To use logged data
Right-click the System Monitor details pane and click Properties.
Click the Source tab.
Under Data Source, click Log files, and then add the file(s) you want to use as a datasource.
To add files to the list, click the Add button to open the Select Log File dialog box. Double-click the name of the file(s) you want to open.
Or, to remove files from this list, click the Remove button.
Click Time Range. To specify the time range in the log file(s) that you want to view, drag the bar or its handles for the appropriate starting and ending times.
Click the Data tab and click Add to open the Add Counters dialog box. The counters you selected during log configuration are shown. You can include all or some of these in your graph.
To open Performance, click Start, click Control Panel, click Performance and Maintenance, click Administrative Tools, and then double-click Performance.
Unless you specifically want to monitor start-up events, you should exclude times that include such events from your time window because these temporary high values tend to skew overall performance results.
The button on the toolbar is disabled when you are viewing log data.
You can also view counter-log data by opening files that have been saved in comma-separated or tab-separated format using Microsoft Excel.
To view data from a SQL Database, click the Source tab. Then, under Data Source, click the Database button, and then select the System DSN name and Log Set from the drop-down list. In order to access the SQL database, the System Data Source Name (System DSN) must be predefined, and privileges granted to write to the database. The Log Set, specified by the DSN, must already be created in the database.
You can also select either multiple or nonadjacent counters from the Select counters from list. To select multiple counters hold down the SHIFT and DOWN ARROW keys. To select nonadjacent counters hold down the CTRL key, click Select counters from list, and then click the counters you want to use from this list.