Details

    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 2.0.0
    • Fix Version/s: 2.0.0
    • Component/s: Rendering
    • Labels:
      None

      Description

      I have a PDF from a customer which contains a lot of calls of SetNonStrokingColorSpace and SetStrokingColorSpace. Each time, an embedded color profile resource is loaded via ICC_Profile.getInstance(InputStream). I have attempted to cache the result in PDResources.java as shown in the attached patch. For this particular PDF, this change improves the performance of PDFToImage from 27 seconds down to 5 seconds (the PDF has two pages). I cannot share the customer PDF, so I have attempted to find a similar free one. Unfortunately, in my test suite, I did not find anything with a comparable improvement. The best example I found is in the attached PDF. There the improvement is from 4.9 seconds without caching to 4.1 with caching.

        Attachments

        1. PDResources.java.patch
          2 kB
          Petr Slaby
        2. 000435.pdf
          825 kB
          Petr Slaby

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              • Assignee:
                jahewson John Hewson
                Reporter:
                pslabycz Petr Slaby
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                • Created:
                  Updated:
                  Resolved: