#3019 HIGH Trial-3: PATCH: Optimize get_activities by making it async

[Zarro Boogs per Child]

#3019: PATCH: Optimize get_activities by making it async
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  Reporter:  J5      |       Owner:  tomeu               
      Type:  defect  |      Status:  new                 
  Priority:  high    |   Milestone:  Trial-3             
 Component:  sugar   |     Version:                      
Resolution:          |    Keywords:  optimization review?
  Verified:  0       |  
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Comment (by J5):

 This patch fixes all sync calls and now startup from matchbox to
 gtk.main() is 2.6 seconds.  However I have just chased the rabbit down the
 hole as time to interactivity is still around 5.5 seconds or so.  This is
 most likely due to processing the async calls delaying drawing of the
 panels and other graphics elements (we go through a lot of loops which
 causes us to become slower the more buddies, activities and access points
 are available).  I suggest we chase the rabbit further and delay
 processing of buddy and activity lists in an idle source (process one item
 per source pass).  Buddies are less missed and can take awhile to appear
 but activities perhaps need to be played with to find an optimal priority.

 I also suggest starting the frame closed and when it is filled, have it
 flow on screen.  Part of boot optimization is making it feel faster.
 Having smooth transitions while actually increasing the time, makes it
 feel faster.

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Ticket URL: <http://dev.laptop.org/ticket/3019#comment:3>
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