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The heap profile for my program, generated by ./program +RTS -hy -p, is dominated by “ARR_WORDS”. It doesn’t correspond to anything obvious in my program; is it a GHC internal of some sort? How should I treat its dominating appearance in the profile?
I’m using GHC 7.0.3.
ARR_WORDSis the internal name ofByteArray#, which is a GHC type used to implement e.g.ByteString,Textand unboxed arrays.