Claude
e83c9949d8
Spring Boot 4.1.1 catalog service measured on JDK 25, 26 and 27: live heap 320 MB to 273 MB with compact headers, per-class bytes per instance, container-sizing sweeps with real cgroup limits, 1-CPU Serial vs G1 with Native Memory Tracking, removed flags (MaxRAM, UseCompressedClassPointers), and a kernel OOM-kill check. Outputs in jdk27-memory/output. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01TF9JWFvJSNm6HVzswzZU5a
41 lines
1.1 KiB
Plaintext
41 lines
1.1 KiB
Plaintext
== JDK 25
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java 25.0.4.1 compact headers: false
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id offset 16
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priceCents offset 12
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stock offset 24
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active offset 28
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sku offset 32
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first field starts at byte 12 (so the header is at most 12 bytes)
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a hard-coded 12-byte header would be right here
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== JDK 26
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java 26.0.2.1 compact headers: false
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id offset 16
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priceCents offset 12
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stock offset 24
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active offset 28
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sku offset 32
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first field starts at byte 12 (so the header is at most 12 bytes)
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a hard-coded 12-byte header would be right here
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== JDK 27
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java 27 compact headers: true
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id offset 8
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priceCents offset 16
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stock offset 20
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active offset 24
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sku offset 28
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first field starts at byte 8 (so the header is at most 8 bytes)
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a hard-coded 12-byte header would be WRONG here
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== JDK 27 -XX:-UseCompactObjectHeaders
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java 27 compact headers: false
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id offset 16
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priceCents offset 12
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stock offset 24
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active offset 28
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sku offset 32
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first field starts at byte 12 (so the header is at most 12 bytes)
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a hard-coded 12-byte header would be right here
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