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Date:      Sat, 29 Nov 2008 13:01:52 -0800 (PST)
From:      Venkat Venkatsubra <venkatvenkatsubra@yahoo.com>
To:        David Malone <dwmalone@maths.tcd.ie>
Cc:        Rui Paulo <rpaulo@fnop.net>, freebsd-net@freebsd.org, Kevin Oberman <oberman@es.net>
Subject:   Re: FreeBSD Window updates
Message-ID:  <865234.28813.qm@web58308.mail.re3.yahoo.com>
References:  <200811292046.aa42834@salmon.maths.tcd.ie>

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So the apps read buffer is possibly 32=A0times 2^8 =3D 8KB ?=0A(32 being th=
e increment in each of those window updates.)=0A=0A=0A=0A=0A_______________=
_________________=0AFrom: David Malone <dwmalone@maths.tcd.ie>=0ATo: Venkat=
 Venkatsubra <venkatvenkatsubra@yahoo.com>=0ACc: Rui Paulo <rpaulo@fnop.net=
>; freebsd-net@freebsd.org; Kevin Oberman <oberman@es.net>=0ASent: Saturday=
, November 29, 2008 2:46:53 PM=0ASubject: Re: FreeBSD Window updates=0A=0A>=
 Each of these 5 window updates are sent after the apps completed the read=
=0A> that it issued, what's the buffer size the apps is passing to the read=
?=0A> If it is small, could that be increased?=0A=0AI'm not actually sure -=
 the app is iperf. The window scaling factor=0Ais 8 here I think.=0A=0A> Bu=
t I agree with you that there is room for optimizing sending of these=0A> w=
indow updates.=0A=0AAny feeling for which would be the better fix?=0A=0A=A0=
=A0=A0 David.=0A=0A=0A=0A      



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