Identifying Network Performance Issues (CLI)

Use the following procedure to identify and remedy network hardware bottlenecks on the appliance. Based on the results of the analytic dataset, suggested corrective actions are provided to increase network throughput.

1. Create a worksheet as described in Creating a Worksheet (CLI), select that worksheet, and then enter dataset.

   hostname:analytics worksheets> select worksheet-000
   hostname:analytics worksheet-000> dataset

2. Enter set name=nic.kilobytes[device], and then enter commit to add Network device bytes broken down by device to your worksheet.

   hostname:analytics worksheet-000 dataset (uncommitted)> set name=nic.kilobytes[device]
                              name = nic.kilobytes[device]
   hostname:analytics worksheet-000 dataset (uncommitted)> commit

3. Enter done, and then enter done again to exit the context.

   hostname:analytics worksheet-000> done
   hostname:analytics worksheets> done

4. Wait at least 10 minutes, and then go to analytics datasets.

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   Note -  Ten minutes is a general guideline. This amount of time may be adjusted if you have shorter-duration workloads that demand maximum available network bandwidth.

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   hostname:> analytics datasets

5. Enter show to view a list of available datasets.

   hostname:analytics datasets> show
   Datasets:
   
   DATASET     STATE    INCORE  ONDISK  NAME
   dataset-000 active    1.27M   15.5M  arc.accesses[hit/miss]
   dataset-001 active     517K   9.21M  arc.accesses[hit/miss=metadata hits][L2ARC eligibility]
   ...
   dataset-032 active     290K   7.80M  nic.kilobytes[device]
   hostname:analytics datasets>

6. Enter select and the dataset with the name nic.kilobytes[device].

   In this example, dataset name nic.kilobytes[device] corresponds to dataset-032.

   hostname:analytics datasets> select dataset-032

7. Enter read 600 to read the last 600 seconds, or 10 minutes, of the dataset. When you are finished examining the data, enter done.

   hostname:analytics dataset-032> read 600
   ...
   hostname:analytics dataset-032> done

   If any network device reaches 95% of its maximum throughput for more than 10 minutes, you might need to install additional network devices.