situation: When XEP renders a FO source into a
> PDF target, I am facing a bad performance on one system and an
> acceptable performance on the another system. The two systems are using
> different hardware, software and network infrastructure. However the FO
> source, the XEP version 3.8.4 server edition are the same. (Suprisingly)
> the hardware performance features on the system with the bad performance
> are better.
> I measured
> - 120 seconds of waiting time for the system with bad performance and
> - 9 seconds of waiting time for the system with acceptable performance
> for executing the code marked by ***HERE*** in the output (snippet)
> generated by XEP.
> ...
> (generate [1][2][3][4][5][6][7][8][9][10][11][12][13][14]***HERE***))
> ...
> In order to find out the reason for the different behaviour, I would
> like to know what the XEP renderer is doing at this point of progress.
> Did anyone face similar problems or does anyone have a hint how to
> analyze this problem best?
> Thank you very much in advance!

What sort of environment are you running XEP in? Is it running inside a
Webapp, from commandline or an embedded java application? We found XEP
doesn't scale across multiple CPUS in a multi-threaded java application.
Others have reported the same on this list. Adding more CPUs actually
makes the performance worse!!!!!!

Perhaps the machine which you say is superior has 2 CPUs versus 1 for
the machine which yields better performance.


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Received on Fri Sep 2 06:17:33 2005

This archive was generated by hypermail 2.1.8 : Fri Sep 02 2005 - 06:17:33 PDT