[GHC] #9706: New block-structured heap organization for 64-bit

[GHC]

#9706: New block-structured heap organization for 64-bit
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              Reporter:  ezyang      |            Owner:  gcampax
                  Type:  task        |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Runtime     |          Version:  7.8.3
  System                             |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
              Blocking:              |
Differential Revisions:  D524        |
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Comment (by simonmar):

 Anything less than 2% is probably noise, unless you can reproduce it
 consistently and/or there is some objective measurement such as number of
 instructions or memory reads using perf.  There are other random effects
 that can cause small wobbles, even code placement by the linker or
 alignment effects.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9706#comment:19>
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