Dear FOP developers,
I'm not a committer (I've sent few patches, though :), so I don't get a
official vote, but as the member of the X-Smiles project, I would really
like to see continued support for Java 1.1.
One of our target platforms is Open Source Java platform Kaffe, which is
roughly Java 1.1.8 compatible. We are currently able to run FOP 0.20.1 on
Kaffe using our own derivation of AWTRenderer.
So unofficial -1 on dropping jdk 1.1 support :)
Mikko Honkala
X-Smiles http://www.x-smiles.org/
> -----Original Message-----
> From: Keiron Liddle [mailto:[EMAIL PROTECTED]]
> Sent: 21. syyskuuta 2001 11:36
> To: [EMAIL PROTECTED]
> Subject: Performance and java 1.1
>
>
> Hi All,
>
> I have been doing some performance testing so we can get an idea of how
> things might be improving (or getting worse) with changes to the code.
> There are three types of tests. I have used 6 fo documents that are
> generated 500 times.
> - for each document a new jvm is started, so 3000 documents in 3000 jvm's
> in serial (about 344m)
> - use only one jvm for all documents and create them all in serial (about
> 57m)
> - use one jvm and a thread for each document, each thread then does that
> document 500 times (a long time)
>
> The actual numbers will depend on the documents size, complexity and
> inclusion of certain elements such as graphics. The threaded test
> will also
> depend on how many threads are using fop at the same time. This is mainly
> to give a general idea.
>
> Some recent changes have improved the times by about 1 - 2% but one change
> that I have tried has made about a 60% improvement with the threaded test.
> This is by simply using HashMap instead of Hashtable. This is very
> significant for cocoon and others who may be using fop in a threaded
> environment. The time is changed from being twice as slow as serial to
> faster than serial.
>
> So the question is: can we drop java 1.1 support and use better data
> structures?
>
>
> These numbers are for 6 documents 8 times each.
> --------------
> With Hashtable
> 6 documents x 8
>
> One JVM in serial
> user 1m2.040s
> user 1m2.560s
>
> Threaded
> user 1m54.780s
> user 1m56.580s
>
> ---------------
> With HashMap
>
> One JVM in serial
> user 0m59.260s
>
> Threaded
> user 0m44.780s
> user 0m45.660s
> user 0m45.700s
>
> This is the user time using unix "time" which is actual processor time for
> the process.
>
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