vb.net 2d barcode generator Figure 29-6 System Monitor graph view. in C#

Generator EAN13 in C# Figure 29-6 System Monitor graph view.

Figure 29-6 System Monitor graph view.
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7. You can highlight performance object counters in System Monitor to help you more easily view and interpret the performance metrics being returned. To highlight a particular performance object counter, click its name in the bottom pane and press Ctrl+H. The performance object counter is highlighted, as showm in Figure 29-7.
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Performance Tuning and Troubleshooting
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Figure 29-7 Highlighted performance monitor counter.
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8. Alternatively, you might want to use the histogram view to help you more easily identify which performance monitor counter is consuming the most resources. Click the View Histogram button in the toolbar or press Ctrl+B. Figure 29-8 shows the histogram view in System Monitor.
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Figure 29-8 System Monitor histogram view.
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The Performance Logs and Alerts tool is used to log performance-related metrics and generate alerts when an event occurs or a user-defined threshold is met. The Performance Logs and Alerts tool can be configured to run as a service and collect performance data automatically, which means that it does not require user interaction. The performance data can be displayed in a number of formats, including comma-separated, tab-separated, and a number of binary file formats. These files can be subsequently opened for analysis by the System Monitor tool, so they are a great way of sending performance data to other DBAs for analysis. Note
You can also collect the performance data directly to a SQL Server database, which I particularly find useful because you can then use your querying skills to manipulate the collected data.
When configuring alerts, you can specify a number of actions to be triggered when the alert fires, including these:
Sending a network message Starting a performance data log Running a program Note
You should not use the Performance Logs and Alerts tool to generate alerts based on SQL Server 2005 performance object counters. The ability of SQL Server Agent in SQL Server 2005 to create alerts based on the same performance object counters is far superior. Creating SQL Server performance condition alerts through SQL Server Agent is covered in 30, Using Profiler, Management Studio, and Database Engine Tuning Advisor.
Using the Performance Logs and Alerts Tool The ability to collect performance metrics for further analysis, for benchmarking, or for establishing a basline is a powerful capability of the Performance Logs and Alerts tool. To set up logging of performance counters using the Performance Logs and Alerts tool, follow these steps:
1. Click Start, Administrative Tools, and Performance to start the System Monitor tool. (If you do not see Administrative Tools from your Start menu, navigate to Control Panel first.) Ensure the Performance Logs and Alerts folder is selected. Figure 29-9 shows the default Performance Logs and Alerts folder.
Part VII
Performance Tuning and Troubleshooting
Figure 29-9 Performance Logs and Alerts.
2. Expand the Performance Logs and Alerts folder in the left pane of the Performance window. Right-click the Counter Logs folder and select the New Log Setting menu option. Type an appropriate name for your log settings in the New Log Settings dialog box, shown in Figure 29-10. Click the OK button to continue.
Figure 29-10 New Log Settings dialog box.
3. A window with the same name that you entered for your log file appears. The General tab, shown in Figure 29-11, allows you to add either performance objects or specific performance object counters from the local and remote computers. To add performance objects, click the Add Objects button. Alternatively, to add performance object counters, click the Add Counters button. Both buttons pop up the appropriate dialog box, allowing you to select the combination of performance monitor objects and counters you are interested in logging, as covered earlier.
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Database System Tuning
Figure 29-11 Counter Log Properties dialog box.
4. Once you have chosen the combination of performance monitor objects and counters you want to monitor, confirm that the sampling interval is appropriate for your requirements. Figure 29-12 shows the Process, SQLServer:Databases, SQLServer:General Statistics and SQLServer:Locks performance objects being selected and the interval changed to 10 seconds.
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