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Re: ndt data problem ?


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  • From: Rich Carlson <>
  • To: galuschka <>
  • Cc:
  • Subject: Re: ndt data problem ?
  • Date: Fri, 03 Dec 2010 08:39:22 -0500

Galuschka;

The 16 KB value comes from the MaxRwinRcv Web100 kernel variable. That is, the maximum value that the receiver (your PC) indicated it could handle. Either your default is not 8KB, or the Linux stack on the server is modifying the receive value.

What tool did you use to verify that you have an 8KB window?

Rich

On 12/1/2010 9:38 PM, galuschka wrote:
hi all ,
here is my ndt test results :

The theoretical network limit is 812.95 Mbps
The NDT server has a 127.0 KByte buffer which limits the throughput to 1237.62
Mbps
Your PC/Workstation has a 16.0 KByte buffer which limits the throughput to
82.05 Mbps
The network based flow control limits the throughput to 126.23 Mbps



i want to know , where did ndt get the information "16.0 KByte" ?
"Your PC/Workstation has a 16.0 KByte buffer"

i am using windows , but as I know , my TCP window size: 8.00 KByte (default)
, but why ndt get "16.0 KByte" ?



  • ndt data problem ?, galuschka, 12/01/2010
    • Re: ndt data problem ?, Rich Carlson, 12/03/2010

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