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Use Compact Strings

Zing Virtual Machine supports JEP 254, the compact strings optimization.

The compact strings feature of the Zing Virtual Machine lowers memory footprint, improves performance of string-intensive applications, and reduces time spent on garbage collection.

To enable or disable the feature, use the following option:

-XX:[+/-]CompactStrings

Note	Compact strings change internal representation of all strings from char[] to byte[], and changes the String class layout. If your application accesses java/lang/String fields via reflection or is unsafe, you may observe incorrect application behavior.

 

 

See Also

• Using the Zing Virtual Machine
• Running a Java Application
• Using ZVM Command-Line Options
• Using ZVM with the Falcon Compiler
• Using ReadyNow!
• Using Compile Stashing
• Reducing Deoptimizations
• Invoking Zing with Native Application
• Using ZVM Instance Configuration Recommendations
• Using Transport Layer Security (TLS) v1.3

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