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This test auto-discovers the top indexes that are I/O intensive and for each index, reports the wait time and the read/write latency. Using this test, administrators can figure out the index that is experiencing slowness due to high read and write latencies.

Outputs of the test : One set of results for every index in the target MySQL Database instance

Measurement	Description	Measurement Unit	Interpretation
WaitCount	Indicates the number of waits recorded on this index during the last measurement period.	Number
AverageWaitTime	Indicates the average time spent by a query per wait to fetch data from this index during the last measurement period.	Seconds/Wait
MinWaitTime	Indicates the minimum time spent by a query per wait to fetch data from this index during the last measurement period.	Seconds/Wait
MaxWaitTime	Indicates the maximum time spent by a query per wait to fetch data from this index during the last measurement period.	Seconds/Wait	Ideally, the value of this measure should be low. A sudden/gradual increase in the value of this measure is a cause of concern. Compare the value of this measure across indexes to identify the index that is experiencing maximum wait time.
AverageReadLatency	Indicates the average time taken to read from this index during the last measurement period.	Seconds/Read
MinReadLatency	Indicates the minimum time taken to read from this index during the last measurement period.	Seconds/Read
MaxReadLatency	Indicates the maximum time taken to read from this index during the last measurement period.	Seconds/Read	Ideally, the value of this measure should be low. A sudden/gradual increase in the value of this measure is a cause of concern. Compare the value of this measure across indexes to identify the index that is experiencing maximum read latency.
AverageWriteLatency	Indicates the average time taken to write into this index during the last measurement period.	Seconds/Write
MinWriteLatency	Indicates the minimum time taken to write into this index during the last measurement period.	Seconds/Write
MaxWriteLatency	Indicates the maximum time taken to write into this index during the last measurement period.	Seconds/Write	Ideally, the value of this measure should be low. A sudden/gradual increase in the value of this measure is a cause of concern. Compare the value of this measure across indexes to identify the index that is experiencing maximum write latency.
AverageFetchLatency	Indicates the average time taken to fetch the records from this index during the last measurement period.	Seconds/Fetch
MinFetchLatency	Indicates the minimum time taken to fetch the records from this index during the last measurement period.	Seconds/Fetch
MaxFetchLatency	Indicates the maximum time taken to fetch the records from this index during the last measurement period.	Seconds/Fetch	Ideally, the value of this measure should be low. A sudden/gradual increase in the value of this measure is a cause of concern. Compare the value of this measure across indexes to identify the index that is consuming maximum time to fetch records.
AverageInsertLatency	Indicates the average latency noticed while inserting data into this index during the last measurement period.	Seconds/Insert
MinInsertLatency	Indicates the minimum latency noticed while inserting data into this index during the last measurement period.	Seconds/Insert
MaxInsertLatency	Indicates the maximum latency noticed while inserting data into this index during the last measurement period.	Seconds/Insert	Ideally, the value of this measure should be low. A sudden/gradual increase in the value of this measure is a cause of concern. Compare the value of this measure across indexes to identify the index that is consuming maximum time while data is inserted into the index.
AverageUpdateLatency	Indicates the average latency noticed while updating this index during the last measurement period.	Seconds/Update
MinUpdateLatency	Indicates the minimum latency noticed while updating this index during the last measurement period.	Seconds/Update
MaxUpdateLatency	Indicates the maximum latency noticed while updating this index during the last measurement period.	Seconds/Update	Ideally, the value of this measure should be low. A sudden/gradual increase in the value of this measure is a cause of concern. Compare the value of this measure across indexes to identify the index that is consuming maximum time while updating the index.
AverageDeleteLatency	Indicates the average latency noticed while deleting this index during the last measurement period.	Seconds/Update
MinDeleteLatency	Indicates the minimum latency noticed while deleting this index during the last measurement period.	Seconds/Update
MaxDeleteLatency	Indicates the maximum latency noticed while deleting this index during the last measurement period.	Seconds/Update	Ideally, the value of this measure should be low. A sudden/gradual increase in the value of this measure is a cause of concern. Compare the value of this measure across indexes to identify the index that is consuming maximum time while being deleted.