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