topic Re: Any NMSDK API to get performance data like OPS and latency for storage controller? in Software Development Kit (SDK) and API Discussions

Any NMSDK API to get performance data like OPS and latency for storage controller?

lb98 — Wed, 04 Jun 2025 18:26:44 GMT

I can get OPS data for controller event at cluster mode from CLI:

dataontap-vsim-cluster::> statistics node show

dataontap-vsim-cluster : 10/31/2016 13:55:26

CPU *Total Latency

Node (%) Ops (ms)

------------------ --- ------ -------

dataontap-vsim-cm1 25 32 -

dataontap-vsim-cm2 6 4 -

But I do not know in how to get IOPS and latency of a controller using NMSDK API? I would assume I should try this:

perf-object-get-instances>
<counters>
<counter></counter>
</counters>
<filter-data></filter-data>
<instance-uuids>
<instance-uuid></instance-uuid>
</instance-uuids>
<instances>
<instance></instance>
</instances>
<objectname></objectname>
<privilege-level></privilege-level>
</perf-object-get-instances>

But I do not find objectname related to controller perfromance.

Any help on this will be greatly appreciated.

thanks!

Re: Any NMSDK API to get performance data like OPS and latency for storage controller?

asulliva — Tue, 01 Nov 2016 17:33:00 GMT

Hello @lb98,

Use the "system:node" set of counters to get, among other things, node operations.

Hope that helps.

Andrew

Re: Any NMSDK API to get performance data like OPS and latency for storage controller?

lb98 — Tue, 01 Nov 2016 19:15:37 GMT

Thanks!

For 7-mode, I was able to use system to get controller IOPS and latency value:

<?xml version="1.0" encoding="UTF-8"?>
<netapp xmlns="http://www.netapp.com/filer/admin" version="1.21">
<perf-object-get-instances>
<instances>
<instance>system</instance>
</instances>
<objectname>system</objectname>
</perf-object-get-instances>
</netapp>

For C-mode, I was able to use what you suggested to get controller IOPS and latency:

<?xml version="1.0" encoding="UTF-8"?>
<netapp xmlns="http://www.netapp.com/filer/admin" version="1.21">
<perf-object-get-instances>
<instances>
<instance>dataontap-vsim-cm1</instance>
</instances>
<objectname>system:node</objectname>
</perf-object-get-instances>
</netapp>

Do you know any documentation doucumented what aggregated object name I can use like system: node , volume: node etc?

I only have this copy:

NetApp® Unified Storage Performance Management Using Open Interfaces
Network Appliance, Inc.
March 2010

Though it is very helpful, but I do not see any place in it document all the aggregated( or combined) object names can be used.

Thanks again!

Re: Any NMSDK API to get performance data like OPS and latency for storage controller?

asulliva — Wed, 02 Nov 2016 13:57:19 GMT

I don't know that the counters are in the documentation anywhere, but you can pull the information using the "perf-object-counter-list-info" API (or the "Get-NcPerfCounter" PowerShell cmdlet). There's some examples here.

Andrew

Re: Any NMSDK API to get performance data like OPS and latency for storage controller?

lb98 — Thu, 03 Nov 2016 15:27:07 GMT

actually I tried to use the object name you mentioned on our NetApp simulator. I found controller (node) latency data in C-mode was never populated:

<?xml version="1.0" encoding="UTF-8"?>
<netapp xmlns="http://www.netapp.com/filer/admin" version="1.21">
<perf-object-get-instances>
<counters>
<counter>sys_avg_latency</counter>
<counter>system_ops</counter>
</counters>
<instances>
<instance>dataontap-vsim-cm1</instance>
</instances>
<objectname>system:node</objectname>
</perf-object-get-instances>
</netapp>

output:

<?xml version='1.0' encoding='UTF-8' ?>
<netapp version='1.30' xmlns='http://www.netapp.com/filer/admin'>

<results status='passed'>
<instances>
<instance-data>
<aggregation>
<aggregation-data>
<constituent-count>1</constituent-count>
<result>complete_aggregation</result>
</aggregation-data>
</aggregation>
<counters>
<counter-data>
<name>sys_avg_latency</name>
<value>0</value>
</counter-data>
<counter-data>
<name>system_ops</name>
<value>130489443</value>
</counter-data>
</counters>
<name>dataontap-vsim-cm1</name>
<uuid>be89058c-e786-11e4-82ba-dfc30ffeb3ee</uuid>
</instance-data>
</instances>
<timestamp>1478186585</timestamp>
</results>
</netapp>

Even from CLI, I can not see controller latency data:

dataontap-vsim-cluster::> statistics node show

dataontap-vsim-cluster : 11/2/2016 19:58:38

CPU *Total Latency

Node (%) Ops (ms)

------------------ --- ------ -------

dataontap-vsim-cm1 28 89 -

dataontap-vsim-cm2 25 8 -

Is this the issue of a simulator or NetApp does not report latency data on C-mode controller( node)?

Thanks again!