Bug 91250 - Poppler extremely slow to render this PDF file [2]
Summary: Poppler extremely slow to render this PDF file [2]
Status: NEW
Alias: None
Product: poppler
Classification: Unclassified
Component: cairo backend (show other bugs)
Version: unspecified
Hardware: Other Linux (All)
: medium normal
Assignee: poppler-bugs
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Reported: 2015-07-06 20:02 UTC by S.
Modified: 2015-07-06 20:20 UTC (History)
0 users

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Description S. 2015-07-06 20:02:49 UTC
Hello,

Certain PDFs opened in Evince or Atril using the Poppler backend are extremely slow to render, to the point of being unusable. This is on a very fast Thinkpad laptop with a quad-core processor and an SSD. The same PDFs render instantly using a Windows PDF reader (http://www.tracker-software.com/product/pdf-xchange-viewer) (running under Wine!!).

This file is only about 2MB, but it takes many seconds to render each page:
https://freekidsbooks.org/download/103

On the other hand, some long, complex PDFs with images render quickly with Poppler, like this one:
http://www.pwc.com/gx/en/paying-taxes/pdf/pwc-paying-taxes-2015-high-resolution.pdf

Thanks for looking into this.
Comment 1 S. 2015-07-06 20:03:28 UTC
Reference bug #91248
Comment 2 Albert Astals Cid 2015-07-06 20:20:12 UTC
This one may be hitting a particulary slow spot in the cairo renderer since page 3 takes 500 ms to render in Splash and 1800 ms to render in Cairo.

Assigning to Cairo since there's probably something to improve here.

Times with i7-2670QM CPU @ 2.20GHz


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