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Frame Markers

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Michael Sartain edited this page Oct 3, 2017 · 4 revisions

Frame Markers

  • XDC 2017 Talk
  • Focus on specific frames that are defined using filters
  • A simple frame marker is to use vblanks. Ie:
    • Right click on graph, select Edit Frame Markers..., click on $name = drm_vblank_event && $crtc = 1
    • Hit Check Filters and it should show you information about vblank 1. Ie:
      • 212 frames, ~11ms apart
  • Click the Set Frame Markers button
  • Control+Left and Control+Right will now go through those frames and scale them to fit in the graph window
  • If you zoom out, you can see the frames in yellow or pink, and the left frame you're focused on in a lighter green.
  • Ctrl+Shift+Left/Right will move the frames without scaling them to the window
  • You can do more complicated frames as well. For the sample trace, set:
    • Left Frame Marker: $buf =~ "[Compositor] Before wait query
    • Right Frame Marker: $buf =~ "[Compositor] After wait query
  • Your Frame Markers are the areas between the Before wait query and the After wait query print events as in the below image.

https://raw.githubusercontent.com/wiki/mikesart/gpuvis/images/frame_markers.jpg

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