Network bandwidth for Standard_D4s_v3 with a NTTTP test gives 228MB/s

Azure Contractor 2 31 Reputation points
2020-07-30T04:36:08.957+00:00

We executed a NTTTP test between two Standard_D4s_v3 on windows OS , the results shows : 228MB/s.

Tried with both the commands below :

ntttcp.exe -r -m 4,,IP -l 64k -a 2 -t 30
ntttcp.exe -s -m 4,
,IP -l 64k -a 2 -t 30

ntttcp -s -m 4,,IP -t 10
ntttcp -r -m 4,
,IP -t 10

Request to help me on this , as the Expected network bandwidth (Mbps) is 2000 .

Is there something more to be added to the above command , is this the correct way to test the Network Bandwidth available between two same c;lass of machines.?

Refer Image attached

14455-228mb.png

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Accepted answer
  1. Andreas Baumgarten 123.7K Reputation points MVP Volunteer Moderator
    2020-07-30T16:58:04.647+00:00

    Based on this website the expected network bandwith of a Standard_D4s_v3 is 2000 Mbps (2000 mega bits per second).

    Dsv3-series

    14590-d4s-v3.png

    Your screenshot shows the result of 228,667 MB/s (228,667 Mega Bytes per second).

    1 Byte = 8 Bit

    228,667 Mega Bytes per second (MB/sec) x 8 = 1829,336 mega bits per second (Mbps)

    1829 Mbps vs 2000 Mbps is close to the expected network bandwidth .... at least it's my opinion.

    Maybe this is helpful.

    Regards

    Andreas Baumgarten

    (Please don't forget to Accept as answer if the reply is helpful)

    1 person found this answer helpful.

2 additional answers

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  1. Didier3001 1,021 Reputation points Microsoft Employee
    2020-07-30T09:35:09.96+00:00

    Which type of disk and disk size did you use?


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