From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.17.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 09A0D3B2A4 for ; Sat, 18 Nov 2017 12:56:18 -0500 (EST) Received: from [192.168.10.50] ([93.233.79.61]) by mail.gmx.com (mrgmx103 [212.227.17.168]) with ESMTPSA (Nemesis) id 0Lqyi7-1elreP2Nsp-00eeZt; Sat, 18 Nov 2017 18:55:34 +0100 To: Dave Taht Cc: Bob Briscoe , ken@cs.cornell.edu, bloat@lists.bufferbloat.net References: <4d54f24f-ce83-34a0-41f3-9f728420d548@gmx.net> <87shdr0vt6.fsf@nemesis.taht.net> <79f4d92c-74f4-8cd0-9d38-e51a668cb9b6@gmx.net> <796aa11e-9e35-cf34-e456-6ae98d1875d6@bobbriscoe.net> <87fu9f72za.fsf@nemesis.taht.net> From: Matthias Tafelmeier Message-ID: Date: Sat, 18 Nov 2017 18:55:32 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <87fu9f72za.fsf@nemesis.taht.net> Content-Type: multipart/signed; micalg=pgp-sha384; protocol="application/pgp-signature"; boundary="XvnhNHuwq5XNR0Dh9gHVDECftIEsohnLo" X-Provags-ID: V03:K0:I67/W/NqEUWuF7Zv8SE0iL1TBpaQ0DJfJim1VDeWv12978kvwJA uaS/X10QqHLlqEn6Z/nO0zMCDmN1LQ+mLEw6eVTB2xNWXz7vagsS5cpZ2s5wSzJbUQNx5B1 vfFVfHUAXY6rOox/P5ynqmwhrQ1WNDHUiOVjfTRFk59jlVdAIkdHR1kLeiX2MpNS5+og8Fw 9PE4JP5wTuixa9HTf6QIg== X-UI-Out-Filterresults: notjunk:1;V01:K0:rYHxp1LsC+0=:k2z1SohQKRCUh67Xf81M6B /dsfZFRFWpfAHhGY29XxaAMVQuw913Wv9j5FD/2KHFHGTjbmjae+J2j6xsUUSjbrUP4Wm+qIU EVJMM3z9qZtzGqghDBVm+CFFZDsmrzdBoQ2ZV8MWAY9dU4+zD4ZpQWabrEqCnjufOHphQhsWu L7WW7W6BSPs9LM53cAqZe28ZkodpKjjRY5Fi42mN6TaXYLDdRw3ljWyZOFOuGkvxIicxYoG0p LsO0MpZBT7Rb3kwJUga3rZ20UaObSuVojC5GWk3IOEald1ql926xmo1VQH6rDI2BCtQ4ZnD2l Efw9bZBM9aa+Ghog8k1Uo4x4D/wpM0rdCTrBV1VOEsO3cHwvxhumnYiJfTu17raQ10SnfD2Fd RDB9M3cqwD1m4LK65EPT9r6C3CFSwFnL+lGaJdT40hyI1lWiwK0E3J58vziPoUnk6VI0RFl47 XbX0Cgln2vktOdY50jrxe4amnhMoY7APmjNoG3LRYEEvCyzEbdw4gI3ETIEaD3MqRhn1Qfuaj ts7gqJYCXgAs70XmpBkyT0S0tSaS2vTUhhFMKi5gpPSGnECmd3nmOM23h88FF7EzydMehmfI6 b6FDYzDbWEE5E1E46ljv5fYt24L7U8/qlpH5x0iWVIqF/XAZwW3hB5V4ZZF8MvpZ7tlqJLKPn 3ekWG34Zwt+uUE9Qvyz1AKKqCCLkejpSpX6ykTj5MhtN0o5MA0WFR/Str12PQyS70YsLnLHfe jk2HgxJR6i2mPCuMlQenB3p3foy9epWIo5nx6WWTrhTk38HSIYlGJXb8VN6B+bTtvEV8nvoTe pMNSA0sxtlsjKHJVwGQk9O3vdr2Cg== Subject: Re: [Bloat] DETNET X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 18 