Electrolysis/Release Criteria/Scrolling

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Scrolling responsiveness must not regress when we turn on e10s.

RASCI

  • Responsible: kats
  • Accountable: RyanVM
  • Supporting: avih, jmaher, graphics team
  • Consulted: release management, jmaher
  • Informed: cpeterson, elan

Metrics

FX_REFRESH_DRIVER_SYNC_SCROLL_FRAME_DELAY_MS

talos tp5o_scroll

  • e10s comparison validated: kats
  • Current e10s diff: worse except linux
    • Linux: 17% better
    • All Windows and OS X: 45-110% worse
  • bug 1179735 - tp5o_scroll regression on windows compared to non-e10s
  • Note: reflects synchronous scroll only, so meaningless where APZ kicks in. Currently APZ handles only mouse wheel, so the test currently reflects autoscroll/arrows/page-up-down/etc.
  • kats comments on apz and this test

talos tscrollx

  • e10s comparison validated: kats
  • Current e10s diff: mixed
    • Linux: 30% better
    • OS X: 17% better
    • Windows 8: 7% better
    • Windows 7: 7% worse
    • Windows XP: 50% worse
  • bug 1249976 - tscrollx regressed 6% with e10s on December 25th
  • bug 1174772 - 2.9% win7 tscrollx regression on e10s only
  • Note: reflects synchronous scroll only, so meaningless where APZ kicks in. Currently APZ handles only mouse wheel, so the test currently reflects autoscroll/arrows/page-up-down/etc.
  • Note: tscrollx improved with e10s + no apz 6%-40% so this regression appears to be apz related.

Bugs

Full Query
ID Summary Whiteboard Keywords Assigned to
1256133 Slow, janky scrolling on this support.mozilla.org thread with e10s enabled gfx-noted perf

1 Total; 1 Open (100%); 0 Resolved (0%); 0 Verified (0%);