Bug 93827 - PDF slow to render
Summary: PDF slow to render
Alias: None
Product: poppler
Classification: Unclassified
Component: general (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: poppler-bugs
QA Contact:
Depends on:
Reported: 2016-01-22 20:56 UTC by Antoine
Modified: 2018-08-20 21:49 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Description Antoine 2016-01-22 20:56:39 UTC
When opening the following document (a simple set of slides from a Coursera course), evince spends a bunch seconds churning CPU, and then also often from going from a slide to another:


AFAICT this is with poppler 0.30.0.
Comment 1 Jakub Alba 2016-08-02 17:42:49 UTC
The Linux perf tool shows me that there is a lot of time spent in cmsEvalToneCurveFloat() function when rendering this document. If you disable CMS in CMake (-DENABLE_CMS=OFF), the problem disappears. If you switch to lcms1 (instead of lcms2; -DENABLE_CMS=lcms1), it's slower than without CMS, but faster than with lcms2. I'm not familiar with this library, so unfortunatelly I can't write any patches which would fix it with lcms2.
Comment 2 GitLab Migration User 2018-08-20 21:49:22 UTC
-- GitLab Migration Automatic Message --

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

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