Nov 2017 17:56:19 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --XvnhNHuwq5XNR0Dh9gHVDECftIEsohnLo Content-Type: multipart/mixed; boundary="OI2a435BNnQT7c21DOipwDghA2RFJo3f1"; protected-headers="v1" From: Matthias Tafelmeier To: Dave Taht Cc: Bob Briscoe , ken@cs.cornell.edu, bloat@lists.bufferbloat.net Message-ID: Subject: Re: [Bloat] DETNET References: <4d54f24f-ce83-34a0-41f3-9f728420d548@gmx.net> <87shdr0vt6.fsf@nemesis.taht.net> <79f4d92c-74f4-8cd0-9d38-e51a668cb9b6@gmx.net> <796aa11e-9e35-cf34-e456-6ae98d1875d6@bobbriscoe.net> <87fu9f72za.fsf@nemesis.taht.net> In-Reply-To: <87fu9f72za.fsf@nemesis.taht.net> --OI2a435BNnQT7c21DOipwDghA2RFJo3f1 Content-Type: multipart/mixed; boundary="------------78956EEE14EFAFAC75F3FB15" Content-Language: de-DE This is a multi-part message in MIME format. --------------78956EEE14EFAFAC75F3FB15 Content-Type: multipart/alternative; boundary="------------2F96C06114A4130218931F8A" --------------2F96C06114A4130218931F8A Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 11/15/2017 08:31 PM, Dave Taht wrote: >> Well, if it's already for specific HW, then I'd prefer to see RDMA in = place >> right away with getting rid of IRQs and other TCP/IP specific rust alo= ng the >> way, at least for DC realms :) Although, this HULL might has a spin fo= r it from >> economics perspective.=20 > It would be good for more to read the proceeds from the recent netdev > conference: > > https://lwn.net/Articles/738912/ > Especially ... "TCP Issues (Eric Dumazet) At 100gbit speeds with large round trip times we hit very serious scalability issues in the TCP stack. Particularly, retransmit queues of senders perform quite poorly. It has always been a simple linked list." goes in line with the aforementioned. --=20 Besten Gru=C3=9F Matthias Tafelmeier --------------2F96C06114A4130218931F8A Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
On 11/15/2017 08:31 PM, Dave Taht wrote:
Well, if it's already for specific HW, then I'd pr=
efer to see RDMA in place
right away with getting rid of IRQs and other TCP/IP specific rust along =
the
way, at least for DC realms :) Although, this HULL might has a spin for it from
economics perspective.=20

