You are not logged in.

#1 2013-03-04 15:04:20

battlepanic
Member
Registered: 2009-08-22
Posts: 71

MuPDF version 1.2 is much slower

After upgrading mupdf from version 1.1 to 1.2, I have noticed that scrolling and panning across a document using the mouse is significantly slower.  It sometimes takes upwards of 10 seconds for the document to completely scroll to the desired position.  Interestingly, the issue is worse if I click and drag the mouse at a slower speed.

Resizing the mupdf window suffers from a similar lag.  It takes much longer for the document to be recentered in the window as compared to version 1.1.

Keyboard scrolling in mupdf using the hjkl keys appears unaffected.

Has anyone else run into this?

Offline

#2 2013-03-04 20:53:26

Army
Member
Registered: 2007-12-07
Posts: 1,784

Re: MuPDF version 1.2 is much slower

Yes, saw that too. Best thing to do is file a bugreport upstream, because this cannot be an intended behavior.

Offline

#3 2013-03-05 23:03:02

Doctor Colossus
Member
Registered: 2012-08-26
Posts: 16

Re: MuPDF version 1.2 is much slower

Confirmed. I filed this bug report upstream:
http://bugs.ghostscript.com/show_bug.cgi?id=693679

Offline

#4 2013-03-06 00:31:23

battlepanic
Member
Registered: 2009-08-22
Posts: 71

Re: MuPDF version 1.2 is much slower

Doctor Colossus wrote:

Confirmed. I filed this bug report upstream:
http://bugs.ghostscript.com/show_bug.cgi?id=693679

Nice.  I just went to the MuPDF Bugzilla to do the very same thing, but noticed your report first.  Thank you.

Offline

#5 2013-03-07 14:50:54

Doctor Colossus
Member
Registered: 2012-08-26
Posts: 16

Re: MuPDF version 1.2 is much slower

I had manually downgraded back to 1.1, but just accidentally upgraded back to 1.2 during a full system update and am no longer having the problem. Indeed, some 'smooth' scrolling effect has been implemented and now seems to be working well and snappily, for me at least. Because I my installed version is now 1.2-1, I don't think mupdf has been upgraded in the community repository (though I'm too hurried to double-check at this moment). Maybe the problem had been caused by some dependency which just receieved an update. Does a system update eliminate the issue for you two as well?

Okay, I take it back; never mind. Under the slightest system load, scrolling in mupdf is again horrendously slow.

Last edited by Doctor Colossus (2013-03-07 15:08:01)

Offline

#6 2013-03-07 19:37:15

battlepanic
Member
Registered: 2009-08-22
Posts: 71

Re: MuPDF version 1.2 is much slower

Doctor Colossus wrote:

Okay, I take it back; never mind. Under the slightest system load, scrolling in mupdf is again horrendously slow.

I have found that the problem becomes pronounced if you are viewing a document at a higher DPI.  You can increase or decrease the DPI (dots per inch) of a document by using the '+' and '-' keys.

Offline

Board footer

Powered by FluxBB