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From "Sridhar (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (PDFBOX-3133) PDFBox 2.0.0-RC2 and earlier 2.0.0 SNAPSHOT Versions print performance is poor with systems having low RAM < 3GB and lower number of fonts.
Date Thu, 03 Dec 2015 17:08:11 GMT

    [ https://issues.apache.org/jira/browse/PDFBOX-3133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15037975#comment-15037975
] 

Sridhar edited comment on PDFBOX-3133 at 12/3/15 5:07 PM:
----------------------------------------------------------

Here below is the configuration, where PDFToImage took about 20 sec
Processor: Intel® Atom™ CPU 330 @1.60GHz 1.60 GHz
Ram: 1.99 GB
32-bit operating system

As per Task Bar ( Visual inspection during execution )
CPU Usage: 19% - 23% ( Observed this in all tabs)
Physical Memory: 57%

Will get you the performance indices.
In 1.99 GB machine, no hardware is rated and re rating did not work "ended with error message
could not rate"

Since we are using applets, the above is not production server, it is low end production like
client machine as clients are expected to have low end systems.




was (Author: sridhar):
Here below is the configuration, where PDFToImage took about 20 sec
Processor: Intel® Atom™ CPU 330 @1.60GHz 1.60 GHz
Ram: 1.99 GB
32-bit operating system

As per Task Bar ( Visual inspection during execution )
CPU Usage: 19% - 23% ( Observed this in all tabs)
Physical Memory: 57%

Will get you the performance indices.

Since we are using applets, the above is not production server, it is low end production like
client machine as clients are expected to have low end systems.



> PDFBox 2.0.0-RC2 and earlier 2.0.0 SNAPSHOT Versions print performance is poor with systems
having low RAM < 3GB and lower number of fonts.
> -------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: PDFBOX-3133
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3133
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: PDModel
>    Affects Versions: 2.0.0
>         Environment: MS Windows Systems with low RAM < 3GB and number of fonts were
less < 592 (or if desired fonts in PDF to be printed are not available in local system
) 
>            Reporter: Sridhar
>            Assignee: John Hewson
>              Labels: performance
>             Fix For: 2.0.0
>
>
> PDFBox 2.0.0-RC1, SNAPSHOTS and RC2 versions print takes 15+ seconds.
> Steps to reproduce
> -------------------------- 
> Use Windows System with < 3 GB RAM
> Use Systems with less number of fonts or without specific fonts in PDF file  to be printed.
> Printing PDF file 
> Took 14 to 20 seconds in system with 3 GB RAM which had 522 foints
> Took 24 to 34 seconds in system with 2 GB RAM which had 90 fonts
> Took only 2.5 seconds in system with 8 GB RAM which had 1025 fonts. 
> Doubt
> -------- 
> Not browsed the code, but following is the doubt as causing performance issue.
> Though the code caches fonts by storing fonts in local .pdfbox.cache file first time
and caching fonts for subsequent times.
> Not clear whether the code updates the pdfbox fonts cache file if new fonts are found
in new PDF file to be printed, while printing subsequent times. 
> If the fonts in PDF file to be printed is not available in the .pdfbox.cache file stored
in local system/local system what is the behaviour?  Will the code download fonts and update
cache for subsequent times or is it limited by fonts available in local system?  Looks like
later is the case and performance got hit either due to RAM or not constantly updating fonts
cache or due to un availability of fonts in local system.



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