Date: Wed, 14 Aug 2013 23:29:09 +0000 From: "Eggert, Lars" <lars@netapp.com> To: Lawrence Stewart <lstewart@freebsd.org> Cc: Andre Oppermann <andre@FreeBSD.org>, "freebsd-net@freebsd.org" <net@freebsd.org> Subject: Re: TCP Initial Window 10 MFC (was: Re: svn commit: r252789 - stable/9/sys/netinet) Message-ID: <E758A846-D0D0-4B38-93E2-9BBC1008CD69@netapp.com> In-Reply-To: <918804B0-BED8-4E49-9D70-01DDA6F257B3@netapp.com> References: <201307051458.r65EwObo066269@svn.freebsd.org> <520AED2F.4050001@freebsd.org> <918804B0-BED8-4E49-9D70-01DDA6F257B3@netapp.com>
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[-- Attachment #1 --] Oh: The other interesting bit is that Chrome defaulted to telling the server to use IW32 if it had no cached value... I think Google are still heavily tweaking the mechanisms. Lars On Aug 14, 2013, at 16:46, "Eggert, Lars" <lars@netapp.com> wrote: > Hi, > > On Aug 14, 2013, at 10:36, Lawrence Stewart <lstewart@freebsd.org> wrote: >> I don't think this change should have been MFCed, at least not in its >> current form. > > FYI, Google's own data as presented in the HTTPBIS working group of the recent Berlin IETF shows that 10 is too high for ~25% of their web connections: see slide 2 of http://www.ietf.org/proceedings/87/slides/slides-87-httpbis-5.pdf > > (That slide shows a CDF of CWND values the server used at the end of a web transaction.) > > Lars [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iQCVAwUBUgwSxtZcnpRveo1xAQLO+wP+JVPzI+MwO7t1ICSbdK3jo77rVtQGvHXM bb9q8dwL5YCvSjYCMb/XaKKkwuGbwIgewg1ET0c6luJoETu0KAGZbyQbq7cF43cU 2JcKFd4afdue+htr8elm7tXic2ttmyCOIyASn3aWHidgO83HcmS7w48azdP3U3YF 9BGKzC/g+8g= =vPGM -----END PGP SIGNATURE-----
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