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  1. FOP
  2. FOP-2860

BreakingAlgorithm causes high memory consumption

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Critical
    • Resolution: Unresolved
    • Affects Version/s: 2.3
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      when a single element (e.g. <fo:block>) contains a sufficiently large amount of text, the fo-to-pdf transformation causes very high memory consumption.

      For instance, transforming a document with <fo:block> containing 1.5 million characters (~1.5Mb test-1500000.fo) requires about 3Gb of RAM.

      The heapdump shows 27.5 million org.apache.fop.layoutmgr.BreakingAlgorithm.KnuthNode (~2.6Gb).

      We start observing this issue, having about 300 thousand characters in a single element (test-300000.fo). But the high memory consumption isn't observed when processing 250 thousand characters (test-250000.fo).

        Attachments

        1. test-300000.fo
          296 kB
          Raman Katsora
        2. test-250000.fo
          247 kB
          Raman Katsora
        3. test-1500000.fo
          1.43 MB
          Raman Katsora
        4. image-2019-04-16-10-07-53-502.png
          137 kB
          Raman Katsora

          Activity

            People

            • Assignee:
              Unassigned
              Reporter:
              Raman_Katsora Raman Katsora
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              Dates

              • Created:
                Updated: