From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lennier.cc.vt.edu (lennier.cc.vt.edu [198.82.162.213]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by huchra.bufferbloat.net (Postfix) with ESMTPS id 0A25121F28F for ; Sat, 19 Jul 2014 09:42:44 -0700 (PDT) Received: from mr2.cc.vt.edu (mr2.cc.vt.edu [198.82.163.74]) by lennier.cc.vt.edu (8.13.8/8.13.8) with ESMTP id s6JGfYxJ000702; Sat, 19 Jul 2014 12:41:34 -0400 Received: from auth1.smtp.vt.edu (auth1.smtp.vt.edu [198.82.161.152] (may be forged)) by mr2.cc.vt.edu (8.14.4/8.14.4) with ESMTP id s6JGfTPF014604; Sat, 19 Jul 2014 12:41:34 -0400 Received: from turing-police.cc.vt.edu ([IPv6:2601:8:1f80:663:adfe:85c3:e4f3:a14e]) (authenticated bits=0) by auth1.smtp.vt.edu (8.14.4/8.14.4) with ESMTP id s6JGfSD0028203 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Sat, 19 Jul 2014 12:41:28 -0400 X-Mailer: exmh version 2.8.0 04/21/2012 with nmh-1.6+dev To: Dave Taht In-Reply-To: Your message of "Fri, 18 Jul 2014 17:23:24 -0700." From: Valdis.Kletnieks@vt.edu References: Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1405788087_2017P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Sat, 19 Jul 2014 12:41:27 -0400 Message-ID: <55810.1405788087@turing-police.cc.vt.edu> X-Spam-Status: No, score=-0.0 required=5.0 tests=RP_MATCHES_RCVD autolearn=disabled version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mr2.cc.vt.edu Cc: "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cerowrt-devel] Fastpass: A Centralized "Zero-Queue" Datacenter Network X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 Jul 2014 16:42:45 -0000 --==_Exmh_1405788087_2017P Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable On Fri, 18 Jul 2014 17:23:24 -0700, Dave Taht said: > In particular, I'd *really love* to rip most of the network stack out > of the kernel and into userspace. And I really like the idea of > writable hardware that can talk to virtual memory from userspace (the > zynq can) To misquote Lost Boys, =22One thing about living in a microkernel I never= could stomach, all the damn context switches.=22 Or were you thinking going entirely the opposite direction and offloading= to ever-smarter network cards, sort of a combo of segment offload and zero-c= opy, on steroids no less? --==_Exmh_1405788087_2017P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Exmh version 2.5 07/13/2001 iQIVAwUBU8qftwdmEQWDXROgAQL+0Q//UFRtj5+Wp7Ofbwem8oihL3x5uHHzTENl NjDFE58qI1auMRcdEUrvQt0sO6AcaqZHzFWUGSk4+AWYOesDxXQFv7XFA8I3oKFb 8I0V7u6kaAFazsDTuhHkBoA0wMXNHs5sKrygtg6i5Xv/8sIur8dkklEFlUYTg5Ms dCoMMNa+IOir1GTCmHFgvlUYrJmhQ3hZo06xoRbYY+PQ/OftHwT0zwVNFbbL082z Zabf6NLEwWCRmoJKDDO4oMKrIS0hG5537pLAfEQIrZKW9/aDvDlohq9pJjqsMpYf zdMt8T0+QDkAZhOdCS63WSmKaFulF1RB0JLtVFJLw0Y5+/gDyLJLrs5ZoZji84Kk 9pn9PmYxa620BiaFwmrj8FXu9oRprmIG8a9Yf5ijAKkMpCE4ktXWdWC4kpuZlQXC BTZoIeUWfsMJllVEnRWjyX3yPlsdBWwUoXwGwtiNeE+6Z4RMW117a/oerZhZIsHR 1axpH0FespAQYe5GFQvl2uR5q8CwprnemmUGP5r+wdTnMyormewhBNrky01W0Ynu SKWaqsvifzYc4YQB5+PyIPScXNtmJKX8RRgEVqLn2cWjA+ilU56J2OemAQEIXtua e5VUtKBs8L9hC0KrprFg5dlcy1/C4DyBZj4PM+Dz7YYl0Jf63zyRzTBpAzkxIn6v J11GCd5AQs8= =nsqr -----END PGP SIGNATURE----- --==_Exmh_1405788087_2017P--