returning to cost of Integer
Serge D. Mechveliani
mechvel at botik.ru
Mon Jul 31 06:32:49 EDT 2006
Dear GHC developers,
Long ago you wrote that GHC has made Integer only about 3/2 times
slower than Int.
I tested this once, and then all this time I have been relying on this.
Now, with
ghc-6.4.1 compiled for Linux - i386-unknown,
running under Debian Linux, Intel Pentium III
under ghc -O,
I have an occasion to repeat the test on a certain simple program for
processing lists of length 7 over Integer.
And Integer shows 2.55 times slower (11.2 sec against 4.4).
Showld we somehow agree that
cost(Integer)/cost(Int) in GHC is about 2.55
or maybe we are missing something?
-----------------
Serge Mechveliani
mechvel at botik.ru
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