Avoid querying affinity/ADPF mode on ineligible hardware [chromium/src : main]

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Richard Townsend (Gerrit)

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Feb 4, 2026, 5:01:24 PMFeb 4
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Richard Townsend (Gerrit)

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Feb 4, 2026, 6:42:21 PMFeb 4
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Richard Townsend . resolved

Hi François,

PTAL at this quick fixup to the PerformanceHelper that prepares it slightly better for the final form of the Finch trial (I can ping you a link internally).

Best
Richard

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Francois Pierre Doray (Gerrit)

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Feb 6, 2026, 9:11:30 AMFeb 6
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Richard Townsend (Gerrit)

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Feb 6, 2026, 9:13:22 AMFeb 6
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Richard Townsend . resolved

Thanks for the review,

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Richard

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Chromium LUCI CQ (Gerrit)

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Feb 6, 2026, 10:18:59 AMFeb 6
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Chromium LUCI CQ submitted the change

Change information

Commit message:
Avoid querying affinity/ADPF mode on ineligible hardware

Because the Finch trial may not be targeted to specific hardware as
originally planned, avoid accessing the base::Feature state until it's
determined that the device can handle affinity/efficient hints. This
should increase statistical power by keeping ineligible hardware out of
the experiment arms.
Bug: 464505581
Change-Id: I223a07226256128490057848e8d260037ba4b013
Reviewed-by: Francois Pierre Doray <fdo...@chromium.org>
Commit-Queue: Richard Townsend <ritow...@google.com>
Cr-Commit-Position: refs/heads/main@{#1580824}
Files:
  • M third_party/blink/renderer/platform/scheduler/main_thread/main_thread_scheduler_impl.cc
Change size: S
Delta: 1 file changed, 32 insertions(+), 7 deletions(-)
Branch: refs/heads/main
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