[tor-bugs] #22127 [Applications/Tor Browser]: Think about a more elaborate defense against fingerprinting with `hardwareConcurrency`

[Tor Bug Tracker & Wiki]

#22127: Think about a more elaborate defense against fingerprinting with
`hardwareConcurrency`
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     Reporter:  gk                        |      Owner:  tbb-team
         Type:  enhancement               |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:  tbb-fingerprinting
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
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 In #21675 we set `dom.maxHardwareConcurrency` to `1` making users uniform.
 The cost for those with computers with more than 1 core could be
 performance degradation. We could think about following a bucket approach
 here, too, to mitigate that while still providing fingerprinting
 protection: users with up to and including 3 cores report back 1 core,
 users with 4 and up to and including 7 cores report 4 back and users with
 8 or more cores report 8 back. It would be neat if we could apply that to
 #18559 as well although this might be an orthogonal problem.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22127>
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