asmhatre/zgc-jdk25-benchmarks
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Add shenandoah-jdk28: generational vs SATB Shenandoah, G1 and ZGC on a Spring Boot service (JEP 535 status probe included)

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Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01HmvoHH3ZnCEaPNXRpDxDZe
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Claude
2026-10-24 10:53:17 +00:00
parent df13a904d7
commit b25bd65d4b
14 changed files with 460 additions and 0 deletions
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shenandoah-jdk28/output/01-gc-mode-probe.txt
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== JDK 25: OpenJDK 64-Bit Server VM Temurin-25.0.5+8 (build 25.0.5+8-LTS, mixed mode, sharing)
-- java -XX:+UseShenandoahGC -Xlog:gc+init -version
[0.009s][info][gc,init] Mode: Snapshot-At-The-Beginning (SATB)
-- java -XX:+UseShenandoahGC -XX:+PrintFlagsFinal -version (ShenandoahGCMode)
ccstr ShenandoahGCMode = satb {product} {default}
-- java -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -Xlog:gc+init -version
[0.009s][info][gc,init] Mode: Generational
-- java -XX:+UseShenandoahGC -XX:ShenandoahGCMode=satb -Xlog:gc+init -version
[0.007s][info][gc,init] Mode: Snapshot-At-The-Beginning (SATB)
== JDK 28 EA: OpenJDK 64-Bit Server VM Temurin-28+21-202610221655 (build 28-beta+21-ea, mixed mode, sharing)
-- java -XX:+UseShenandoahGC -Xlog:gc+init -version
[0.006s][info][gc,init] Mode: Snapshot-At-The-Beginning (SATB)
-- java -XX:+UseShenandoahGC -XX:+PrintFlagsFinal -version (ShenandoahGCMode)
ccstr ShenandoahGCMode = satb {product} {default}
-- java -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -Xlog:gc+init -version
[0.008s][info][gc,init] Mode: Generational
-- java -XX:+UseShenandoahGC -XX:ShenandoahGCMode=satb -Xlog:gc+init -version
[0.007s][info][gc,init] Mode: Snapshot-At-The-Beginning (SATB)