Solaris Native Thread Support
In a multi-processor environment, the Solaris kernel
can schedule native threads on the parallel processors
for increased performance.
The native threads VM integrates better with native code
than the default green threads VM.
The VM can avoid some inefficient remapping of I/O system
calls that are otherwise necessary.
Reduced Memory Usage for Loaded Classes
Constant strings are shared among different classes, resulting
in reduced memory consumption for Java applications.
Faster Memory Allocation and Garbage Collection
The thread-local heap cache eliminates the need of locking for
majority of heap allocations. Memory allocation speed is
Garbage collection pauses are shorter. The garbage collector
no longer excessively consumes the C stack.
The thread-local monitor cache enables synchronized methods
to run closer to the speed of normal methods.
Native Library JNI Port
Native libraries supporting core Java classes (e.g., AWT) have
been rewritten using the Java Native Interface (JNI). The
resulting code is more efficient and can run unmodified on
different Java Virtual Machines.
Just In Time (JIT) Compilers
JIT compilers are being included with the JDK. The Solaris
JIT compiler is available in the beta releases. The Win32 JIT compiler
will be available with the final release.