# Monitor Destination Activity

Monitoring activities that report on destinations, including topics, queues and durables, can place a heavy burden on the EMS server. To minimize any negative impact on performance, a limit is placed on the number of entries that the server reviews.

If the EMS server has more than 200 destinations in the particular results screen, no data is immediately returned. Instead, you must use the query tools to refine the monitoring results:

- Destination Name Filter

  In the Query box, enter a destination name or partial name with pattern. This field supports the standard * and > patterns.

  If query results are already visible on the page, entering text in the Query box immediately filters those results. A server-side query is performed only after the Query button is clicked.

- Order

  Choose an order preference from this drop-down box. For example, you can chose to order results by name, subscriber count, size, or several other criterion. If you choose to order based on a numeric field, destinations with the largest value are returned first. That is, Central Administration determines the results by collecting the records with the greatest value for the specified field.

- Retrieve Count

  This tool allows you to control the number of results that are returned. The options available are:

  - Retrieve By Page — (Available for topics and queues only.) Retrieves a page of 50 filtered but unsorted records at a time. Use the Next and Previous buttons to retrieve additional pages or return to a previously retrieved page of results. There is no limit on the number of pages that can be requested.
  - Retrieve Default Count — Retrieves matching records up to the default limit of 200 items.
  - Retrieve Max Count— Retrieves up to 5,000 matching records.
  - Customize — Select this option to input the number of records you would like to retrieve. Any integer from 1 to 5000 may be entered. Note that this custom value does not apply to the Retrieve By Page option, which always retrieves 50 records per page.

Click Query to retrieve the list of matching records.

Note that to rank the results, Central Administration has to read and process each element. As a result, these queries can put a heavy burden on the EMS server.

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