ONTAP Discussions

how do you read "statistics aggregate show" command

Terrydari123

Hello all, 

 

What is the best way to read the output here?

I have the highest latency at 10000, Write BPS at 33382176, etc

If there is a doc that can explain all the items I would really appreciate.

 

Thanks

1 ACCEPTED SOLUTION

Ontapforrum

statistics aggregate show: (Strangely Ontap docs does not cover the Bps & latency part for that command)
https://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm-cmpr-960/statistics__aggregate__show.html?lang=en


For example: The "statistics aggregate show" command continuously displays performance data for aggregates at a regular interval (default/minimum 5 seconds).

 

In your case:
Bps:33382176 Bytes/sec equivalent to 33.38 MBps
Average latency for an operation in microsecond: 10000 equivalent to 10ms

 

If you are interested to know what "Bps" & "Latency" units are, then you can refer to:
https://docs.netapp.com/ontap-9/index.jsp?topic=%2Fcom.netapp.doc.dot-cm-cmpr-991%2Fstatistics__workload__show.html

 

Anyway, are you just looking for the explanation around those parameters, or you are dealing with a performance related issue at your place ? Just fyi: There is no general metrics for IOPS/Latency, everything is interdependent. Fortunately, cDOT/ONTAP has many layers of virtualization and each layer has it's specific QoS statistics to help you narrow down the issue. Therefore, just reading those numbers(stats)without any context, isn't much use unless there is a 'slowness/performance' related issue reported from the front-end applications (databse/exchange/vmware/Fileshare etc) for whatever protocols.

 

Qos statistics is a great tool available to ONTAP, that can provide a point-in-time statistics of resource utilization of workloads, on a per-node basis.

 

Some Kbs worth a read:
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Is_my_controller_overloaded%3F
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Potential_performance_impact_due_to_low_aggregate_free_space
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/How_to_collect_WAFLTOP_output_from_CLI
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Infrastructure_Management/Active_IQ_Unified_Manager/Why_Aggregate_Latency_graph_in_UM%2C_shows_c...

View solution in original post

1 REPLY 1

Ontapforrum

statistics aggregate show: (Strangely Ontap docs does not cover the Bps & latency part for that command)
https://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm-cmpr-960/statistics__aggregate__show.html?lang=en


For example: The "statistics aggregate show" command continuously displays performance data for aggregates at a regular interval (default/minimum 5 seconds).

 

In your case:
Bps:33382176 Bytes/sec equivalent to 33.38 MBps
Average latency for an operation in microsecond: 10000 equivalent to 10ms

 

If you are interested to know what "Bps" & "Latency" units are, then you can refer to:
https://docs.netapp.com/ontap-9/index.jsp?topic=%2Fcom.netapp.doc.dot-cm-cmpr-991%2Fstatistics__workload__show.html

 

Anyway, are you just looking for the explanation around those parameters, or you are dealing with a performance related issue at your place ? Just fyi: There is no general metrics for IOPS/Latency, everything is interdependent. Fortunately, cDOT/ONTAP has many layers of virtualization and each layer has it's specific QoS statistics to help you narrow down the issue. Therefore, just reading those numbers(stats)without any context, isn't much use unless there is a 'slowness/performance' related issue reported from the front-end applications (databse/exchange/vmware/Fileshare etc) for whatever protocols.

 

Qos statistics is a great tool available to ONTAP, that can provide a point-in-time statistics of resource utilization of workloads, on a per-node basis.

 

Some Kbs worth a read:
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Is_my_controller_overloaded%3F
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Potential_performance_impact_due_to_low_aggregate_free_space
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/How_to_collect_WAFLTOP_output_from_CLI
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Infrastructure_Management/Active_IQ_Unified_Manager/Why_Aggregate_Latency_graph_in_UM%2C_shows_c...

View solution in original post

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