[GHC] #16003: Average and maximum residency numbers in nofib broken

6 Dec 2018

      #16003: Average and maximum residency numbers in nofib broken
-------------------------------------+-------------------------------------
           Reporter:  sgraf          |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  ⊥
          Component:  NoFib          |           Version:  8.6.2
  benchmark suite                    |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:  5793
Differential Rev(s):                 |         Wiki Page:
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 Measuring average and maximum residency in nofib is currently broken:

 {{{
 <https://github.com/ghc/nofib/blob/f87d446b4e361cc82f219cf78917db9681af69b3/r...
 this line] in runstdtest.prl was responsible for matching on `-S` output,
 but since
 [https://phabricator.haskell.org/rNOFIB4e12b05c76e98aa8e32c9f867519c8187e69e1...
 this commit], we only do `-s` for performance reasons. There's
 [https://github.com/ghc/nofib/blob/f87d446b4e361cc82f219cf78917db9681af69b3/r...
 this bit of outcommented code] that probably does what we want.

 It seems that residency numbers were the only metrics depending on `-S`. I
 don't think there's a way to recover average residency with `-s` alone.

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16003
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