application commands
qos statistics workload latency show
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Display latency breakdown data per QoS workload
Availability: This command is available to cluster administrators at the admin privilege level.
Description
The qos statistics workload latency show command displays the average latencies for QoS workloads on Data ONTAP subsystems.
The command displays the following data:
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The QoS workload name (Workload)
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The QoS workload ID (ID)
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Total latency observed per I/O operation (Latency)
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Latency observed per I/O operation in the Network subsystem (Network)
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Latency observed per I/O operation across the internally connected nodes in a Cluster (Cluster)
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Latency observed per I/O operation in the Data management subsystem (Data)
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Latency observed per I/O operation in the Storage subsystem (Disk)
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Latency observed per I/O operation in the QoS subsystem (QoS)
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Latency observed per I/O operation for NVRAM transfer (NVRAM)
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Latency observed per I/O operation for Object Store(Cloud) operations
The results displayed per iteration are sorted by the total latency field. Each iteration starts with a row that displays the average latency, in microseconds (us) or milliseconds (ms) observed across all QoS workloads.
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 that the command refreshes the display with updated data before terminating. If you do not specify this parameter, the command continues to run until you interrupt it by pressing 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.
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[-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.
[-policy-group <text>]- QoS Policy Group Name-
Selects the QoS workloads that belong to the QoS policy group specified by this parameter value. If you do not specify this parameter, the command displays data for all QoS workloads.
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[-workload <text>]- QoS Workload Name -
Selects the QoS workload that match this parameter value. If you do not specify this parameter, the command displays data for all QoS workloads.
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[-workload-id <integer>]- QoS Workload ID } -
Selects the QoS workload that match the QoS workload ID specified by this parameter value.
[-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 workload latency show -iterations 100 -rows 3 Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud --------------- ------ -------- -------- -------- -------- -------- -------- ---------- ---------- -total- 110.35ms 110.02ms 0ms 327.00us 0ms 0ms 0ms 0ms vs1vol0 111 167.82ms 167.22ms 0ms 603.00us 0ms 0ms 0ms 0ms vol1 1234 117.76ms 117.56ms 0ms 191.00us 0ms 0ms 0ms 0ms vol2 999 44.24ms 44.05ms 0ms 190.00us 0ms 0ms 0ms 0ms -total- - 38.89ms 38.63ms 0ms 256.00us 0ms 0ms 0ms 0ms vol2 999 64.47ms 64.20ms 0ms 266.00us 0ms 0ms 0ms 0ms vol1 1234 27.28ms 27.03ms 0ms 253.00us 0ms 0ms 0ms 0ms vs1vol0 111 23.72ms 23.47ms 0ms 249.00us 0ms 0ms 0ms 0ms -total- - 409.81ms 409.65ms 0ms 169.00us 0ms 0ms 0ms 0ms vol1 1234 816.92ms 816.80ms 0ms 120.00us 0ms 0ms 0ms 0ms vol2 999 407.88ms 407.66ms 0ms 219.00us 0ms 0ms 0ms 0ms vs1vol0 111 3.68ms 3.49ms 0ms 193.00us 0ms 0ms 0ms 0ms
The example above displays latencies for the 3 QoS workloads with the highest latencies and it refreshes the display 100 times before terminating.
cluster1::> qos statistics workload latency show -iterations 100 -rows 2 -policy-group pg1 Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 4.80ms 287.00us 0ms 427.00us 4.08ms 0ms 0ms 0ms file-test1-wi.. 7872 9.60ms 265.00us 0ms 479.00us 8.85ms 0ms 0ms 0ms file-test1_a-.. 6437 8.22ms 262.00us 0ms 424.00us 7.53ms 0ms 0ms 0ms -total- - 4.20ms 296.00us 0ms 421.00us 3.48ms 0ms 0ms 0ms file-test1-wi.. 7872 8.70ms 211.00us 0ms 489.00us 8.00ms 0ms 0ms 0ms file-test1_a-.. 6437 6.70ms 297.00us 0ms 464.00us 5.94ms 0ms 0ms 0ms -total- - 5.90ms 303.00us 0ms 1.71ms 3.88ms 0ms 0ms 0ms file-test1-wi.. 7872 11.36ms 263.00us 0ms 2.06ms 9.04ms 0ms 0ms 0ms file-test1_a-.. 6437 9.48ms 250.00us 0ms 2.30ms 6.93ms 0ms 0ms 0ms
The example above displays latencies for the 2 QoS workloads belonging to QoS policy group pg1 with the highest IOPS and it refreshes the display 100 times before terminating.
cluster1::> qos statistics workload latency show -iterations 100 -workload-id 9492 Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 443.00us 273.00us 0ms 170.00us 0ms 0ms 0ms 0ms file-test1_b-.. 9492 440.00us 272.00us 0ms 168.00us 0ms 0ms 0ms 0ms -total- - 577.00us 313.00us 0ms 264.00us 0ms 0ms 0ms 0ms file-test1_b-.. 9492 607.00us 316.00us 0ms 291.00us 0ms 0ms 0ms 0ms -total- - 475.00us 291.00us 0ms 184.00us 0ms 0ms 0ms 0ms file-test1_b-.. 9492 476.00us 293.00us 0ms 183.00us 0ms 0ms 0ms 0ms -total- - 628.00us 284.00us 0ms 344.00us 0ms 0ms 0ms 0ms file-test1_b-.. 9492 591.00us 281.00us 0ms 310.00us 0ms 0ms 0ms 0ms
The example above displays the latencies for the QoS workload with QoS workload ID 9492 and it refreshes the display 100 times before terminating.