gcc-4.4.real -o Fibonacci fibonacci.c 
real	0m17.046s 
user	0m14.749s 
sys	0m0.007s 

gcc-4.4.real -Os -o Fibonacci fibonacci.c 
real	0m8.880s 
user	0m7.613s 
sys	0m0.000s 

gcc-4.4.real -O1 -o Fibonacci fibonacci.c 
real	0m15.310s 
user	0m13.409s 
sys	0m0.007s 

gcc-4.4.real -O2 -o Fibonacci fibonacci.c 
real	0m8.605s 
user	0m7.503s 
sys	0m0.007s 

gcc-4.4.real -O3 -o Fibonacci fibonacci.c 
real	0m6.580s 
user	0m5.743s 
sys	0m0.000s

-> Com -march=native

gcc-4.4.real -march=native -o Fibonacci fibonacci.c 
real	0m17.273s 
user	0m15.106s 
sys	0m0.000s 

gcc-4.4.real -march=native -Os -o Fibonacci fibonacci.c 
real	0m8.689s 
user	0m7.623s 
sys	0m0.000s 

gcc-4.4.real -march=native -O1 -o Fibonacci fibonacci.c 
real	0m15.095s 
user	0m13.282s 
sys	0m0.010s 

gcc-4.4.real -march=native -O2 -o Fibonacci fibonacci.c 
real	0m8.457s 
user	0m7.366s 
sys	0m0.010s 

gcc-4.4.real -march=native -O3 -o Fibonacci fibonacci.c 
real	0m6.766s 
user	0m5.910s 
sys	0m0.007s

-> Com -pipe

gcc-4.4.real -pipe -o Fibonacci fibonacci.c 
real	0m17.352s 
user	0m14.772s 
sys	0m0.013s 

gcc-4.4.real -Os -pipe -o Fibonacci fibonacci.c 
real	0m8.687s 
user	0m7.613s 
sys	0m0.007s 

gcc-4.4.real -O1 -pipe -o Fibonacci fibonacci.c 
real	0m15.407s 
user	0m13.389s 
sys	0m0.007s 

gcc-4.4.real -O2 -pipe -o Fibonacci fibonacci.c 
real	0m8.551s 
user	0m7.510s 
sys	0m0.000s 

gcc-4.4.real -O3 -pipe -o Fibonacci fibonacci.c 
real	0m6.685s 
user	0m5.723s 
sys	0m0.007s

-> Com -march=native e -pipe

gcc-4.4.real -march=native -pipe -o Fibonacci fibonacci.c 
real	0m17.234s 
user	0m15.106s 
sys	0m0.007s 

gcc-4.4.real -march=native -Os -pipe -o Fibonacci fibonacci.c 
real	0m8.979s 
user	0m7.653s 
sys	0m0.000s 

gcc-4.4.real -march=native -O1 -pipe -o Fibonacci fibonacci.c 
real	0m15.157s 
user	0m13.296s 
sys	0m0.007s 

gcc-4.4.real -march=native -O2 -pipe -o Fibonacci fibonacci.c 
real	0m8.792s 
user	0m7.390s 
sys	0m0.013s

gcc-4.4.real -march=native -O3 -pipe -o Fibonacci fibonacci.c 
real	0m6.936s 
user	0m5.940s 
sys	0m0.000s 

-> Saida do GCC (Tutorial de compilação do Galactus)

gcc-4.4.real -march=nocona -O2 -pipe -mtune=nocona -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c 
real	0m8.629s 
user	0m7.406s
sys	0m0.000s 

gcc-4.4.real -march=native -O2 -pipe -mtune=generic -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c 
real	0m8.805s 
user	0m7.513s 
sys	0m0.007s 

gcc-4.4.real -march=native -O2 -pipe -mtune=native -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c
real	0m8.840s 
user	0m7.360s 
sys	0m0.013s

-----

gcc-4.4.real -march=native -O3 -pipe -mtune=generic -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c
real	0m6.871s 
user	0m5.746s 
sys	0m0.000s

gcc-4.4.real -march=nocona -O3 -pipe -mtune=nocona -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c
real	0m6.878s 
user	0m5.903s 
sys	0m0.007s

gcc-4.4.real -march=native -O3 -pipe -mtune=native -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c
real	0m6.970s 
user	0m5.886s 
sys	0m0.010s

-> Flags do Gentoo

gcc-4.4.real -march=nocona -O2 -pipe -o Fibonacci fibonacci.c
real	0m8.743s 
user	0m7.376s 
sys	0m0.007s

-> Melhores Resultados:
gcc-4.4.real -O3 -o Fibonacci fibonacci.c 
real	0m6.580s 
user	0m5.743s 
sys	0m0.000s 

gcc-4.4.real -march=native -O3 -o Fibonacci fibonacci.c 
real	0m6.766s 
user	0m5.910s 
sys	0m0.007s 

gcc-4.4.real -O3 -pipe -o Fibonacci fibonacci.c 
real	0m6.685s 
user	0m5.723s 
sys	0m0.007s 

gcc-4.4.real -march=native -O3 -pipe -mtune=generic -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c
real	0m6.871s 
user	0m5.746s 
sys	0m0.000s

gcc-4.4.real -march=nocona -O3 -pipe -mtune=nocona -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c
real	0m6.878s 
user	0m5.903s 
sys	0m0.007s

gcc-4.4.real -march=native -O3 -pipe -o Fibonacci fibonacci.c 
real	0m6.936s 
user	0m5.940s 
sys	0m0.000s 

gcc-4.4.real -march=native -O3 -pipe -mtune=native -mcx16 -msahf --param l1-cache-size=16 --param l1-cache-line-size=64 --param l2-cache-size=256 -o Fibonacci fibonacci.c
real	0m6.970s 
user	0m5.886s 
sys	0m0.010s