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.
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 |
Confirm Password |
Confirm the password by retyping it here. |
SSL |
This indicates that the eG agent will communicate with the Maria Database via HTTPS or not. By default, this flag is set to No, as the target Maria database is not SSL-enabled by default. If the target database is SSL-enabled, then set this flag to Yes. |
Verify CA |
If the eG agent is required to establish an encrypted connection with the target Maria Database server by authenticating the server's identity through verifying the server CA certificate, set Verify CA flag to Yes. By default, this flag is set to No. |
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 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:
|
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. |