eG Monitoring
 

Measures reported by MariaDbUsaTest

Storage space contentions on a database can result in the loss of critical data. To avoid this, administrators should keep a close watch on the space usage/growth rate of each database, proactively detect a space crunch, and promptly resolve it. This is where the MariaDbUsaTest test helps. This test auto-discovers all the databases on the Maria Database server and monitors the size of each database. Alerts are promptly sent out if any database is running out of space. In the event of a space crunch in a database, you can also use this test to figure out what is causing the space drain - documents? or index files?

Outputs of the test : One set of results for each database on the server being monitored.

Measurement Description Measurement Unit Interpretation
DB_size Indicates the total size of this database. MB  
Data_length Indicates the total size of all the documents and padding stored in the database. MB The value of this measure will decrease when you delete documents, but will not decrease when documents shrink because the space used by the original document has already been allocated (to that particular document) and cannot be used by other documents. Alternatively if a user updates a document with more data, the value of this measure will remain the same as long as the new document fits within its originally padded pre-allocated space.
Growth_rate Indicates the rate at which the size of this database is growing. MB/sec The value of this measure is calculated using the following formula:

(Data size + Index size) of the current measurement period (-) (Data size + Index size) of the previous measurement period

A consistent increase in the value of this measure is a cause for concern, as it indicates a steady growth in database size.
Index_length Indicates the total size of all indexes created on this database. MB If the value of this measure is equal to the DB_size measure, then it indicates that the indices are consuming the entire space in the database. Comparing the value of this measure with that of the DB_size measure helps administrators to figure out whether documents are consuming the maximum space in the database or the indices are consuming the maximum amount of database space.