[GHC] #3149: Data.HashTable is slow

[GHC]

#3149: Data.HashTable is slow
---------------------------------+------------------------------------------
    Reporter:  dons              |         Type:  bug           
      Status:  closed            |     Priority:  normal        
   Milestone:  _|_               |    Component:  libraries/base
     Version:  6.10.1            |   Resolution:  fixed         
    Keywords:                    |   Difficulty:  Unknown       
          Os:  Unknown/Multiple  |     Testcase:                
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown  
---------------------------------+------------------------------------------
Changes (by simonmar):

  * status:  new => closed
  * resolution:  => fixed


Comment:

 I'm claiming this is fixed in 6.12.1:

 {{{
 $ ./3149 +RTS -s
 ./3149 +RTS -s
 Just 100
    1,826,563,432 bytes allocated in the heap
    3,333,946,592 bytes copied during GC
      836,996,392 bytes maximum residency (11 sample(s))
        5,558,824 bytes maximum slop
             1621 MB total memory in use (25 MB lost due to fragmentation)

   Generation 0:  3400 collections,     0 parallel,  3.17s,  3.21s elapsed
   Generation 1:    11 collections,     0 parallel,  4.43s,  5.63s elapsed

   INIT  time    0.00s  (  0.00s elapsed)
   MUT   time    0.62s  (  0.61s elapsed)
   GC    time    7.60s  (  8.84s elapsed)
   EXIT  time    0.00s  (  0.00s elapsed)
   Total time    8.23s  (  9.46s elapsed)

   %GC time      92.4%  (93.5% elapsed)

   Alloc rate    2,918,294,477 bytes per MUT second

   Productivity   7.6% of total user, 6.6% of total elapsed
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3149#comment:10>
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