[GHC] #14453: CircleCI builds on Linux spuriously fail

[GHC]

#14453: CircleCI builds on Linux spuriously fail
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        Reporter:  bgamari           |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.1
       Component:  Continuous        |              Version:  8.2.1
  Integration                        |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"5f158bc1a7eedf8680f4a1e612ca34daa05e0029/ghc"
 5f158bc1/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="5f158bc1a7eedf8680f4a1e612ca34daa05e0029"
 circleci: Bump down thread count

 It appears that our jobs generally run on VMs with 2 vCPUs. Consequently
 running
 with 8 jobs will completely oversubscribe the machine. I suspect this is
 the
 cause of #14453. Let's bump this down to 3 for now. Ideally we would
 determine
 this from the environment.
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14453#comment:1>
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