eG Monitoring
 

Measures reported by EMCCtraUtilTest

For any client or administrator, the performance of the storage system is the primary concern. For performance to be optimal it is imperative that all components within the system are working at high efficiency. To manage system performance and fix any potential issues, administrators needs to keep track of key performance indicators so that they are the first ones to know if there is any performance bottleneck. For EMC Centera storage, EMCCtraUtilTest can help in this regard.

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This test reports the key indicators of efficient performance like throughput, transaction rate, lookup time etc. By closely monitoring these measures, administrators may be alerted to investigate the reasons for the delays, storage issues etc., and resolve the issue before the overall performance of the storage system gets affected.

Outputs of the test : One set of result for target storage system.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
avreageThroughput Indicates the rate at which reads and writes are being performed. MB/Sec If the throughput is on a downward trend over a period of time, it may be an indication of underlying problem which needs to be investigated.
totalReadTransactions Indicates the total read transactions over the last measurement period. Number This number can be monitored over multiple measurements and if there is a constant downward trend, investigation may be required
averageReadTransactions Indicates the total read transactions in a second. Number This number can be monitored over multiple measurements and if there is a constant downward trend, investigation may be required
averageReadSize Indicates the average size of reads Kb/Transaction This number should be looked in conjunction with above measures, if the size of reads is large, the throughput and number of transactions will come down
readTransactionsPCT Percentage of read transactions out of total transactions. Percentage Gives an idea of how the storage is being used
maximumLookUpTime Indicates the maximum time taken for data object lookup during the measurement period. Milliseconds  
readDataPCT Percentage of read data out of total data.   Gives an idea of how the storage is being used
averageWritten Average rate at which data is being written to disk. MB/Sec This measure should be monitored over a period of time to isolate and identify the issue.
totalWriteTransactions Total number of write transactions over measurement period. Number This number can be monitored over multiple measurements and if there is a constant downward trend, investigation may be required
averageWriteTransactions Indicates the total write transactions over the last measurement period.   This number can be monitored over multiple measurements and if there is a constant downward trend, investigation may be required
averageWriteSize Indicates the average size of writes. Kb/Transaction This number should be looked in conjunction with above measures, if the size of reads is large, the throughput and number of transactions will come down
writeDataPCT Percentage of write data out of total data. Percentage  
writeTransactionsPCT Percentage of write transactions out of total transactions. Percentage