Maria Wait Events Test

In SQL Server, wait types represent the discrete steps in query processing, where a query waits for resources as the instance completes the request. By analyzing wait types and their wait times, administrators can receive quick and objective evidence of performance bottlenecks and their probable causes. The Maria Wait Events test enables this analysis. For every type of wait that is currently experienced by the server, this test reports the number, nature, and duration of waits, thereby leading you to the specific wait types that may have contributed to a general slowdown/deterioration in server performance.

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 target Maria Database server 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.

Idle Time

Specify the time duration (in seconds) above which the processes that are waiting in the database will be regarded as idle. 

Detailed Diagnosis

To make diagnosis more efficient and accurate, the eG Enterprise suite embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

  • The eG manager license should allow the detailed diagnosis capability
  • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Total wait events

Indicates the total number of wait events that are currently occurring on the database server.

Number

 

Read wait events

Indicates the events that are currently waiting for read operations on the database server.

Number

The detailed diagnosis of this measure reveals the Thread ID, Event ID, name of the event, the start time, end time, the duration of the event and the operations performed on the source.

Read wait event rate

Indicates the rate at which wait events occurred for reading operations on the database server during the last measurement period.

Events/sec

 

Maximum duration for read waits

Indicates the maximum time taken by a wait event for a read operation.

Seconds

A low value is desired for this measure.

Write wait events

Indicates the number of events that are currently waiting for write operations to be performed on the database server.

Number

 

Write wait events rate

Indicates the rate at which wait events occurred for performing write operations on the database server during the last measurement period.

Events/sec

 

Maximum duration for write waits

Indicates the maximum time taken by a wait event to perform write operation on the database server.

Seconds

A low value is desired for this measure.

Lock wait events

Indicates the number of events that are currently waiting for a lock operation on the database server.

Number

 

Lock wait events rate

Indicates the rate at which wait events were created to perform lock operations on the database server during the last measurement period.

Events/sec

 

Maximum duration for lock waits

Indicates the maximum duration taken by a wait event to perform lock operation on the database server.

Seconds

A low value is desired for this measure.