netdev - Re: about Linux adaptivly adjusting ssthresh

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Message-ID: <1e41a3230808271548w15164eadt1042f37bf2df7e6f@mail.gmail.com>
Date:	Wed, 27 Aug 2008 15:48:44 -0700
From:	"John Heffner" <johnwheffner@...il.com>
To:	wenji@...l.gov
Cc:	"David Miller" <davem@...emloft.net>, ilpo.jarvinen@...sinki.fi,
	netdev@...r.kernel.org
Subject: Re: about Linux adaptivly adjusting ssthresh

On Wed, Aug 27, 2008 at 7:38 AM, Wenji Wu <wenji@...l.gov> wrote:
>
> Hi, all,
>
> Could anybody help me out with Linux adaptively adjusting ssthresh? Thanks
> in advance.
>
> I understand that the latest Linux is able to adaptively adjust ssthresh to
> avoid retransmission. Could anybody tell me which algorithms have been
> implemented for the adaptive ssthresh adjust?


A little more detail would be helpful.  Are you referring to caching
ssthresh between connections, or something going on during a
connection?  Various congestion control modules use ssthresh
differently, so a comprehensive answer would be difficult.

  -John
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