What performance counters can be tracked using thresholds
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Some common performance counters, such as IOPS and MB/s, can have thresholds set for all storage objects. There are other counters that can have thresholds set for only certain storage objects.
Available performance counters
| Storage object | Performance counter | Description |
|---|---|---|
Cluster |
IOPS |
Average number of input/output operations the cluster processes per second. |
MB/s |
Average number of megabytes of data transferred to and from this cluster per second. |
Node |
IOPS |
Average number of input/output operations the node processes per second. |
MB/s |
Average number of megabytes of data transferred to and from this node per second. |
Latency |
Average number of milliseconds the node takes to respond to application requests. |
Utilization |
Average percentage of the node's CPU and RAM that is being used. |
Performance Capacity Used |
Average percentage of performance capacity that is being consumed by the node. |
Performance Capacity Used - Takeover |
Average percentage of performance capacity that is being consumed by the node, plus the performance capacity of its partner node. |
Aggregate |
IOPS |
Average number of input/output operations the aggregate processes per second. |
MB/s |
Average number of megabytes of data transferred to and from this aggregate per second. |
Latency |
Average number of milliseconds the aggregate takes to respond to application requests. |
Utilization |
Average percentage of the aggregate's disks that are being used. |
Performance Capacity Used |
Average percentage of performance capacity that is being consumed by the aggregate. |
Storage Virtual Machine (SVM) |
IOPS |
Average number of input/output operations the SVM processes per second. |
MB/s |
Average number of megabytes of data transferred to and from this SVM per second. |
Latency |
Average number of milliseconds the SVM takes to respond to application requests. |
Volume |
IOPS |
Average number of input/output operations the volume processes per second. |
MB/s |
Average number of megabytes of data transferred to and from this volume per second. |
Latency |
Average number of milliseconds the volume takes to respond to application requests. |
Cache miss ratio |
Average percentage of read requests from client applications that are returned from the volume instead of being returned from cache. |
LUN |
IOPS |
Average number of input/output operations the LUN processes per second. |
MB/s |
Average number of megabytes of data transferred to and from this LUN per second. |
Latency |
Average number of milliseconds the LUN takes to respond to application requests. |
Namespace |
IOPS |
Average number of input/output operations the namespace processes per second. |
MB/s |
Average number of megabytes of data transferred to and from this namespace per second. |
Latency |
Average number of milliseconds the namespace takes to respond to application requests. |
Port |
Bandwidth utilization |
Average percentage of the port's available bandwidth that is being used. |
MB/s |
Average number of megabytes of data transferred to and from this port per second. |
Network Interface (LIF) |
MB/s |
|
Performance capacity data is available only when the nodes in a cluster are installed with ONTAP 9.0 or later software. |