It would be good for more to read the proceeds from =
the recent netdev
conference:

https://lwn.net/Articles/738912/

Especially ...

"TCP Issues (Eric Dumazet)

At 100gbit speeds with large round trip times we hit very serious scalability issues in the TCP stack.

Particularly, retransmit queues of senders perform quite poorly. It has always been a simple linked list."

goes in line with the aforementioned.


--=20
Besten Gru=C3=9F

Matthias Tafelmeier
--------------2F96C06114A4130218931F8A-- --------------78956EEE14EFAFAC75F3FB15 Content-Type: application/pgp-keys; name="0x8ADF343B.asc" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="0x8ADF343B.asc" -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v2 mQENBFJ0FzIBCADZ/hkwcprVGydMOqeqM+2k6v5e5kb4YDMKU7nMbCVmH4sn01T7 Yh9kDwG5LOMLD06BB2txjLBvTY+c0mpK+hE4pWr+i3qhU5CbVvx7jppJqCD6ZT/T A3I7NxsdixRvLIF4UXgKQOMKPIx+aw/sp86NqzCLAMse7F0vXUjAP5YANtJid2rf r/B37BGKhqDGhi4Appz4UZOzpRov/v8JD4XScuvJnl09/oi5cDj3Mn2uqOc/G6hA t7HXsbHh4dKxd3AftqPPzEkJAmm+9Z4ASG9hy8IXms8Czimr+BGL0CnfsJlX6DCU m6mVDqT1GJyzmP4zkWcPi+2fOI4KtpV+C7+bABEBAAG0Ok1hdHRoaWFzIFRhZmVs bWVpZXIgKHByaXZhdCkgPG1hdHRoaWFzLnRhZmVsbWVpZXJAZ214Lm5ldD6JAUEE EwECACsCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAhkBBQJaAMzNBQkLTxyN AAoJEOAWT1uK3zQ7u+4IAL+W82wbz1FwGfNHhOgOheCh/wlTLssgQ7XVGRduJ/m3 k22aodOKSV5aH3AUy9c9zkgkRHUU5XCG9FRujVeVYhvLP1JTG97oEjk8YGBAOqN7 D4hUHh0c3ZBpTqeE9cndXr504GMauh5mY74qdNl9nL+Gcv7CekENML1nLWBnoDWV NTpvZktPZpHozQHPBV6lk09ICxOocb7VHl+lyorStqiUcLciHTdOByC35ekJebv9 dDZ9oloI8tvLytyle1kuVQLJj0LrpkUjcjLSYoa7ZFVKCNK6FM1pWd1XRHmWqhAn i4+4l92+UHU2TASBFIUVO3kPEDOXn7kK4q6tQ2pRexuJARwEEwECAAYFAlP4qFwA CgkQc1YJs62PXiMJwggAgwa8bM1DVdB5wdWVbsEvjDWgoD4CZOH+3/nCAKFv+eKf d3GrJUtOh3T/QVpmbVgNwnyqqNLGlyIOHltVkrn9WqSC33kuXsIStR6KM+LXnA99 FjyAiTcVbzbfl/XNlIQrgV9+niSSUFCUge5242itPjBBCtlYHUkQ5Y9hsNwV9Hb7 dpVxUf01CJcNKlWscC7lTt2FqjJrIOw2NHxgHWxRlDqo9dFg4uwI+O90orKAyJ6N Sowu2Ca6DXB3jHgoG7WbAh1nEVus/JkyVsnTIMCsfOpwhJNd1fvy6JMVAe7+/p6/ JGZcMjUTadmsHeJHwqOJSVOoX3Y8CZkV8/PHIqmYvokBPgQTAQIAKAUCU/hT+gIb AwUJAeEzgAYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQ4BZPW4rfNDvHZAf7 BpqfTpLdR25q72DZ4T6SrkcZCOJ8jJQhQ1K9cAc0snpK+jcWg9iUgCpV8QJiXpGL dAkux/YCu7SRstOSbMv4G4Qb/g8y2bowFI/mAzK1o6s6CYt3URNBe7zRLK6sJbK0 f5fDpWoRufW9/Ppj1/S7dki5JpkUlyGa/y2O+X4C/P0Rh3HfL5HicRHamc7PVElh z/8nVA+KUkcA9ksVJqe50LahTbDyqOmd8cjSdUKlH2dsP/cAmZfU3IAa26UBKWVn rxnQ61VV5QLpcYvW3jTfzBy7xv1s7YSj2rFpIC5WKgPC/p+2gqVMSGI1hRlrNaSA qH9XgWNPCa5NlOxuN4mSN4kBQQQTAQIAKwIbAwYLCQgHAwIGFQgCCQoLBBYCAwEC HgECF4AFCQSrhqYFAlRXtDwCGQEACgkQ4BZPW4rfNDvqmQf/Wa2LXaOvzftegDI+ LAiFOB/Dq5yhFp6urk5+yC+YzCFin8HfP+LVXR8Xkei6fMmFMjfRU0MrNLBxFd3I UrIgRrtmJGaHB+vkIqNGgU8LcpHBdd6nprtIF53IhtOINwkmCgLzWi3sGYJ4yQyj 9OSNnh7j7ENFeZd8LgN/FgB5GjPisN3zJD19z065jlfeXvHIZOL90PaTqih90x6n oTr4dbKhk1t9zZYhY5W812gCMVn2g4wLLO+iijKOe8uNrOw22xDGckoL5UFRE8Vj Twup3eYyzb/2TVpAmM5GhnI+PodZ6GGcQRVKGMYwYyFVLDEcDRxAUpwfXfUzHwvD op2fQ7Q/TWF0dGhpYXMgVGFmZWxtZWllciAoSGFwbG9ycmhpbmkpIDxtYXR0aGlh cy50YWZlbG1laWVyQGdteC5uZXQ+iQEfBDABAgAJBQJWPZtPAh0AAAoJEOAWT1uK 3zQ7FrIH/3OFr/bZ2UQeJrn9n67G9o9neJv4ES9Lcq6xnCIc+ZRHqrBTwsYkfYC5 MEMTF7TMFNUJTr2Np3OG7iKcHVePpeMpHicXppJ4hUsIQ0kwXlynRAScrAqoQHBD IKzu5qHDME0UKIWr9iTASFHJgZGyH6OoPh7LIifV8cGdVPQ/5FF1kqM4YMZ3IygO C3CaYtEaOz0B1L00zJan8rbEnpsI1msZ3hjacGB2SD5kFAUMDbpoXVOOE07GSLF0 KKhMv02WdrKO8iedStubO9BON9Vf7IIq21RpDEhhjAzt4Ui2q0UEodTvnBX4ifFM UEU/+NdC3deuRwdxOq1ozSQlUTzVFASJATQEEwECAB4CGwMCHgECF4ACCwkCFQoC FgMFAlRXs+UFCQSrhqYACgkQ4BZPW4rfNDs/HQf+K5swcPreRRBXQbTBCgTQAoAI JtvG+TLlPPnpYMqkQoKIhw/USN2Je4Gqm3DhRcCteA5wbmhlHj9DbapbCOwE7vfK 3YC/hpntvnmgCl6atT2QbE4Ak7xeT2ljLiRYD1re7oE8fAUqkI2S+vePiK1+b8Cc OKPmuAJYmgAMmNVMKcknryNoFc7xseNEy58T+AoyCKcxV9ZJdyd+6Ye48LkRlmyf lfRnCvgfS74TEq7Gr5uCJPgqcjrl8SS3G6jgUrzPcV2mFROt9EH3d80T+GOIy4pB SeYGdfkeqUbflj0CeRIyazzAZurllCQWjpaeh009Y/wuzLm91zrVWwADP/5oRIkB HAQTAQIABgUCU/ioXAAKCRBzVgmzrY9eI23xB/461lM4c/08tEwmd0oC1jdwyidO ZRCj/vOqZ+Af6oB3FdpWseuKWdJ7zb8NR+BcEUQRqbaF/677cCrKIEnRoq7IzNsw KiqK9K5cFHLtm9TNZ0Mf5QP/PG47Jrex5l59LMMz+LW1Rv/uXJjTQDeQYsrYDAPK