Re: Actual window sized used

["William E. Allcock" <allcock --at-- mcs.anl.gov>]

That is true for the default, but iperf can not override the maximum 
value set.

Bill

McConnell Andrew (CDI) wrote:
> Whatever window size you set on iperf's command line will override the
> OS setting. If you don't specify a window using -w then iperf will use
> the window size your OS specifies.
>
> --Andy
>
>
> -----Original Message-----
> From: owner-iperf-users --at-- dast.nlanr.net
> [mailto:owner-iperf-users --at-- dast.nlanr.net] On Behalf Of Chris McFarling
> Sent: Friday, September 09, 2005 11:28 AM
> To: iperf-users --at-- dast.nlanr.net
> Subject: Actual window sized used
>
> Do TCP window parameter settings in the OS affect the window size used
> by
> iperf? For example, if I make the following registry edits in Win2K:
>
>   GlobalMaxTcpWindowSize=17520
>   Tcp1323Opts=1
>   TcpWindowSize=17520
>
> and the start iperf with the following:
>
> iperf -s -w 65700
>
>
> will iperf use a 65700 byte window or will it use a 17520 window? It
> reports
> that is using a window size of 64K but I just want to verify that what
> it's
> reporting is actually true.
>
> Thanks

--
William E. Allcock
Argonne National Laboratory
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