[tbb-bugs] #28710 [Applications/Tor Browser]: Randomize small allocations in mozjemalloc

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Dec 20 16:57:31 UTC 2018


#28710: Randomize small allocations in mozjemalloc
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 Reporter:  tom                       |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:  #28707                    |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by tom):

 Putting this here so I don't lose it.

 Talos shows performance regressions (only was able to test Linux/OSX):
 https://treeherder.mozilla.org/perf.html#/compare?originalProject=try&originalRevision=db57ad7ff45d3096eb579bb7fb60425d6413287f&newProject=try&newRevision=11d1e0fa67e6198de068be9fa2273a91f56d908e&framework=1&showOnlyComparable=1&showOnlyImportant=1
 The worst one goes up to 10%, but there's several around 2.5% and 7.5%

 This is the most recent build:
 https://treeherder.mozilla.org/#/jobs?repo=try&revision=11d1e0fa67e6198de068be9fa2273a91f56d908e

 Windows is broken, this was my most recent attempt to fix it:
 https://treeherder.mozilla.org/#/jobs?repo=try&revision=2db9b7395f35ea22144cfea29cc836d7674a03fc&selectedJob=216260440
 (Compiles, but something causes some tests to fail that normally work.)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28710#comment:1>
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