[xep-support] images performance issue

[Jirka Kosek]

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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   Jirka Kosek     e-mail: jirka at kosek.cz     http://www.kosek.cz
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