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rednaxelafx/gist:1066883

Created July 6, 2011 09:11
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how -Xmn and -XX:MaxNewSize/-XX:NewSize interact (JDK6u25)
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gistfile1.txt
$ java -XX:+PrintFlagsFinal -Xmn200m -Xmn300m -Xmn400m | grep 'NewSize'
uintx MaxNewSize := 419430400 {product}
uintx NewSize := 419430400 {product}
uintx NewSizeThreadIncrease = 5320 {pd product}
$ java -XX:+PrintFlagsFinal -Xmn200m -Xmn300m -Xmn400m -XX:MaxNewSize=100m | grep 'NewSize'
uintx MaxNewSize := 419430400 {product}
uintx NewSize := 419430400 {product}
uintx NewSizeThreadIncrease = 5320 {pd product}
$ java -XX:+PrintFlagsFinal -Xmn200m -Xmn300m -Xmn400m -XX:MaxNewSize=100m -XX:NewSize=100m | grep 'NewSize'
uintx MaxNewSize := 104857600 {product}
uintx NewSize := 104857600 {product}
uintx NewSizeThreadIncrease = 5320 {pd product}
$ java -XX:+PrintFlagsFinal -Xmn200m -XX:MaxNewSize=100m -XX:NewSize=100m -Xmn300m | grep 'NewSize'
uintx MaxNewSize := 314572800 {product}
uintx NewSize := 314572800 {product}
uintx NewSizeThreadIncrease = 5320 {pd product}
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