: The update included enhancements to the parallel compacting collector to increase overall application throughput. Stability and Platform Support
Java SE 6 Update 14 Release Notes. - Oracle J2Se 6 Update 14
: A new optimization ( -XX:+DoEscapeAnalysis ) allowed the compiler to determine if an object is "escaped" (used outside a method). If it isn't, the JVM can allocate the object on the stack instead of the heap, significantly speeding up execution and reducing garbage collection overhead. : The update included enhancements to the parallel
: The -XX:+UseCompressedOops option was introduced to improve the performance of 64-bit JREs on heaps smaller than 32GB. It allows 64-bit JVMs to use 32-bit references, reducing memory footprint and improving cache efficiency. If it isn't, the JVM can allocate the
, released by Sun Microsystems on May 29, 2009, was a landmark update that introduced several highly anticipated performance features and significant JVM improvements. Key Highlights and Performance Features