I have doubts about using Cocoon+FOP to serve medium to large sized PDF
reports. I was doing more tests and noted that my servers needs 40 to
60Mb of RAM per concurrent request to generated a 40 pages PDF report. I
think that the fo2pdf serializer is the responsible for this memory
usage, but i may be wrong.
Someone has a clue of where to look to optimize this. I have tested
JInfonet JReport Enterprise server and it doesn't use this amounts of
memory (It is expensive and I will serve only a few reports).
Robert Marcano wrote:
> I haven't used Cocoon2 for about three months, and for the first time
> I need to generate a PDF file with data retrieved using SQL. My
> question is related to memory usage when using large xml structures.
>
> I generated a xml file using XSP and the ESQL stylesheets (a table
> with 1336 records) in order to try to isolate the problem source, this
> static file was saved and I copied it multiple times with diferent
> names to my web application in order to transform them with a XSL
> styleshhet to the XSL:FO namespace (a simple table with 3 columns),
> and serialized it with "fopdf"
>
> This is the sitemap fragment used:
>
> <map:match pattern="*.pdf">
> <map:generate src="{1}.xml"/>
> <map:transform src="stylesheets/prr2fo.xsl"/>
> <map:serialize type="fo2pdf"/>
> </map:match>
>
> I replaced the pipelines in cocoon.xconf with the NonCaching
> alternatives. When i access the first pdf file, it is generated and
> the heap grow to about 60Mb of RAM, when I access another one it grows
> near 40Mb, and it continues to grow with each new pdf request. The
> free JVM memory always remains low (around 10 or 15 Mb) so the memory
> is not reclaimed with garbage collection.
>
> I don't know what may be causing my problem, but if I'm not using
> caching pipelines, this Cocoon2 behavior is not normal.
>
> Note: I'm using Cocoon2rc1
>
> Thanks in advance
>
>
>
>
--
Robert Marcano (office: [EMAIL PROTECTED], personal: [EMAIL PROTECTED])
System Architect
IBM OS/2, VisualAge C++, Java, Smalltalk certified
aol/netscape screen id: robmv
jabber id: [EMAIL PROTECTED]
msn messenger id: [EMAIL PROTECTED]
icq id: 101913663
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, email: [EMAIL PROTECTED]
