eG Monitoring
 

Measures reported by MySQLSesWaitEvtTest

This test monitors wait events to reveal the events per wait class, and the average wait time experienced by the events of a class. Using the metrics reported by this test, DBAs can isolate the type of wait events that are occurring frequently on the database server, and how long such events last. Since the wait class reveals the source of the frequent wait events, from here, all the administrator needs to do is perform simple sequence of diagnostics to figure out why events of this type recur on the database server.

Outputs of the test : One set of results for every wait class on the MySQL server monitored.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
AvgWaitingSessions Indicates the sum of wait times of all wait events of this wait class during this measurement period. Seconds  
NumOfWaitingSessions This measure indicates the percentage of waits for each wait class during this measurement period. Number  
MaxWaitingSessions Indicates the maximum time taken by a wait event among all wait events of this wait class during this measurement period. Seconds If the value of this measure is unusually high, then you can use the detailed diagnosis of the measure to accurately identify that wait event under the class that has contributed to the increase in wait time.