On 19/09/2010 13:11, Stefan Wehr wrote:
Hi all,
I'm profiling a Haskell program and now getting that the program
spents 56% of its individual time in the cost centre MAIN (note the
capital letters).
I searched the documentation for this cost centre, with no success. In
all profiling results so far, the individual time spent in MAIN was
always 0%.
The profiler constructs a tree of cost centres representing the lexical
call structure of your program. The root of this tree is the special
cost centre "MAIN", which will collect any costs that are not otherwise
attributed to any other cost centre.
Usually if you get lots of costs attributed to "MAIN", then you don't
have any cost centres; you should either compile with -auto-all, or add
explicit cost centres yourself with {-# SCC "..." #-}.
Cheers,
Simon
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