Re: TCP socket buffer autotuning

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On Fri, 20 Oct 2006, H.K. Jerry Chu wrote:
> Note that window scaler = 9 so you'll have to multiple max win adv,
> e.g., by 512. Also the data is collected on the xmit side below
> netem so I'm not sure how useful it is.
...
> Ostermann's tcptrace -- version 6.6.7 -- Thu Nov  4, 2004
>     req 1323 ws/ts:          N/Y           req 1323 ws/ts:          N/Y

It's difficult for me to understand the result (because the window 
below is larger than 64K), but at least this seems strange -- as if 
the Window Scaling option was not enabled at all.

In tcptraces I have (with 6.6.1 though), these are Y/Y and tcptrace 
shows the window scaling factor.  You say it's 9, but that isn't shown 
anywhere in the trace below.

Maybe you cut'n'pasted a wrong trace?

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
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