On Tue, 23 Aug 2022 15:56:35 GMT, Ioi Lam <ik...@openjdk.org> wrote: > ZERO uses UseSerialGC by default. When we dump the default CDS archive during > the build process, it fails to dump the shared heap (which requires G1GC). > > The fix is to force -XX:+UseG1GC when dumping the default CDS archive during > the build process. > > Speed up: > > (Before) > $ perf stat -r 40 ./images/jdk/bin/java -version > 0.018080 +- 0.000388 seconds time elapsed ( +- 2.15% ) > > (After) > $ perf stat -r 40 ./images/jdk/bin/java -version > 0.011986 +- 0.000205 seconds time elapsed ( +- 1.71% )
Stupid question, does that not mean that the CDS dump generated at build time is not usable with the VM at runtime if that is started with default options? ------------- PR: https://git.openjdk.org/jdk/pull/9984
