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ndt-dev - Re: [ndt-dev] Issue 3 in ndt: Slowest link detection in the path is not correct

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Re: [ndt-dev] Issue 3 in ndt: Slowest link detection in the path is not correct


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  • From: Rich Carlson <>
  • To:
  • Cc:
  • Subject: Re: [ndt-dev] Issue 3 in ndt: Slowest link detection in the path is not correct
  • Date: Sun, 28 Feb 2010 16:39:08 -0500

Sekhar;

The NDT readme should have a comment about this. You need to disable interrupt coalescing on the server's NIC to get good data for the bottleneck link test.

Rich

On 2/26/2010 8:24 PM,

wrote:
Status: Accepted
Owner: sekharnv73
Labels: Type-Defect Priority-High

New issue 3 by sekharnv73: Slowest link detection in the path is not
correct
http://code.google.com/p/ndt/issues/detail?id=3

What steps will reproduce the problem?

1. Connect server and client in a 1GBit Switch
2. Start both servers (fakewww and web100)
3. Open the browser and connect to the server.
4. Click the start button to start the test and wait till client complete
the test.
5. Slowest link displayed as (slowest link as "622 Mbps OC-12) insted of
1GBit also the inbound and outbound throughput is showed more than 900MB.

What is the expected output? What do you see instead?
Slowes Link should be 1GBit ethernet and throughput should be less then the
slowest link.


What version of the product are you using? On what operating system?
NDT server 3.6.0
Client : Linux (Ubuntu 9)

Please provide any additional information below.

In more details window also it is showing link type as OC-12 and GigE.



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