IBM Java 8 support appears to have issues - Githubissues

ehcache / sizeof

Configurable sizeOf engine for Ehcache

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IBM Java 8 support appears to have issues #55

Open sesuncedu opened 6 years ago

sesuncedu commented 6 years ago

Test environment is linux,amd64

With compressed references.

Empty array reported as using 16 bytes by Agent but 8 bytes by Unsafe.
new Object[1] is reported as using 16 bytes by Agent and Unsafe.

With compressed references disabled,

new Object() size is reported as 16 bytes by Agent and 24 bytes by Unsafe

Header sizes in JvmInformation appear to be incorrect

16 bytes for 32 bit /compressed refs, 24 bytes for uncompressed refs