Claude
b25bd65d4b
Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01HmvoHH3ZnCEaPNXRpDxDZe
18 lines
1.3 KiB
Bash
Executable File
18 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# What does plain -XX:+UseShenandoahGC select on each JDK? Needs J25 and J28 pointing at JDKs that include Shenandoah
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# (Temurin does; the Oracle builds from jdk.java.net do not).
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set -u
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for entry in "JDK 25:$J25" "JDK 28 EA:$J28"; do
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name=${entry%%:*}; home=${entry#*:}
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echo "== $name: $(env -u JAVA_TOOL_OPTIONS "$home/bin/java" -version 2>&1 | sed -n 3p)"
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echo "-- java -XX:+UseShenandoahGC -Xlog:gc+init -version"
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env -u JAVA_TOOL_OPTIONS "$home/bin/java" -XX:+UseShenandoahGC -Xlog:gc+init -Xmx256m -version 2>&1 | grep -E 'Mode:|warning|WARNING|deprecat'
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echo "-- java -XX:+UseShenandoahGC -XX:+PrintFlagsFinal -version (ShenandoahGCMode)"
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env -u JAVA_TOOL_OPTIONS "$home/bin/java" -XX:+UseShenandoahGC -XX:+PrintFlagsFinal -Xmx256m -version 2>&1 | grep -E 'ShenandoahGCMode'
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echo "-- java -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -Xlog:gc+init -version"
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env -u JAVA_TOOL_OPTIONS "$home/bin/java" -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -Xlog:gc+init -Xmx256m -version 2>&1 | grep -E 'Mode:|warning|WARNING|deprecat'
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echo "-- java -XX:+UseShenandoahGC -XX:ShenandoahGCMode=satb -Xlog:gc+init -version"
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env -u JAVA_TOOL_OPTIONS "$home/bin/java" -XX:+UseShenandoahGC -XX:ShenandoahGCMode=satb -Xlog:gc+init -Xmx256m -version 2>&1 | grep -E 'Mode:|warning|WARNING|deprecat'
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echo
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done
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