mJx2c0OyzZnr+CRrHJKUH0P+oVBvSQEnDTbCT2W9wuLrDIHF6H3YQLAuCS2sslq5 teAinTjTGnPmkP7hKcK3CC0BdiUgFFybIZOGthFm+bTG+V3qGUiam95dqDmQ2VTX QxCetGDTjUrvKdODh5qLFUM+StWLNEP+QtMcymZfrRIHayKS3GyjKBOPoCZpiQE0 BBMBAgAeAhsDBQkB4TOAAh4BAheABQJSdB8LAgsJAhUKAhYDAAoJEOAWT1uK3zQ7 5nMH/iscBMT7fEnIBeYZlFaxiJmFobRVWFP/A2IfzvKVIdY9vDqjN5M5chrRfsk9 HI0EPbiF3kmVwmRdl8J5fgN7O8QFbhW4ojda8UXBAsgF50kurqk2NrdgM+xLy2TI jVZdwQYK+R11SpO9xaf+nqLKV8r9VkQ5mzb+BEzDiaX7z9IBrm28v0BfelDZVRzW cOrskVnwX1PySt3xvCwwo3cwY39yno7H4AlgTXhAvhwI6DQMxZXm4MZcugSfB5b4 2uyslOOxMkgvLW1CmpJxzbWXYT+40vW0DbQAUC1VIr7hiPrunrRAWfbV/RWZl6lr 6gMJJXkLGN70MUX40FF0IhZw5Ja5AQ0EUnQXMgEIAPICr+5yNyuVcmsv5xpmRKnz KoTjJ7xt0EPiru895LEUPN25tJyi8PZmLciNJnEoQ231jjAloQvx1pb3cr35zzGX PTPJ5fEECZDxMWMjVvCMb4XK0YjqCF9i/uKic5zqjwRNAPEGTO/ZgS+e21lUJSmu KR6m5WQcKgBH+tqS3rodgjunnIN4UiNMxbq/VVGICWPjdgoTkqWE3r8QthKLg4Lj zILEH3HbG39l+vTwEKaP4q5xShFZjRUrZC2anBP+gQx/FbBff3ufpCL9LF5dkywZ P3NHVyaa/D8T66CTj7Rynd4NZy/qdqGMjMjEuf0RkgXF7Uar4GXmuOfrIcf/X6EA EQEAAYkBJQQYAQIADwIbDAUCVj2bwwUJB4vrkQAKCRDgFk9bit80O/0ZCACoWtov fl7vH3YNW0K3xWil9wj43X2OxwKiGBdfbI48bW+b6LJQwNwFePFQ/RQCBgg1eerU Oys0ymcmp0VeMdwpw27qWcMcbsDn3Pucqp1C2IUuXesbUcRo+QDqhl96KxAAWY5O JO16dfRrIxyX6Pb0uImqpDetT4Kbr1doTF8cIfRH2rszHKU9BEWag/us9V8H5S8h F7Ws2wH2JlWbQpP8E7/Z5kVM9psdqX9rwbrUAqpyNhtILoC0+zXkdnOxz1WZaBpr ckEYQS4/CQOliYJyd5nXYcwVXCNpdy1Vt53ArN9j/EIvfFxOPCPoBQj1b9nkHqNn qnlCR0LVNOnSE3Eb =3Droc5 -----END PGP PUBLIC KEY BLOCK----- --------------78956EEE14EFAFAC75F3FB15-- --OI2a435BNnQT7c21DOipwDghA2RFJo3f1-- --XvnhNHuwq5XNR0Dh9gHVDECftIEsohnLo Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCQAGBQJaEHQUAAoJEOAWT1uK3zQ79oQH+wQFvXe+dbRX6sPOyJrYWlzw SMrrIW+uiLN0I/Oe0qyEB6gxn2YH66OZTtL0yCusU5JjlS4ka6p2vu7AXgoyiMrW 8xiiEnmme5xMI4zN3axtgTy2YZuElzn9EOBYH4g10rpuxsr5QXcVpEsEoiP1VcPx liql9W3dOsHT6GszoBSVxYEZDzLdVdMNOaCSxXVsRYcz9F8HYDufyLhCic17FP54 BIkKBy6oijjU3LKNxinsU3yLgq5PnSiKiXgD/k+IbXjyg15u1ONpsdlV4FYmZGG9 Hx08zDDFTYrZ8z6tDBebqBG3oG9j8r5xKG4JK4pn3sOKR5Kp+dQAe+vt17UoDzY= =b419 -----END PGP SIGNATURE----- --XvnhNHuwq5XNR0Dh9gHVDECftIEsohnLo--