[
https://issues.apache.org/jira/browse/PDFBOX-3103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tilman Hausherr updated PDFBOX-3103:
------------------------------------
Description:
When printing a PDF document (4 pages, 177KB, link below) using command
{code}
java -jar pdfbox-app-2.0.0-RC1.jar PrintPDF test.pdf
{code}
processing of the document before print takes about 15 seconds on system with
Core i5-4670 processor.
Most of the time is wasted on reading font files from system. The reason is
that the font is read byte by byte in an unbuffered manner. The defective code
is located in class {{org.apache.fontbox.ttf.RAFDataStream}}, where new
instance of {{RandomAccessFile}} is created without buffering.
I prepared a buffer wrapper over {{RandomAccessFile}} that adds buffering to
{{RandomAccessFile}}. Use of the buffer in {{RAFDataStream}} shortens printing
time *5 times*, i.e., printing takes 3 seconds instead of 15s.
The wrapper class is augmented version of a class released at
https://code.google.com/p/jmzreader/wiki/BufferedRandomAccessFile (Apache
License 2.0).
Please integrate provided fix with original source of FontBox.
PDF document and fix are available at http://1drv.ms/1NsKPFc
was:
When printing a PDF document (4 pages, 177KB, link below) using command
{code}
java -jar pdfbox-app-2.0.0-RC1.jar PrintPDF test.pdf
{code}
processing of the document before print takes about 15 seconds on system with
Core i5-4670 processor.
Most of the time is wasted on reading font files from system. The reason is
that the font is read byte by byte in an unbuffered manner. The defective code
is located in class {{org.apache.fontbox.ttf.RADDataStream}}, where new
instance of {{RandomAccessFile}} is created without buffering.
I prepared a buffer wrapper over {{RandomAccessFile}} that adds buffering to
{{RandomAccessFile}}. Use of the buffer in {{RAFDataStream}} shortens printing
time *5 times*, i.e., printing takes 3 seconds instead of 15s.
The wrapper class is augmented version of a class released at
https://code.google.com/p/jmzreader/wiki/BufferedRandomAccessFile (Apache
License 2.0).
Please integrate provided fix with original source of FontBox.
PDF document and fix are available at http://1drv.ms/1NsKPFc
> Slow performance when printing PDF (fix provided)
> -------------------------------------------------
>
> Key: PDFBOX-3103
> URL: https://issues.apache.org/jira/browse/PDFBOX-3103
> Project: PDFBox
> Issue Type: Improvement
> Components: FontBox
> Affects Versions: 2.0.0
> Reporter: Tomasz Pawlak
> Labels: easyfix, easytest, patch, performance
> Attachments: RAFDataStream.java, test.pdf
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> When printing a PDF document (4 pages, 177KB, link below) using command
> {code}
> java -jar pdfbox-app-2.0.0-RC1.jar PrintPDF test.pdf
> {code}
> processing of the document before print takes about 15 seconds on system with
> Core i5-4670 processor.
> Most of the time is wasted on reading font files from system. The reason is
> that the font is read byte by byte in an unbuffered manner. The defective
> code is located in class {{org.apache.fontbox.ttf.RAFDataStream}}, where new
> instance of {{RandomAccessFile}} is created without buffering.
> I prepared a buffer wrapper over {{RandomAccessFile}} that adds buffering to
> {{RandomAccessFile}}. Use of the buffer in {{RAFDataStream}} shortens
> printing time *5 times*, i.e., printing takes 3 seconds instead of 15s.
> The wrapper class is augmented version of a class released at
> https://code.google.com/p/jmzreader/wiki/BufferedRandomAccessFile (Apache
> License 2.0).
> Please integrate provided fix with original source of FontBox.
> PDF document and fix are available at http://1drv.ms/1NsKPFc
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