#11614 NORM 1.75-so: Performance problems in Read activity reading EPUB books

Zarro Boogs per Child bugtracker at laptop.org
Wed Feb 8 08:24:14 EST 2012

#11614: Performance problems in Read activity reading EPUB books
           Reporter:  godiard         |       Owner:  godiard      
               Type:  defect          |      Status:  new          
           Priority:  normal          |   Milestone:  1.75-software
          Component:  read-activity   |     Version:  not specified
         Resolution:                  |    Keywords:               
        Next_action:  add to release  |    Verified:  0            
Deployment_affected:                  |   Blockedby:               
           Blocking:                  |  
Changes (by godiard):

  * next_action:  diagnose => add to release


 I found the following problems:

 * The documents were reloaded many times when not needed, because of
 comparing a filename with a URI.

 * Every time the file was loaded was copied from a xml file to a xhtml
 file, was replaced by doing a symlink.

 * In many scrollbar movements, change-page signals were emited when not
 needed, then the activity looked for bookmarks and highlights and do other
 unneded work.

 * Race conditions loading documents.

 These problems were solved in the gtk3 branch, and the needed changes were
 backported to the gtk2 branch. A activity ready to test is here

Ticket URL: <http://dev.laptop.org/ticket/11614#comment:1>
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