Bug#702699: okular: extreme slow down of search in version of wheezy compared to sqeezy
Package: okular
Version: 4:4.8.4-3+b1
Severity: normal
Tags: upstream
Dear Maintainer,
Searching (aka. 'Find') a larger pdf-document (1326 pages 11 MB) with a short search string from beginning of the document to
the end used to take 22 seconds on my laptop with the squeezy version of okular (okular 0.10... debian 4:4.4.5).
After a dist upgrade to debian wheezy (with okular 0.14.3 debian 4:4.8.4) i noticed the same search slowed down to somewhat
over a minute. That's a slowdown by almost Faktor three.
Shouldn't new software generaly run faster?
It's anoying as I use searching larger pdfs rather frequently.
I noticed (using xosview) the old okular was running the search on a single cpu core while the newer
one is using both cpu cores I have.
This means the total used cpu time increased by factor 6! I understand that parallelizing an algorithm some tratdeoffs have
to be made, but factor 6 is absolutely unacceptable.
I understand that on an 8 core the new paralleliced search might require less wallclock time,
but I *CANNOT* accept 'by an 8 core' as a bugfix.
The problem might very well reside in one of okulars library packages.
Please report this problem upstream.
Thanx
Thomas Zoschke
-- System Information:
Debian Release: 7.0
APT prefers testing-updates
APT policy: (500, 'testing-updates'), (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages okular depends on:
ii kde-runtime 4:4.8.4-2
ii libc6 2.13-38
ii libfreetype6 2.4.9-1.1
ii libjpeg8 8d-1
ii libkdecore5 4:4.8.4-4
ii libkdeui5 4:4.8.4-4
ii libkio5 4:4.8.4-4
ii libkparts4 4:4.8.4-4
ii libkprintutils4 4:4.8.4-4
ii libkpty4 4:4.8.4-4
ii libokularcore1 4:4.8.4-3+b1
ii libphonon4 4:4.6.0.0-3
ii libpoppler-qt4-3 0.18.4-5
ii libqca2 2.0.3-4
ii libqimageblitz4 1:0.0.6-4
ii libqt4-dbus 4:4.8.2+dfsg-11
ii libqt4-svg 4:4.8.2+dfsg-11
ii libqt4-xml 4:4.8.2+dfsg-11
ii libqtcore4 4:4.8.2+dfsg-11
ii libqtgui4 4:4.8.2+dfsg-11
ii libsolid4 4:4.8.4-4
ii libspectre1 0.2.7-2
ii libstdc++6 4.7.2-5
ii phonon 4:4.6.0.0-3
ii zlib1g 1:1.2.7.dfsg-13
okular recommends no packages.
Versions of packages okular suggests:
ii ghostscript 9.05~dfsg-6.3
pn jovie <none>
pn okular-extra-backends <none>
ii poppler-data 0.4.5-10
ii texlive-binaries 2012.20120628-4
pn unrar <none>
-- no debconf information
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