The present invention is directed to a system and method for monitoring system performance by using a multi-phase approach. The first phase, referred to as the burst counting phase, utilizes a set of counters to identify calls and returns which are heavily used. In the second phase, referred to as the...http://www.google.com.hk/patents/US5896538?utm_source=gb-gplus-share專利 US5896538 - System and method for multi-phased performance profiling of single-processor and multi-processor systems