On Tue, 23 Aug 2022 16:49:01 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% ) > > Ioi Lam has updated the pull request incrementally with one additional commit > since the last revision: > > @shipilev review comments
make/Images.gmk line 141: > 139: > 140: $$(eval $$(call SetupExecute, $1_$2_gen_cds_archive_jdk, \ > 141: WARN := Creating CDS$$($1_$2_DUMP_TYPE) archive for jdk image for > $1: $$($1_$2_CDS_DUMP_FLAGS), \ The actual flags is too much detail to put on the highest (badly named) WARN level. Instead introduce an additional INFO output, something like this: INFO := Using CDS flags for $1: $$($1_$2_CDS_DUMP_FLAGS), \ ------------- PR: https://git.openjdk.org/jdk/pull/9984
