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Measures reported by XChgAvailSvcTest
The Microsoft Exchange Server 2007 Availability service improves information workers' calendaring and meeting scheduling experience by providing secure, consistent, and up-to-date free and busy information to computers running Microsoft Office Outlook 2007. Outlook 2007 uses the Autodiscover service to obtain the URL of the Availability service. The Autodiscover service is similar to the Domain Name System (DNS) Web service for Exchange 2007 Web services. Essentially, the Autodiscover service helps Outlook 2007 locate various Web services, such as the Unified Messaging (UM), Offline Address Book (OAB), and Availability services.
This test reports statistics indicating how healthy the Availability Service is.
The measures
made by this test are as
follows:
| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Availability_request_rate |
Indicates the number of requests serviced per second. |
Reqs/Sec |
The request can be only for free busy or include suggestions. One request may contain multiple mailboxes.
A very low request servicing rate could indicate a processing bottleneck.
|
| Avg_mailboxes_processed_rate |
Indicates the average number of mailboxes processed per request. |
Mailboxes/Req |
|
| Mailbox_session_cache_hit_rate |
Indicates the number of mailboxes opened per second without creating a new connection. |
Hits/Sec |
Ideally, this value should be high. A low cache hit rate could increase processing overheads.
|
| Mailbox_session_cache_miss_rate |
Indicates the number of mailboxes opened per second, by creating a new connection, because there is no available connection in the cache. |
Misses/Sec |
Ideally, this measure should be low. A very high cache miss rate could indicate insufficient connections in the cache to service requests. You might want to consider resizing the cache.
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