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Date:      Tue, 18 Jan 2000 18:59:25 +0100 (CET)
From:      Luigi Rizzo <luigi@info.iet.unipi.it>
To:        Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Cc:        net@FreeBSD.ORG
Subject:   Re: Feature: net.inet.tcp.local_slowstart ?
Message-ID:  <200001181759.SAA60954@info.iet.unipi.it>
In-Reply-To: <200001181749.MAA25359@khavrinen.lcs.mit.edu> from Garrett Wollman at "Jan 18, 2000 12:49:33 pm"

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> > may i add a new sysctl variable,
> 
> > 	net.inet.tcp.local_slowstart
> 
> In what way is this different from
> `net.inet.tcp.local_slowstart_flightsize'?

Ok, i did not notice the one you mention.

Speaking of this one i notice that it is implemented
in a somewhat strange way.

ss_fltsz_local is set to TCP_MAXWIN (65535) and the assignment
in tcp_input.c is then something like

	p->snd_cwnd = mss * ss_fltsz_local

dimensionally, this looks to me like bytes^2 ...

	cheers
	luigi

-----------------------------------+-------------------------------------
  Luigi RIZZO, luigi@iet.unipi.it  . Dip. di Ing. dell'Informazione
  http://www.iet.unipi.it/~luigi/  . Universita` di Pisa
  TEL/FAX: +39-050-568.533/522     . via Diotisalvi 2, 56126 PISA (Italy)
  Mobile   +39-347-0373137
-----------------------------------+-------------------------------------


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