D22375: new class KBusyIndicatorWidget similar to QtQuick's BusyIndicator

[René J.V. Bertin]

rjvbb added a comment.


  I'll repeat here what I muttered on the associated commit page:
  
  This widget adds a lot of CPU overhead, too much IMHO: the dedicated test tool runs at a bit over 10%CPU, and that is not counting the additional overhead from the displaying layers (X server, the Mac WindowServer, etc). This overhead appears to scale with the CPU: it's in the same order of magnitude on my lowly N3150 Linux machine as on my (older but still) much faster Mac that has an i7.
  
  Adding a simple
  
    animation.thread()->mSleep(250);
  
  after the `q->update();` line does make the animation a bit choppier but reduces the test tool's CPU load to under 1%.

REPOSITORY
  R236 KWidgetsAddons

REVISION DETAIL
  https://phabricator.kde.org/D22375

To: sitter, cfeck, apol
Cc: rjvbb, ngraham, kossebau, broulik, kde-frameworks-devel, apol, LeGast00n, GB_2, michaelh, bruns
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