Matt Garman wrote: > On Wed, Oct 22, 2003 at 07:08:39AM +0800, William Kenworthy wrote: > > On all the machines (athlon t-bird, p4) I have tried so far, -O3 > > always decreases performance - O2 is best (dramatically so on > > something like a > > Indeed, in this case, O2 is faster than O3. I assumed Debian's gcc > package was compiled with O2, so I just re-merged my gentoo gcc using > O2. I recompiled my program, and now it is back to its better running > time (two or three seconds to load all the records in memory).
Yup. That's why I'm recompiling my whole system with -Os (even gcc, glibc, kernel, etc.) Regards, Norberto
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