[xep-support] java settings ?

[Alexander Peshkov]

Hello Jack,

Java memory setting are critical for the overall performance. By
default, the amount of memory available to Java VM is limited to 64MB
regardless of the RAM size of the host machine. For a machine with <N>
megabytes of RAM, reasonable defaults are <N - 64> for the upper heap
size limit (-Xmx) and <N/2> (or less) for the lower limit (-Xms). For
instance, the following yields effective memory usage on a computer
with 512 MB of RAM: -Xms128M -Xmx400M
You may also try to turn off validation (using switch -Dcom.renderx.xep.VALIDATION=false)
to speed up processing and reduce memory consumption.

There are small chances that performance degradation caused by Java VM
instability. Which version of Java (and OS) are you using?

Best regards,
Alexander Peshkov                             mailto:peshkov at renderx.com
RenderX


JB> Hello,
JB> i am trying to use xep to generate a 1000 page pdf file.
JB> when I load a part of 600 pages (18 MB in fo), no tables or whatsoever,
JB> it takes about 15 minutes to create a pdf file. 
JB> The full 1000 pages however (34 MB) slows down and nearly stops with no 
JB> apparent reason after 250 pages.

JB> What are the recommended java heap and/or memory settings and how
JB> can I speed xep up for larger volumes like these.

JB> Jack Broeren

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