Matt, I'm not sure what you mean by a "one FOP processing thread per
appserver instance"?

J., I am getting data out of some javabeans in the form of xml, then this
xml is transformed using a stylesheet, then another transformation takes
place to create the xsl:fo and then FOP takes over.  I'll go ahead and try
and profile--you think the bottleneck might be in the transformations and
not in the final rendering?  Do you have a profiler you can recommend?

Thanks very much for the feedback.

Mike Z.

-----Original Message-----
From: Savino, Matt C [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 06, 2002 1:51 PM
Subject: RE: Performance Guidance

I am curently working on a system to only allow one FOP processing thread
per appserver instance. You can search my earlier posts for some
benchmarking results.

Matt Savino

Senior Systems Analyst
Quest Diagnostics Inc.
33608 Ortega Hwy
Building C
San Juan Capistrano, CA 92690
cel - 310-344-0889
pg - 949-452-4566

> -----Original Message-----
> From: J.Pietschmann [mailto:[EMAIL PROTECTED]
> Sent: Thursday, June 06, 2002 1:47 PM
> Subject: Re: Performance Guidance
> Zahigian, Mike wrote:
> > I am using FOP to take a single page of XSL:FO content and 
> convert to PDF.
> > I have embedded FOP in a servlet.  When I have one user 
> requesting a page it
> > takes about 6 or 7 seconds to get the page formatted as 
> PDF.  It seems like
> > each additional simultaneous request pushes the response 
> time by 6 or 7
> > seconds.  So, if 10 users request pages at about the same 
> time, the 10th
> > user gets his page back in about a minute--and this is only 
> one page.  
> > 
> > Is this the performance I should expect?  What the ideal 
> way to handle the
> > rendering process?  Should I create a Rendering object that 
> had a rendering
> > method or should I simply have a class with one static 
> method that renders?
> > Any guidance on how to embed FOP and get better response time is
> > appreciated.
> The design of the embedding hardly matters for performance.
> The complexity of the layout usually matters.
> How much time does FOP need to render your FO from the command
> line? Does the time include the XSL transformation or is it FO
> rendering only? Use the -d switch to get timings.
> Do you use JDK1.3? Is HotSpot enabled? FOP is much slower on
> JDK 1.2 and earlier.
> Try to isolate the steps. Apply a profiler. You might find
> bottlenecks where you'd expect them last.
> In your case, I strongly suspect the bottleneck is data retrieval,
> not FO rendering, 7 seconds for a page sounds too much. You ought
> to get 1-2 pages per second on moderatly dated machines.
> J.Pietschmann

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