Reduced Synchronization Overhead

The following features result in enhanced performance as a result of reduced synchronization overhead for multithreaded applications.

Fast-Sync Monitor Locking/Fast Thread Synchronization

The Java 2 SDK for Solaris uses a new, internal, fast-locking algorithm for more efficient method synchronization. The VM has significantly improved implementations of the Java platform's synchronization primitives. These implementations make concurrent programs more efficient and decrease the impact of the synchronization primitives on single-threaded application performance.

Lock Contention Minimization

The Java 2 SDK for Solaris minimizes lock contention in the VM by using thread-local data structures and finer-grained locking.

The VM core-locking architecture supports better granularity of VM locks. This fine-grained locking minimizes the number of contended paths of thread execution. Fewer contended paths means that one thread's execution is less likely to impede other threads. This results in better multiprocessor (MP) scaling capability. Fine-grained locking also enables the VM to conduct a larger number of concurrent operations.