[Okular-devel] [okular] [Bug 338030] New: PDF rendering extremely slow

[Pascal Niklaus]

https://bugs.kde.org/show_bug.cgi?id=338030

            Bug ID: 338030
           Summary: PDF rendering extremely slow
           Product: okular
           Version: 0.19.2
          Platform: Other
               URL: http://www.open.ac.uk/science/biosci/personalpages/j.s
                    ilvertown/pdfs/Silvertown%20Niche%20Review%202004.pdf
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: pascal+kde at niklaus.org

When displaying various PDFs, I experience rendering delays in the range of 10
seconds when scrolling to the next page. 

Memory usage in Okular is set to "aggressive".

In the example above, opening takes 20 seconds on a quite fast computer. With
xpdf, the file opens and displays instantly. 

For some other PDFs, scrolling to the next page also takes something in the
range of 10-20 seconds, or longer.

Reproducible: Always

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