D10512: try to preload certain applets in a smart way

[Marco Martin]

mart added a comment.


  sooo, benchmarks:
  i tracked the time that occurs between mouse click and the return of setExpanded, which is reasonably near to the popup actually appearing (numbers consistent doing things more than once)
  this is done on a fairly fast machine, would be interesting to do the same on a really slow one, like the pinebook
  
  Kickoff: no preload, before incubator removal: 279 msecs
  Kickoff: no preload, after incubator removal: 211 msec
  Kickoff: with preload: 15 msecs (the first time still takes some tme to build all the nodes and texture, second time 0 msecs)
  
  digital clock (with akonadi integration which makes the graphics a bit more complex)
  digital clock: no preload, before incubator removal: 739 msecs
  digital clock, no preload , after incubator removal: 234 msecs
  digital clock, preload: 46 msecs (graphically quite complex, takes a more to create all textures, second time is 0 as usual)
  
  media player: no preload, before incubator removal: 148 msecs
  media player, no preload  , after incubator removal: 89 msec
  media player, preload: 0 msecs (graphics simple enough for texture creation to not register?)
  
  Clipboard, no preload ,  before incubator removal: 191 msec
  Clipboard, no preload ,  after incubator removal: 79 msec
  Clipboard, preload: 0 msec
  
  kicker: no preload, after incubator removal: 79 msecs
  kicker: preload: 9 msec

REPOSITORY
  R242 Plasma Framework (Library)

REVISION DETAIL
  https://phabricator.kde.org/D10512

To: mart, #plasma
Cc: davidedmundson, broulik, apol, ngraham, plasma-devel, #frameworks, michaelh, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, mart
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