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RE: 2.6.10 TCP troubles -- suggested patch

To: "'David S. Miller'" <davem@xxxxxxxxxxxxx>, "'Alexey Kuznetsov'" <kuznet@xxxxxxxxxxxxx>
Subject: RE: 2.6.10 TCP troubles -- suggested patch
From: "Leonid Grossman" <leonid.grossman@xxxxxxxxxxxx>
Date: Sat, 12 Feb 2005 11:44:45 -0800
Cc: <rick.jones2@xxxxxx>, <hubert.tonneau@xxxxxxxxxxxxxx>, <shemminger@xxxxxxxx>, <romieu@xxxxxxxxxxxxx>, <kuznet@xxxxxxxxxxxxx>, <netdev@xxxxxxxxxxx>
In-reply-to: <20050212112811.13a0b97d.davem@xxxxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
Thread-index: AcUROUun7s9Fsk1KTAO5B8ecDKm8hgAAX8gA
Typically, a TSO engine sets PSH in the last packet that it builds for the
TSO+PSH request.
Leonid

> -----Original Message-----
> From: netdev-bounce@xxxxxxxxxxx 
> [mailto:netdev-bounce@xxxxxxxxxxx] On Behalf Of David S. Miller
> Sent: Saturday, February 12, 2005 11:28 AM
> To: Alexey Kuznetsov
> Cc: rick.jones2@xxxxxx; hubert.tonneau@xxxxxxxxxxxxxx; 
> shemminger@xxxxxxxx; romieu@xxxxxxxxxxxxx; 
> kuznet@xxxxxxxxxxxxx; netdev@xxxxxxxxxxx
> Subject: Re: 2.6.10 TCP troubles -- suggested patch
> 
> On Sat, 12 Feb 2005 17:31:05 +0300
> Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx> wrote:
> 
> > In any case, receiver cannot know sender cwnd, so that 
> "fill" or "not fill"
> > is is not a question.
> >
> > What is broken in that implementation is that it does not 
> feel slow start.
> > ACK avoidance while slow start is certain disaster. 
> Currrent theory is 
> > that MacOS X thinks that we do not do slow start.
> 
> It is correct.  Although, I am still believing that setting 
> PSH is the avenue of investigation.
> 
> 


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