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List:       kde-solaris
Subject:    Re: [kde-solaris] Re: fibonacci
From:       Christopher Layne <clayne () anodized ! com>
Date:       2004-11-19 12:44:42
Message-ID: 20041119124440.GN22380 () ns1 ! anodized ! com
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Kinda funny:

[clayne@build02-sol8-x86 /tmp]$ gcc -O3 -o fib fib.c
[clayne@build02-sol8-x86 /tmp]$ time -p ./fib 36
./fib: calculated 10 fibonacci(36) in 13.000000 seconds
real 13.72
user 13.68
sys 0.00
[clayne@build02-sol8-x86 /tmp]$ gcc -Os -o fib fib.c
[clayne@build02-sol8-x86 /tmp]$ time -p ./fib 36
./fib: calculated 10 fibonacci(36) in 12.000000 seconds
real 12.59
user 12.58
sys 0.02
[clayne@build02-sol8-x86 /tmp]$ gcc -Os -fomit-frame-pointer -o fib fib.c
[clayne@build02-sol8-x86 /tmp]$ time -p ./fib 36
./fib: calculated 10 fibonacci(36) in 10.000000 seconds
real 10.75
user 10.75
sys 0.01


None of these tests mean much as CPU types are wildly different.
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