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Date:      Thu, 18 Feb 2010 10:28:15 -0600
From:      Adam Vande More <amvandemore@gmail.com>
To:        Harald Schmalzbauer <h.schmalzbauer@omnilan.de>
Cc:        Patrick Mahan <mahan@mahan.org>, freebsd-stable@freebsd.org, Stephen Hurd <shurd@sasktel.net>
Subject:   Re: RELENG_8 ignoring TCP window size? [Was: Re: Help for TCP  understanding wanted, ACK-MSS-Window [Was: Re: best practice to watch TCP  parms of established sockets]]
Message-ID:  <6201873e1002180828y406dca32k30ef64c05d1f7640@mail.gmail.com>
In-Reply-To: <4B7D69A5.4010506@omnilan.de>
References:  <4B7C1365.9070806@omnilan.de> <70CD649D-7659-4CE2-A16C-49B8C891CB5B@mac.com> <4B7C4066.5040006@omnilan.de> <4B7D3938.1000309@omnilan.de> <4B7D5AC4.9020509@mahan.org> <4B7D61DE.2020906@omnilan.de> <4B7D6635.20605@sasktel.net> <4B7D69A5.4010506@omnilan.de>

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On Thu, Feb 18, 2010 at 10:24 AM, Harald Schmalzbauer <
h.schmalzbauer@omnilan.de> wrote:

> The problem is not with the windows box, these transfer rates are sensible.
> The problem is with two RELENG_8 machines.
>
> I'm doing this whole thing because I observed slowdowns under 20MB/s and I
> try to reproduce and investigate this. But first I have to get the idea
> right... If I don't understamd things going on when transfers make sense, I
> won't be able to determine what happens when transfers are slowed down...
>

Have you considered the possibility it's not a tcp issue at all, maybe a nic
driver?

-- 
Adam Vande More



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