[PDFBOX-3382] pdf creation very slow

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.2, 2.0.3, 3.0.0 PDFBox
• Fix Version/s: 2.0.3, 3.0.0 PDFBox
• Component/s: FontBox, Writing
• Labels: optimization performance
• Assignee: Tilman Hausherr
• Reporter: kazu
• Created: 15/Jun/16 13:10
• Updated: 25/Mar/17 18:12
• Resolved: 30/Jun/16 17:36

Description

compared to older 1.8.x versions, the new 2.0.x branch is awesomely slow.
benchmarks using a multipage document with few images and many text-lines indiciate a performance penalty of about 1:20 compared with the old 1.8.x branch.

profiling via VisualVM indicates that the new font handling causes this performance drawback:

TrueTypeFont.nameToGid() [31%]
TrueTypeFont.hasGlyph() [23%]
PDFont.getWidth() [16%]
PDType1Font.encode() [9%]

is there any workaround for this? the current setup only creates about 10 PDFs/second compared to over 200/second for the 1.8.x branch...