#5505: Program runs faster with profiling than without
---------------------------+------------------------------------------------
Reporter: simonpj | Owner: simonmar
Type: bug | Status: closed
Priority: high | Milestone: 7.4.1
Component: Compiler | Version: 7.0.3
Resolution: fixed | Keywords:
Testcase: | Blockedby:
Difficulty: | Os: Unknown/Multiple
Blocking: | Architecture: Unknown/Multiple
Failure: None/Unknown |
---------------------------+------------------------------------------------
Changes (by simonmar):
* status: new => closed
* resolution: => fixed
Comment:
Results for the original `UULib` test program after the above patch:
{{{
> ./UULib +RTS -s
138000
101,854,752 bytes allocated in the heap
38,063,512 bytes copied during GC
9,955,944 bytes maximum residency (5 sample(s))
2,221,040 bytes maximum slop
24 MB total memory in use (0 MB lost due to fragmentation)
Tot time (elapsed) Avg pause Max
pause
Gen 0 191 colls, 0 par 0.04s 0.04s 0.0002s
0.0011s
Gen 1 5 colls, 0 par 0.05s 0.05s 0.0098s
0.0254s
INIT time 0.00s ( 0.00s elapsed)
MUT time 0.10s ( 0.10s elapsed)
GC time 0.09s ( 0.09s elapsed)
EXIT time 0.00s ( 0.00s elapsed)
Total time 0.20s ( 0.19s elapsed)
%GC time 45.5% (46.1% elapsed)
Alloc rate 952,278,461 bytes per MUT second
Productivity 54.3% of total user, 54.9% of total elapsed
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5505#comment:11>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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