Performance monitoring refers to the collecting, viewing, and analyzing of performance data such as processor usage, disk usage, memory usage, and other statistics for a computer. Performance monitoring can involve displaying performance data in real time or collecting performance data and saving it in log files that can be analyzed later.
Performance monitoring is based upon an always-present, always-on instrumentation infrastructure in Windows by which numeric information concerning operating system and application performance data is grouped into categories, counters, and instances. This performance data can be accessed in the following ways:
Using the Performance Monitor snap-in in Microsoft Management Console (MMC)