Try it and let us know... Can you say Guinea Pig? I know you can say Guinea Pig. I like it when you say Guinea Pig. (With apologies to Mr. Rodgers)
According to the doc (you did look this up, right?) http://gcc.gnu.org/onlinedocs/gcc-2.95.3/gcc_2.html#SEC10 -O2 Optimize even more. GCC performs nearly all supported optimizations that do not involve a space-speed tradeoff. The compiler does not perform loop unrolling or function inlining when you specify `-O2'. As compared to `-O', this option increases both compilation time and the performance of the generated code. `-O2' turns on all optional optimizations except for loop unrolling, function inlining, and strict aliasing optimizations. It also turns on the `-fforce-mem' option on all machines and frame pointer elimination on machines where doing so does not interfere with debugging. -O3 Optimize yet more. `-O3' turns on all optimizations specified by `-O2' and also turns on the `inline-functions' option. I don't see any reason why is *shouldn't* work... Homework: * How much longer does it take to compile? (make clean && ./configure ... && time make on my Linux box) * What was the CPU utilization when compiled with -O2? Compute the improvement. * What are the differences in executable and .so sizes?? -----Burton -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Horta, Benny Sent: Friday, September 20, 2002 9:53 AM To: '[EMAIL PROTECTED]' Subject: [Ntop-dev] compiled NTOP using -O3 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Any issues running ntop 2.1.50 compiled with the -O3 flags, I recompiled and it seems to work okay cpu is around 40-45 percent on a 65megabit backbone. PC is a p4 1.5ghz but only has 256mb of ram though -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 7.0.3 for non-commercial use <http://www.pgp.com> iQA/AwUBPYs2Xa1GcDuKcUnvEQLQFACgg9kTRtBAotVqaXg7Utym2LYXkykAn1qv OarIhb5jRsGy6zzKKhuVuXSo =Ji1+ -----END PGP SIGNATURE----- _______________________________________________ Ntop-dev mailing list [EMAIL PROTECTED] http://lists.ntop.org/mailman/listinfo/ntop-dev
