SYMMETRIC MULTI-PROCESSOR LOCK TRACING

摘要

PURPOSE: A symmetric multi-processor lock tracing is provided to improve the performance of an application program using stored data in a lock trace table. CONSTITUTION: A lock testing tool determines whether a predetermined thread meets a spin threshold(330). The predetermined thread is currently used in a multi-processor system. The lock testing tool starts a lock tracing operation in response to the access to the spin threshold of the predetermined thread(370). If the other thread uses the first lock on the memory position, the predetermined thread wait in order to access to the memory position.