Performance Sentinel - Version 2.8 Performance Sentinel monitors, notifies, and logs the performance of Windows NT/2000/XP computers. It groups performance into four major subsystems (CPU, memory, disk, and network) and monitors the relevant counters within each subsystem. If a counter exceeds a threshold value for a period of time, then a notification can be sent out.Performance Sentinel is designed like all of our Sentinel products with an easy-to-use interface of computers on the left and statistics about the computer on the right. It doesn't require any agents to be installed or run on the computers being monitored. Its unique feature is that it notifies only when the average value remains above a threshold for a certain period of time, not just when it exceeds the threshold. Notification is done through email, pager, computer message, SNMP trap, log file, Event Viewer, or its own log file. It runs as a service without needing manual monitoring, though it does process statistics in real time.