MySQL Threads Test

This test tracks the MySQL server threads and reports various performance statistics pertaining to them.

Target of the test : A MySQL 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
  1. TEST PERIOD – How often should the test be executed
  2. Host – The IP address of the MySQL server
  3. Port – The port on which the server is listening
  4. db – the name of a database on the server
  5. Usernameand 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 MySQL server. To know how to create such a user, refer to Pre-requisites for Monitoring the MySQL Server topic.
  6. Confirm password – Confirm the password by retyping it here.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Threads cached:

Indicates the number of threads in the thread cache currently.

Number

 

Threads spawned:

 

Indicates the number of threads newly created to handle new connections during the last measurement period.

Number

Where possible ensure that the number of total threads is not set to be much larger than the maximum number of simultaneous requests expected for the server.

Threads active:

Indicates the number of threads that are currently active.

Number

A high value for this measure is indicative of a high load on database server.

Slow launch threads:

Indicates the number of threads that have taken more than slow_launch_time for creation, during the last measurement period.

Number

A high value for this measure could cause excessive delay in processing new connection requests to the database server.

Delated insert threads:

Indicates the number of delayed insert handler threads in use.

Number