Maria Queries Test

This test reports the performance statistics pertaining to the queries executed on the Maria Database server.

Target of the test : A Maria Database server

Agent deploying the test : An internal/remote agent

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

Configurable parameters for the test
Parameter	Description
Test Period	How often should the test be executed.
Host	The IP address of the Maria Database server.
Port	The port on which the server is listening.
Database	Specify the name of the database that is to be monitored on the target Maria Database server
User and Password	The eG agent has to be configured with the credentials of a user who has server-wide PROCESS and SELECT privileges on the monitored Maria Database server. To know how to create such a user, refer to Configuring the eG Agent with Access Privileges section.
Confirm Password	Confirm the password by retyping it here.

Measurements made by the test
Measurement	Description	Measurement Unit	Interpretation
Query rate	Indicates the rate at which queries are sent to the server.	Queries/Sec	This is an indicator of server workload.
Slow queries	Indicates the number of queries that have taken more than the ‘long_query_time’ for execution, during the last measurement period.	Number	This value should ideally be 0. If it remains consistently high, the administrator should look to identify and optimize the slow queries.
Index first entry read count	Indicates the number of times the first entry was read from an index during the last measurement period.	Number	If the value of this measure is high, it suggests that the server is doing a lot of full index scans.
Row read requests based on a key	Indicates the number of requests that were received in the last measurement period, to read a row based on a key.	Number	If the value of this measure is high, it indicates that your queries and tables are properly indexed.
Next row read requests based on key order	Indicates the number of requests received in the last measurement period, to read the next row in the key order.	Number	This will be incremented if you are querying an index column with a range constraint. This will also be incremented if you are doing an index scan.
Previous row read requests based on key order	Indicates the number of requests received in the last measurement period, to read the previous row in the key order.	Number	This is mainly used to optimize ORDER BY... DESC.
Row read requests based on a fixed position	Indicates the number of requests received in the last measurement period, to read a row based on a fixed position.	Number	This will be high if you are executing a lot of queries that require sorting of the result. If the value of this measure is high, then you probably have a lot of queries that require Maria database server to scan whole tables or you have joins that do not use keys properly.
Next row read requests in the datafile	Indicates the number of requests received in the last measurement period, to read the next row in the datafile.	Number	This will be high if you are performing a lot of table scans. Generally, this suggests that your tables are not properly indexed or that your queries are not written to use the indexes properly.