675962 - Collect dual-GPU usage data using Telemetry

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[Ali Juma [:ajuma]]

We should use Telemetry to better understand real-world usage of dual-GPUs, and the extent to which we can rely on particular approaches for detecting the active GPU. 

For example:
-what percentage of our users have dual-GPU systems
-how many of these systems have exactly one GPU that is blacklisted (in which case, correctly detecting the active GPU in our blacklisting logic is crucial for correct behaviour)
-do D3D9 and D3D10 always get the same GPU

Comment 1

[John Daggett (:jtd)]

Is there anything else needed beyond the gfxinfo that is now included in telemetry data?

Comment 2

[Ali Juma [:ajuma]]

(In reply to John Daggett (:jtd) from comment #1)
> Is there anything else needed beyond the gfxinfo that is now included in
> telemetry data?

It'd be nice to also know which GPU is being used for D3D9 and D3D10 (and how frequently this is GPU #1 in gfxinfo), since this would tell us how frequently our current blacklisting logic is making a decision based on the wrong GPU.

Comment 3

[Gregory Pappas [:gregp]]

Checked the probe dictionary and found this https://probes.telemetry.mozilla.org/?view=detail&probeId=environment%2Fsystem.gfx.adapters[index].isGPU2Active