>so compiling the others with -O is more appropriate. It seems the consensus is I should have activated optimizations. Let check that, same code in the same order (ghc, jhc, gcc).
I changed only the options for ghc and gcc. Below is the Makefile, you can double check. with -O 0:09.96 real,9.86 user,0.06 sys 0:02.06 real,1.02 user,0.92 sys 0:02.80 real,2.55 user,0.00 sys with -O2 0:09.81 real,9.70 user,0.07 sys 0:01.95 real,1.01 user,0.93 sys 0:02.57 real,2.56 user,0.00 sys with -O3 0:09.86 real,9.78 user,0.06 sys 0:01.98 real,1.02 user,0.95 sys 0:02.63 real,2.64 user,0.00 sys I have tried with gcc 3.4 and 4.3.2. All results are consistent. Sylvain Nahas Makefile --------------------- OPT:=-O3 CC:=gcc-3.4 CFLAGS:=-Wall $(OPT) JHC:=/home/sylvain/bin/jhc-0.6.0/bin/jhc GHCFLAGS:=$(OPT) TIMEFMT:=-f "%E real,%U user,%S sys" all: test1 test2 test3 .PHONY: test1 test2 test3 test1: hello1 time $(TIMEFMT) ./$^ >/dev/null test2: hello2 time $(TIMEFMT) ./$^ >/dev/null test3: hello3 time $(TIMEFMT) ./$^ >/dev/null hello1: hello.hs ghc $(GHCFLAGS) $^ -o $@ hello2: hello.hs $(JHC) $^ -o $@ hello3: hello.c $(CC) $(CFLAGS) $^ -o $@ clean: -rm hello1 hello2 hello3 hello.hi hello.ho hello_code _______________________________________________ Haskell mailing list Haskell@haskell.org http://www.haskell.org/mailman/listinfo/haskell