Performance Logs and Alerts interface
In Performance Logs and Alerts you define settings for counter logs, trace logs, and alerts. The details pane of the console window shows logs and alerts that you have created. You can define multiple logs or alerts to run simultaneously. Each log or alert is a saved configuration that you define. If you have configured the log for automatic starting and stopping, a single log can generate many individual log data files. For example, if you were generating a log file for each day's activity, one file would close at 11:59 P.M. today, and a new file would open at 12:00 A.M. tomorrow. The following table explains the query summary information provided by the columns in the details pane.
To see the parameters defined for each log, double-click the list entry for the log. In the dialog box that appears, you can choose how to name your log files, when logging is scheduled to occur, and what performance objects and counters you want to monitor in your log.
If a log is currently running and collecting data (based on the schedule you defined for the log or alert), a green data icon appears next to the log or alert. If a red icon appears, the log or alert has been defined but is not currently running.