asmhatreandClaude Sonnet 5
f59c1de96d
Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01B38FGKKam5SCGgwgduVAh3
44 lines
1.7 KiB
Plaintext
44 lines
1.7 KiB
Plaintext
# JEP 523: which collector does the JVM pick when you do not choose one?
|
|
# Same class files, same vendor (Amazon Corretto), same 2 GB memory limit. Only the JDK version and the CPU limit change.
|
|
|
|
=== amazoncorretto:26 --cpus=1 --memory=2g
|
|
$ docker run --rm --cpus=1 --memory=2g amazoncorretto:26 java -cp /app GcReport
|
|
java.version = 26.0.2.1
|
|
availableCpus = 1
|
|
maxHeapMB = 511
|
|
collector beans = Copy, MarkSweepCompact
|
|
UseG1GC = false (origin DEFAULT)
|
|
UseSerialGC = true (origin ERGONOMIC)
|
|
UseParallelGC = false (origin DEFAULT)
|
|
|
|
=== amazoncorretto:27 --cpus=1 --memory=2g
|
|
$ docker run --rm --cpus=1 --memory=2g amazoncorretto:27 java -cp /app GcReport
|
|
java.version = 27
|
|
availableCpus = 1
|
|
maxHeapMB = 512
|
|
collector beans = G1 Young Generation, G1 Concurrent GC, G1 Old Generation
|
|
UseG1GC = true (origin ERGONOMIC)
|
|
UseSerialGC = false (origin DEFAULT)
|
|
UseParallelGC = false (origin DEFAULT)
|
|
|
|
=== amazoncorretto:26 --cpus=2 --memory=2g
|
|
$ docker run --rm --cpus=2 --memory=2g amazoncorretto:26 java -cp /app GcReport
|
|
java.version = 26.0.2.1
|
|
availableCpus = 2
|
|
maxHeapMB = 512
|
|
collector beans = G1 Young Generation, G1 Concurrent GC, G1 Old Generation
|
|
UseG1GC = true (origin ERGONOMIC)
|
|
UseSerialGC = false (origin DEFAULT)
|
|
UseParallelGC = false (origin DEFAULT)
|
|
|
|
=== amazoncorretto:27 --cpus=2 --memory=2g
|
|
$ docker run --rm --cpus=2 --memory=2g amazoncorretto:27 java -cp /app GcReport
|
|
java.version = 27
|
|
availableCpus = 2
|
|
maxHeapMB = 512
|
|
collector beans = G1 Young Generation, G1 Concurrent GC, G1 Old Generation
|
|
UseG1GC = true (origin ERGONOMIC)
|
|
UseSerialGC = false (origin DEFAULT)
|
|
UseParallelGC = false (origin DEFAULT)
|
|
|