application commands
qos statistics volume performance show
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Display system performance data per volume
Availability: This command is available to cluster administrators at the admin privilege level.
Description
The qos statistics volume performance show command shows the current system performance that each volume is achieving.
The command displays the following data:
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The QoS volume name (Workload)
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The QoS workload ID (ID)
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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 volumes. Other columns in this row are either totals or averages.
Parameters
[-node {<nodename>|local}]- Node-
Selects the volumes that match this parameter value. If you do not specify this parameter, the command displays data for the entire cluster.
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[-rows <integer>]- Number of Rows in the Output -
Specifies the number of busiest QoS policy groups to display. The default setting is 10. The allowed range of values is 1 to 20.
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-vserver <vserver name>- Vserver Name -
Specifies the Vserver to which the volume belongs.
-volume <volume name>- Volume Name }-
Selects the performance data that match this parameter value. Enter a complete volume name or press the <Tab> key to complete the name. Wildcard query characters are not supported.
[-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.
[-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.
[-show-flexgroup-as-constituents {true|false}]- Display Flexgroups as Constituents-
If the parameter is specified and if the value is true, it will display data for FlexVols and Flexgroup Constituents. Otherwise it will display data for FlexVols and Flexgroups.
Examples
cluster1::> qos statistics volume performance show -iterations 100 -rows 3 Workload ID IOPS Throughput Latency --------------- ------ -------- ---------------- ---------- -total- - 97 1.90MB/s 216.87ms vol_2-wid104 104 28 1.75MB/s 412.78ms vol_1-wid103 103 25 100.00KB/s 169.16ms vs1vol0-wid102 102 13 52.00KB/s 403.78ms -total- - 98 1276.00KB/s 89.98ms vs1vol0-wid102 102 28 112.00KB/s 80.70ms vol_1-wid103 103 19 76.00KB/s 114.72ms vol_2-wid104 104 17 1088.00KB/s 257.60ms -total- - 78 1152.00KB/s 225.22ms vol_1-wid103 103 17 68.00KB/s 452.27ms vol_2-wid104 104 16 1024.00KB/s 419.93ms vs1vol0-wid102 102 15 60.00KB/s 210.63ms
The example above displays the system performance for the 3 volumes with the highest IOPS and it refreshes the display 100 times before terminating.
cluster1::> qos statistics volume performance show -vserver vs0 -volume vs0_vol0 -iterations 100 Workload ID IOPS Throughput Latency --------------- ------ -------- ---------------- ---------- -total- - 1278 639.17KB/s 404.00us vs0_vol0-wid1.. 15658 526 263.17KB/s 436.00us -total- - 1315 657.33KB/s 86.00us vs0_vol0-wid1.. 15658 528 264.17KB/s 88.00us -total- - 1220 609.83KB/s 418.00us vs0_vol0-wid1.. 15658 515 257.33KB/s 531.00us -total- - 1202 600.83KB/s 815.00us vs0_vol0-wid1.. 15658 519 259.67KB/s 924.00us -total- - 1240 620.17KB/s 311.00us vs0_vol0-wid1.. 15658 525 262.50KB/s 297.00us
The example above displays the system performance for volume vs0_vol0 in Vserver vs0 and it refreshes the display 100 times before terminating.