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Hi,
I've got an issue with pdf preview in dolphin when the cursor is kept on a pdf file. It tries to generate a preview and I can see that there various instance of ghostscript resulting in high CPU usage (99%).
Here is an example for a 45ko pdf file:
ps aux|grep gs
manu 12745 5.2 1.9 38736 20344 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12746 5.3 1.9 38736 20344 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12750 5.2 1.9 38736 20344 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12753 5.1 1.9 38736 20344 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12756 5.2 1.9 38736 20344 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12760 4.4 2.8 47860 29472 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12764 4.3 2.3 43036 24628 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12768 4.1 2.3 43036 24620 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12771 4.4 2.3 43036 24620 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12775 4.0 2.3 43036 24604 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12777 3.7 2.3 42748 24256 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12783 4.0 2.3 42612 24160 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12785 3.8 2.3 42612 24080 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12787 4.2 2.3 42472 24012 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12790 3.8 2.3 42472 23968 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12795 4.2 2.3 42472 23876 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12797 3.7 2.2 42288 23540 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12799 3.5 2.3 43780 24632 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12801 4.0 2.1 42304 21852 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12802 3.3 1.8 37476 18704 ? RN 09:46 0:00 gs -sDEVICE=png16m -sOutputFile=- -dSAFER -dPARANOIDSAFER -dNOPAUSE -dFirstPage=1 -dLastPage=1 -q - /home/manu/PDF /hamprn.pdf -c showpage -c quit
manu 12805 0.0 0.0 3324 848 pts/0 S+ 09:46 0:00 grep gs
Well that's 20 identical instances and I got 99% CPU usage lasting about 10 seconds. For a bigger pdf, it shurely last much more time so that I generally have to kill dolphin but ghostscript instance are not killed and I have to kill them next!
Here are the version of kdebase (containing dolphin) and ghostscript:
pacman -Q|grep kdeb
kdebase 4.1.3-1
kdebase-runtime 4.1.3-1
kdebase-workspace 4.1.3-1
[09:50][manu@compal:~/PDF ]$ pacman -Q|grep ghost
ghostscript 8.63-3
I think (not 100% shure) it was not not happening some times ago with an older dolphin version.
Am I the only one expriencing this problem?
By the way My CPU is a pentium dothan 1.5 GHz
Last edited by manouchk (2009-05-23 06:23:47)
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You can send this info to the KDE Bugtracker http://bugs.kde.org (related to this bug: https://bugs.kde.org/show_bug.cgi?id=170819 )
Darío Andrés
KDE BugSquad Team and Developer
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It looks like the problem has been solved.
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