On Wed, 9 Apr 2025 20:34:42 GMT, Chris Plummer <cjplum...@openjdk.org> wrote:
> > Wait, `LOW` is `-O2`? 👀 I thought it was like no optimization at all. I'm > > sooo confused with these levels. So maybe going from `LOW` to `SIZE` will > > actually lose more optimization than I thought. _sigh_ > > -Os is the same as -O2 minus some optimizations that increase footprint. > > https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html > > -O3 mostly adds more serious footprint increasing optimizations like loop > unrolling. I've seen a number of warnings that suggest in some cases the > larger code can reduce performance, so you may be best off with -O2 or -Os > for best performance. So should we give SIZE opt a try now with JDK26 (for libjdwp) ? Unfortunately we do not have benchmarks for libjdwp (or are there any?) . But this has not stopped us from updating compiler versions etc. .... ------------- PR Comment: https://git.openjdk.org/jdk/pull/23563#issuecomment-3078868634
