Bug 91250

Summary:	Poppler extremely slow to render this PDF file [2]
Product:	poppler	Reporter:	S. <sb56637>
Component:	cairo backend	Assignee:	poppler-bugs <poppler-bugs>
Status:	RESOLVED MOVED	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

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

Comment 3 GitLab Migration User 2018-08-20 21:54:13 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/poppler/poppler/issues/118.

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