this report has been filed here: https://bugs.edge.launchpad.net/ubuntu/+source/poppler/+bug/565592 "When using the mouse to navigate through PDFs, it works great. But PgUp and PgDn sometimes doesn't work at all for some PDFs" pdf is: http://launchpadlibrarian.net/44626731/Barton2007.pdf attached is the valgrind log
I don't see any valgrind log
Created attachment 36345 [details] valgrind log attaching it again, sorry.
I'm not sure I understand what the problem is, but the document works perfectly for me.
The document is really slow to render on poppler 0.12.4 , is easy to reproduce if you scroll trough the pages and wait for those to be rendered. Thanks!.
Ok, I tried with evince and didn't notice the slowness thanks to the evince page cache :-P The problem is not cairo backend specific, since most of the time is spent in GfxCalRGBColorSpace::getRGB(). With commit 65c14073a3b1035ca5fe3bd6667abd315272841e I've reduced the time to render page 4 from more than 5 seconds to around 3 seconds, so it's still a bit slow.
I've added a new optimization that axed the time from 1200ms to 600ms on my machine
With current master page 4 takes 1,8 secs for me :-)
I'm going to say we fixed this a while back, unless someone really thinks we're still being unreasonable slow in this file and reopens it.
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