[Libreoffice-bugs] [Bug 51989] PDF export performance decreased a bit in 3.6

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=51989

--- Comment #5 from Roman Eisele <bugs at eikota.de> 2012-07-12 08:07:54 PDT ---
(In reply to comment #3)
> probably, partly due to the far more better Image resampling, who is slower by
> nature

This is a compelling idea, and if the PDF export performance is slower just for
such reasons, I will not complain, but be happy instead. But is this the *only*
cause of the performance decrease?

To check this, I tried another sample file, a 286 pp. proceedings volume which
contains no (bitmap) images at all, only some tables and much text in English
and German. (I can't attach the file here for copyright reasons and because it
uses commercial .otf fonts which I can' share, sorry!) The results are (with
identical settings):

* LibreOffice 3.5.5.3:        ca. 20 seconds
* Libreoffice 3.6.0.0 beta 3: ca. 40 seconds (!)

IMHO this means that the better image resampling can not be the only source of
the slower performance -- there must have changed something else right in the
export of text.

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