Date: Sun, 10 Feb 2013 14:36:08 +0400 From: Andrey Zonov <zont@FreeBSD.org> To: Kevin Oberman <kob6558@gmail.com> Cc: Alfred Perlstein <bright@mu.org>, Randall Stewart <rrs@lakerest.net>, John Baldwin <jhb@freebsd.org>, net@freebsd.org Subject: Re: [PATCH] Add a new TCP_IGNOREIDLE socket option Message-ID: <51177818.2090900@FreeBSD.org> In-Reply-To: <CAN6yY1uX__JDEk9dLdJr3pdE1u848jaF_jTn%2B_mrP05bXqm_Pw@mail.gmail.com> References: <201301221511.02496.jhb@freebsd.org> <50FF06AD.402@networx.ch> <061B4EA5-6A93-48A0-A269-C2C3A3C7E77C@lakerest.net> <201302060746.43736.jhb@freebsd.org> <511292C9.4040307@mu.org> <E6BF2B74-175F-49D9-B480-8941294D2E19@neville-neil.com> <51166019.9040104@mu.org> <CAN6yY1uX__JDEk9dLdJr3pdE1u848jaF_jTn%2B_mrP05bXqm_Pw@mail.gmail.com>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) ------enig2WTXXJCNJPLDAQHRIJTMU Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 2/10/13 9:05 AM, Kevin Oberman wrote: >=20 > This is a subject rather near to my heart, having fought battles with > congestion back in the dark days of Windows when it essentially > defaulted to TCPIGNOREIDLE. It was a huge pain, but it was the only > way Windows did TCP in the early days. It simply did not implement > slow-start. This was really evil, but in the days when lots of links > were 56K and T-1 was mostly used for network core links, the Internet, > small as it was back then, did not melt, though it glowed a > frightening shade of red fairly often. Today too many systems running > like this would melt thins very quickly. >=20 Google made many many TCP tweaks. Increased initial window, small RTO, enabled ignore after idle and others. They published that, other people just blindly applied these tunings and the Internet still works. --=20 Andrey Zonov ------enig2WTXXJCNJPLDAQHRIJTMU Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.18 (Darwin) Comment: GPGTools - http://gpgtools.org iQEcBAEBAgAGBQJRF3gbAAoJEBWLemxX/CvTVKwIAJrSIWopSdXkWE9OJ+2ibr1d 5uKzuhnu3koUvGAxBVF+AiVEHAPcrmC726WHdtT4iPC2Z8vlQP+166A2V5R+itUK enjOE4S5Bh81nGyMYQ2x90PC21yPEC0whYTfmAFFP2hySbQI+7um1KMFgHiiU8aY UpDA573fmuCay8Z2SfeAidasaqECQsAt8QVJNHldKFK10tVyLQBLbb/UrGLw5IPi RtG/4yc9NPmE9wUIbx2MYtWIaxBLyqIYxuufzuurVNR60w4ubRSie/oRvPjEyA6/ IaDZ7cPP0FAGGbS1rxUKbI/icUk6LKV7Gs5KCVGUkn0wFoqnMM0TqQ4mcFXiO8g= =c/rX -----END PGP SIGNATURE----- ------enig2WTXXJCNJPLDAQHRIJTMU--
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