7.12.6 -XX:[+|-]HitachiAutoExplicitMemory

Description

-XX:[+|-]HitachiAutoExplicitMemory specifies whether to enable or disable the functionality for automatically placing Explicit memory blocks. When this option is enabled, the required Explicit memory blocks are secured when Java VM starts, regardless of the version (32-bit or 64-bit). Note that Java VM cannot start if a continuous area cannot be secured in memory space at startup.

Furthermore, when this option is enabled, the minimum size of an Explicit memory block is 16 kilobytes. When this option is disabled, the minimum size of an Explicit memory block is 64 kilobytes.

Prerequisite options

• -XX:+HitachiUseExplicitMemory

• -XX:+HitachiExplicitMemoryAutoReclaim

• -XX:-HitachiExplicitMemoryCompatibleToV8

Related option

• -XX:HitachiAutoExplicitMemoryFile

Syntax

-XX:[+|-]HitachiAutoExplicitMemory

Specifiable values

Type: String

-XX:+HitachiAutoExplicitMemory

Enables the automatic placement functionality for the explicit memory management functionality.

-XX:-HitachiAutoExplicitMemory

Disables the automatic placement functionality for the explicit memory management functionality.

Default value

If the definition item is omitted:

-XX:-HitachiAutoExplicitMemory