Experiment Type: Pref Flip Experiment

    What is the preference we will be changing

gfx.webrender.all.qualified

    What are the branches of the experiment and what values should
    each branch be set to?

- Treatment enabled 50%:

Value: true

Control branch
        
- Treatment disabled 50%:

Value: false

This is the group that we will disable WebRender for so we can compare performance against those that do have WebRender
        

    What version and channel do you intend to ship to?

5% of Release Firefox 70.0

    Are there specific criteria for participants?

Prefs: IMPORTANT: This is a pref flip experiment, please keep it separate from the Rollout (https://experimenter.services.mozilla.com/experiments/webrender-intel-rollout/).
Experiments: none

Any additional filters:
1. Windows 10
2. normandy.telemetry.main.environment.system.gfx.features.wrQualified.status == 'available'
3. Intel Graphics cards, Windows 10 no battery, small screen: (<= 1920x1200)

Sgua NOTE:  Filtering on normandy.telemetry.main.environment.system.gfx.features.wrQualified.status == 'available' and an Intel graphics card should incorporate the screen size and battery limits; those are baked into the wrQualified assessment.

In comments with Jessie we agreed to filter to single monitors.
Countries: all

Locales: all

    What is your intended go live date and how long will the experiment run?

Oct 29, 2019 - Nov 26, 2019 (28 days)

    What is the main effect you are looking for and what data will you use to
    make these decisions?

overall crash reports ≤ 5% increase in crash rate
OOM crash reports ≤ 5% increase in crash rate
shutdown crashes ≤ 5% increase in crash rate
CANVAS_WEBGL_SUCCESS ≤ 5% regression in median of fraction "True" per user
COMPOSITE_TIME Median per-user fraction of slow frames < 0.5% (absolute)
CONTENT_FRAME_TIME_VSYNC ≤ 5% regression in median of per-user fraction of slow events
CONTENT_FULL_PAINT_TIME ≤ 5% regression in fraction of slow paints (> 16 ms), ≤ 5% regression in median of per-user means
DEVICE_RESET_REASON ≤ 5% increase in reset rate
FX_PAGE_LOAD_MS_2 ≤ 5% regression in median of per-user means

Crash (/submission/reset) rates will be measured as events per 1,000 usage hours. A "slow event" means 16 ms or 200% vsync.

Do you plan on surveying users at the end of the experiment?  No.
Strategy and Insights can help create surveys if needed

    Who is the owner of the data analysis for this experiment?

sguha@mozilla.com

    Will this experiment require uplift?

False

    QA Status of your code:

Signed off as GREEN, for more info see https://experimenter.services.mozilla.com/experiments/webrender-intel-performance-70/#comment496.

Green

    Link to more information about this experiment:

https://experimenter.services.mozilla.com/experiments/webrender-intel-performance-70/