[wp-trac] [WordPress Trac] #5303: "Manage > Pages" becomes very slow with hundreds of pages

[WordPress Trac]

#5303: "Manage > Pages"  becomes very slow with hundreds of pages
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 Reporter:  MartijnD      |        Owner:  anonymous
     Type:  defect (bug)  |       Status:  reopened 
 Priority:  normal        |    Milestone:  2.8.5    
Component:  General       |      Version:  2.8.4    
 Severity:  normal        |   Resolution:           
 Keywords:  has-patch     |  
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Comment(by mihai):

 After using xdebug I found out that the main problem was the function
 get_page_children . I modified this function to something similar to the
 idea from http://core.trac.wordpress.org/changeset/6380 decreased the time
 to 1 minute.
 Now it seems like the rest of the time wordpress tries to update the cache
 with all those 7000 pages. If I just remove the call to update_post_caches
 in get_posts the load time goes down to 15 seconds. This is finally
 acceptable . Why does it need to update the cache for all pages when they
 are displayed in admin ?

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Ticket URL: <http://core.trac.wordpress.org/ticket/5303#comment:15>
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