netdev - Re: [PATCH] tcp: Increase the initial congestion window to 10.

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Message-ID: <alpine.DEB.2.00.1102042143310.28937@melkinpaasi.cs.helsinki.fi>
Date:	Fri, 4 Feb 2011 21:50:03 +0200 (EET)
From:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To:	Yuchung Cheng <ycheng@...gle.com>
cc:	David Miller <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>, therbert@...gle.com,
	"H.K. Jerry Chu" <hkjerry.chu@...il.com>,
	Nandita Dukkipati <nanditad@...gle.com>
Subject: Re: [PATCH] tcp: Increase the initial congestion window to 10.

On Thu, 3 Feb 2011, Yuchung Cheng wrote:

> On Thu, Feb 3, 2011 at 2:43 PM, Ilpo Järvinen <ilpo.jarvinen@...sinki.fi> wrote:
> > It would perhaps be useful to change receiver advertized window to include
> > some extra segs initially. It should be >= IW + peer's dupThresh-1 as
> That's a very good point.
> 
> Maybe IRW should be IW + ssthresh - 1 since Linux also performs
> limited-transmit during fast-recovery as described in RFC 3517. This
> way sender can keep sending new data during the recovery as long as
> cwnd allows.

You're of course right, I forgot the recovery altogether :-).

-- 
 i.