1957254 - RFP: provide [more plausible] hardwareConcurrency per OS

Status: RESOLVED DUPLICATE of bug 1984333

(Core :: DOM: Core & HTML, enhancement)

Description

[Thorin [:thorin]]

This would be nice (and simple to change the value per OS) to get in time for ESR140

Notes:

• Bug 1360039: original RFP implementation in FF55
• Bug 1630089: macOS reports physical cores instead of logical
• Bug 1728741: capped at 16
• https://data.firefox.com/dashboard/hardware
  • 4 33.5% (trending up)
  • 2 31.5% (trending down)
• Brave: randomizes
  • with I assume a range of values [2, 4, 6, 8, 12, etc] - I can find the code later if required
• I don't think there's any real compat issues with reporting a higher value that what the user actually has (see Brave)

Anecdata

• 8 Apple M1 iMac (system report: 4 performance 4 efficiency)
  • JS also returns 8 so IDK re Bug 1630089 (IANAE)
• 10 Galaxy S24 FE (new)
• 8 Galaxy A30 (4+ years old)
• 12 my windows 11 desktop machine

currently RFP hardwareConcurrency is spoofed the same for everyone at 2. It would be nice if we reported more plausible results in line with real world, per OS - e.g. macs and phones reporting 2 seems super low and totally not real world (red flags for anti-bot scripts). IANAE on hardware.

Could we get a summary from telemetry (e.g. Bug 1879151) of hardwareConcurrency by OS to make some informed decisions on this

Comment 1

[Tom Ritter [:tjr] (OOTO until April)]

(In reply to Thorin [:thorin] from comment #0)

Could we get a summary from telemetry (e.g. Bug 1879151) of hardwareConcurrency by OS to make some informed decisions on this

Yes; although we don't have mobile data yet. I will leave the ni for me, and we expect to be doing something with this soonish as well - I think we can align.

Comment 2

[Thorin [:thorin]]

FYI: https://firefoxgraphics.github.io/telemetry/#view=system

• This doesn't break it down by platform, but 2 is only 8% and I would expect e.g. for mac, this would not be a benign value at all
• also see Bug 1984333

Comment 3

[Thorin [:thorin]]

RFP changes were included in Bug 1984333 (FF143+, pending beta uplift)