Check the Chat Community Load

When you monitor capacity, you compare actual usage to available resources. Capacity monitoring provides advance warning of resource shortages.

You can monitor physical resource capacity for a server running the Chat Service (a physical resource reaches capacity when it is busy 100 percent of the time), or you can monitor Chat Service user capacity. For example, when user requests for Chat Service are delayed, it may indicate that a service is reaching capacity. You can also use Performance Monitor to check real-time performance.

Use the following counters to monitor how the server is running:

• % Processor Time (Processor object)..  This counter should not exceed 90 percent. Chat Service is highly dependent on the CPU. Excessive usage indicates a need for additional hardware or an attack on the server.
• Available Bytes (Memory object)..  Less than 10 percent of available free memory can indicate excessive processing or a software error.

Tip   Set up capacity and performance logging and monitoring at the same time so you can analyze both sets of data simultaneously.

To monitor capacity on your Chat server:

1. Start Performance
   On the Start menu, point to Programs, point to Administrative Tools, and then click Performance.
2. In the console tree, click System Monitor, and then click + (Add) on the toolbar.
3. In Select counters from computer, select the server you want to monitor.
4. In Performance Object, click the Microsoft Exchange Chat Community object.
5. Select one of the following Performance Monitor Counters:
   • Click All counters if you want to monitor the total load.
   • Click Select counters from list to narrow the scope of your test.

   • To select several counters at the same time, hold down the CTRL key while you click the counters.

   Tip   For example, Server operations queued/sec is a valuable counter to monitor server loading.

6. Click Add, and then select one of the following options:
   • Click All instances for complete coverage.
   • Click Select instances from list to narrow the scope of your test.
7. Click Close.
8. To adjust the scale on a counter, double-click the counter name at the bottom of the screen. Click Scale, and then choose a scale.

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