[GHC] #12424: RTS stats show wrong productivity.

[GHC]

#12424: RTS stats show wrong productivity.
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        Reporter:  vagarenko       |                Owner:
            Type:  bug             |               Status:  new
        Priority:  normal          |            Milestone:
       Component:  Runtime System  |              Version:  8.0.1
      Resolution:                  |             Keywords:
Operating System:  Windows         |         Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown    |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
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Comment (by Simon Marlow <marlowsd@…>):

 In [changeset:"1783011726a355ac7647246699d43bc7d8b6d9f1/ghc"
 17830117/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="1783011726a355ac7647246699d43bc7d8b6d9f1"
 Fix productivity calculation (#12424)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12424#comment:1>
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