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Measures reported by IMSStoreLockTest
The iPlanet messaging server instance message store contains a database (Berkley DB) that stores information about the mailboxes on the server and stores quota information about the mailboxes. The state of DB-locks is held by different server processes. These database locks can affect the performance of the message store. The IMSStoreLockTest monitors the behaviour of the database locks. The measures made by this test are as follows:
| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Lock_requeusts
|
The rate of database lock requests
|
Reqs/Sec
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| Lock_releases
|
The rate of database lock releases |
Reqs/Sec
|
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| Deadlocks_occured
|
The rate of deadlocks |
Deadlocks/Sec
|
A non zero value for this measure is indicative of the occurrence of a deadlock in the message store database. In case of deadlocks, messages will not be getting inserted into the store at reasonable speeds and the ims-ms channel queue will grow larger as a result. The stored utility will automatically perform Deadlock detection and rollback of deadlocked database transactions.
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