qos statistics performance show
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Display system performance data per QoS policy group
Availability: This command is available to cluster administrators at the admin privilege level.
Description
The qos statistics performance show command shows the current system performance levels that QoS policy groups are achieving.
The command displays the following data:
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The QoS policy group name (Policy Group)
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Input/output operations performed per second (IOPS)
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Throughput in kilobytes per second (KB/s) or megabytes per second (MB/s) as appropriate (Throughput)
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Latency observed per request in microseconds (us) or milliseconds (ms) as appropriate (Latency)
The results displayed per iteration are sorted by IOPS. Each iteration starts with a row that displays the total IOPS used across all QoS policy groups. Other columns in this row are either totals or averages.
Parameters
[-node {<nodename>|local}]- Node-
Selects the policy groups that match this parameter value. If you do not specify this parameter, the command displays data for the entire cluster.
[-iterations <integer>]- Number of Iterations-
Specifies the number of times the display is refreshed before terminating. If you do not specify this parameter, the command iterates until interrupted by Ctrl-C.
- {
[-rows <integer>]- Number of Rows in the Output -
Specifies the number of busiest QoS policy groups to display. Valid values are from 1 to 20. The default value is 10.
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[-policy-group <text>]- QoS Policy Group Name -
Selects the QoS policy group whose name matches the specified value. If you do not specify this parameter, the command displays data for all QoS policy groups.
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[-adaptive-policy-group <text>]- Adaptive QoS Policy Group Name } -
Selects the QoS adaptive policy group whose name matches the specified value. If you do not specify this parameter, the command displays data for all QoS policy groups.
[-refresh-display {true|false}]- Toggle Screen Refresh Between Each Iteration-
Specifies the display style. If true, the command clears the display after each data iteration. If false, the command displays each data iteration below the previous one. The default is false.
Examples
cluster1::> qos statistics performance show -iterations 100 -rows 4 Policy Group IOPS Throughput Latency -------------------- -------- --------------- ---------- -total- 79 1296.00KB/s 337.41ms _System-Best-Effort 25 0KB/s 0ms vol1 24 96.00KB/s 193.72ms vol2 18 1152.00KB/s 750.98ms vs1vol0 12 48.00KB/s 707.38ms -total- 109 1.99MB/s 133.27ms _System-Best-Effort 35 0KB/s 0ms vol2 29 1.81MB/s 249.27ms vs1vol0 24 96.00KB/s 48.32ms vol1 21 84.00KB/s 292.30ms
The example above displays the system performance for the 4 QoS policy groups with the highest IOPS and it refreshes the display 100 times before terminating.
cluster1::> qos statistics performance show -iterations 100 -policy-group pg1 Policy Group IOPS Throughput Latency -------------------- -------- --------------- ---------- -total- 2833 10.66MB/s 924.00us pg1 2655 10.37MB/s 917.00us -total- 2837 10.65MB/s 923.00us pg1 2655 10.37MB/s 917.00us -total- 2799 10.73MB/s 802.00us pg1 2737 10.69MB/s 815.00us -total- 2930 13.33MB/s 905.00us pg1 2720 10.62MB/s 858.00us
The example above displays the system performance for the QoS policy group pg1 and refreshes the display 100 times before terminating.