At 03:25 18-07-2001, Weiqi Gao wrote:
>We did some playing around with a simple FOP servlet that does
>XHTML->XSL-FO->PDF using Xalan and FOP and come away with the following
>findings:
>
>1. It uses quite a bit of memory. While running around 20-30 concurrent
>users, each generating a set of four PDFs ranging from 2 to 5 pages five
>times each, the servlet engine memory usage is about 110MB.
>
>2. It uses quite a bit of CPU. While running the above test, the CPU is
>about 50% with 10 users, 70% with 20 users, and over 80% with 30 users.
>
>3. It takes quite a bit of time to do the generation. The minimum
>generation time for the four documents are from 1 to 4 seconds (the 4
>seconds one is 5 pages with 13 tables with various cell colors and
>border styles). In the 30 user test, the average time are from 20 to 40
>seconds, and maximum well over 2 minutes.
How much of that load is from Xalan and how much from FOP?
It might be instructive to construct a similar applet that uses Xalan to do
XHTML->XSL-FO, and serve those FOs (labeled as application/xml) to the
browser. If a significant portion of the load is due to Xalan, a reduction
might be possible by using a different XSLT engine such as SAXON. (SAXON
is also more compliant than Xalan.)
-Chris
--
Christopher R. Maden, XML Consultant
DTDs/schemas - conversion - ebooks - publishing - Web - B2B - training
<URL: http://crism.maden.org/consulting/ >
PGP Fingerprint: BBA6 4085 DED0 E176 D6D4 5DFC AC52 F825 AFEC 58DA
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, email: [EMAIL PROTECTED]
