On Sunday 22 October 2006 09:05, Peter Gordon wrote: > Firstly, there was talk at one point about switching the default RPM > build flags to use -Os (optimize for size, mostly) instead of -O2. For > one, this could potentially reduce the ISO sizes significantly. (I > don't have any specific numbers, but as I recall the estimate was > something of the ~300 MB range, give or take.) Taken from http://lists.opensuse.org/opensuse-factory/2006-10/msg00173.html We run SPECcpu2000 benchmarks on x86-64 to compare -Os and -O2. The results are 1011 (-Os) and 1140 (-O2) for SPECint and for a subset of SPECfp 1202 (-Os) vs. 1270 (-O2), so the speed difference is too high to make this change. Overall .text size of all benchmarks: 6038603 (-Os) vs 6816414 (-O2) With filesize begin nearly exactly 1MB larger in both cases. We'll stay with -O2. -- Marcus
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