[tor-bugs] #21011 [Applications/Tor Browser Sandbox]: Disable JavaScript JIT

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#21011: Disable JavaScript JIT
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 Reporter:  cypherpunks                       |          Owner:  yawning
     Type:  enhancement                       |         Status:  new
 Priority:  Medium                            |      Milestone:
Component:  Applications/Tor Browser Sandbox  |        Version:
 Severity:  Normal                            |     Resolution:
 Keywords:  sandbox-security                  |  Actual Points:
Parent ID:                                    |         Points:
 Reviewer:                                    |        Sponsor:
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Comment (by gk):

 Replying to [comment:13 yawning]:
 > > Disabling JIT would provide security benefits to JavaScript users
 without breaking Facebook and other sites. It's just a performance
 optimization which doesn't provide new functionality, after all.
 >
 > On a side note, I brought this up, and argued the case for this (in
 general, beyond the sandbox) at the browser meeting today and was informed
 that some sites have performance degradation that render them unusable
 without the JIT (ISTR mega.nz being mentioned).

 See: #13069. And #9387 has some useful information about this as well as
 there have been performance measurements done and we got user feedback
 (see comment:38:ticket:9387 ff. for some discussion around that, and
 comment:32:ticket:9387) while have it disabled in the alpha series.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21011#comment:14>
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