Data ONTAP 8.2 Reference - qos statistics workload characteristics show

qos statistics workload characteristics show

Display QoS workload characterization

Availability: This command is available to cluster administrators at the admin privilege level.

Description

The qos statistics workload characteristics show command displays data that characterizes the behavior of QoS workloads.

The command displays the following data:

The QoS workload name (Workload)
The QoS workload ID (ID)
Input/output operations performed per second (IOPS)
Throughput achieved in kilobytes per second (KB/s) or megabytes per second (MB/s) as appropriate (Throughput)
Request size in bytes (B) (Request size)
Read percentage from total IOPS (Read)
Concurrency, which indicates the number of concurrent users generating the I/O traffic (Concurrency)

The results displayed per iteration are sorted by IOPS. Each iteration starts with a row that displays the total IOPS used across all QoS workloads. Other columns in this row are either totals or averages.

Parameters

[-node {<nodename>|local}] - Node

Selects the QOS workloads 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 workloads to display. The default setting is 10. The allowed range of values is 1 to 20.

[-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 workload characteristics show -iterations 100 -rows 4
Workload          ID     IOPS      Throughput      Request size    Read  Concurrency
--------------- ------ -------- ---------------- --------------- ------- -----------
-total-              -       68       176.00KB/s           2650B      7%           8
vs1vol0-wid102     102       24        96.00KB/s           4096B     20%          13
_Scan_Besteff..    101       23            0KB/s              0B      0%           0
vol_1-wid103       103       20        80.00KB/s           4096B      0%          12
vol_2-wid104       104        1            0KB/s              0B      0%           0
-total-              -      157       528.00KB/s           3443B      3%           4
vol_2-wid104       104       48       192.00KB/s           4096B      0%           9
vol_1-wid103       103       43       172.00KB/s           4096B      0%           0
vs1vol0-wid102     102       41       164.00KB/s           4096B     14%           6
_Scan_Besteff..    101       25            0KB/s              0B      0%           0
-total-              -      274      1016.00KB/s           3797B      2%           2
vs1vol0-wid102     102       85       340.00KB/s           4096B      8%           4
vol_2-wid104       104       85       340.00KB/s           4096B      0%           1
vol_1-wid103       103       84       336.00KB/s           4096B      0%           3
_Scan_Besteff..    101       20            0KB/s              0B      0%           0

The example above displays characteristics for the 4 QoS workloads with the highest IOPS and it refreshes the display 100 times before terminating.