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Measures reported by MySQLCluThrdTest
This test tracks the threads executing on each node of the target MySQL Cluster database server and reports various performance statistics pertaining to them.
Outputs of the test : One set of results for each node in the target MySQL cluster database server being monitored
The measures made by this test are as follows:
| Measurement |
Description |
Measurement Unit |
Interpretation |
| Threads_cached |
Indicates the number of threads in the thread cache of this node currently. |
Number |
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| Threads_spawned |
Indicates the number of threads newly created to handle new connections on this node 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 on this node. |
Number |
A high value for this measure is indicative of a high load on each node of the target cluster database server. |
| Slow_launch_threads |
Indicates the number of threads that have taken more than slow_launch_time for creation on this node, 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. |
| Delayed_insert_threads |
Indicates the number of delayed insert handler threads that are in use on this node. |
Number |
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