Re: [xep-support] images performance issue

From: Volodymyr Mykhailyk <>
Date: Wed Sep 27 2006 - 06:54:51 PDT

During this test we also perform monitoring of system params.
With graphic
CPU load 1%-10%
Free memory about 200mb

Without graphic
CPU load 50%-100%
Lot of free memory.

I am not sure this because of memory, we also run this build on Laptop,
with 512Mb and slower processor. It takes about 2min to generate the
same PDF.

Probably the memory on this machine can be slower, but I can't imagine
what speed it should have to increase build time from 30 seconds to
Thats why I am asking what can cause such slowdown.

Jirka Kosek wrote:
> Volodymyr Mykhailyk wrote:
>> Hi,
>> We run Ant build which performs two XSLT transformations and renders 
>> XSL FO into PDF... PDF is a 24 pages booklet with a lot of graphics 
>> in various formats (TIFF, JPG, SVG). Result PDF about 3-5Mb, Fo file 
>> - 300Kb.
>> XSLT transformation takes several second (2-10s).
>> PC #1 local machine
>> P4 - 2.4GHz, 1GB RAM, IDE HDD
>> Fedora Core 3, JVM 1.4.2_02, Ant 1.6.5
>> PC #2 dedicated server (there is no other proceses except this Xep task)
>> P4 - 2.4GHz, 512MB RAM, SCSI HDD
>> Fedora Core 5, JVM 1.5.0_08, Ant 1.6.5
>> Build time with graphics:
>> PC#1 - 35-37 seconds
>> PC#2 - 15-30 minutes(!)
>> Build time without graphics (images folder is renamed, so XEP prints 
>> error messages about missing images to console):
>> PC#1 - 14 seconds
>> PC#2 - 8 seconds
>> Question is, why in PC#2 build with graphic takes so much time 
>> (15-30min)? What might be a reason?
> I suppose that Java is short of memory on second machine, starts 
> swapping to disk, and then, you know...
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Received on Wed Sep 27 07:01:11 2006

This archive was generated by hypermail 2.1.8 : Wed Sep 27 2006 - 07:01:12 PDT