From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: Re: [PATCH rdma-next 0/4] Add packet pacing support for IB verbs Date: Wed, 9 Nov 2016 08:40:09 +0200 Message-ID: <20161109064009.GE27883@leon.nu> References: <1477909297-14491-1-git-send-email-leon@kernel.org> <1828884A29C6694DAF28B7E6B8A82373AB0A7B31@ORSMSX109.amr.corp.intel.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="0QFb0wBpEddLcDHQ" Return-path: Content-Disposition: inline In-Reply-To: <1828884A29C6694DAF28B7E6B8A82373AB0A7B31-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "Hefty, Sean" Cc: "dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.org --0QFb0wBpEddLcDHQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Nov 08, 2016 at 05:49:26PM +0000, Hefty, Sean wrote: > > When sending from a 10G host to a 1G host, it is easy to overrun the > > receiver, > > leading to packet loss and traffic backing off. Similar problems occur > > when > > a 10G host sends data to a sub-10G virtual circuit, or a 40G host > > sending > > to a 10G host. Packet pacing could control packet injection rate and > > reduces > > network congestion to maximize throughput & minimize network latency. > > Why isn't the path record data and existing mechanisms sufficient to handle this? > Packet pacing allows different combinations of traffic shaping: per-CPU, per-flow and their combinations with better and steady QoS requirements without involving subnet management. Thanks --0QFb0wBpEddLcDHQ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJYIsTJAAoJEORje4g2clin7BkP/3fgbrQx1CFr+fS6FPCzzYXl TN32jGnV2WLwKdShSF8BSO4y7vj/YlNIOH5sphmjl+NNoJmLfTVgMH4t34D34zS/ yad8WbSOSzpFuF5FIGq1mt8TTBmkrR+9sG3i4cWkmHEuqsEfkEjM+A7k1j0c5M2v V4g3UBZK8F4qfI87K/muncIkD0kMGHjtoKtOrgwFsVLgBX8e1yXKL79UPS4Kg8Ge g4sxkc0QH+hbHomtPiChW+LIwnookLYs3QNXHcvzjvNZhaE5r2iLPuJPMUIvieSZ KXyJcuvrFC3/D8Z6w60RFy/OZVlnucSiWFmkkMOtycjK2uKfWRrG7UNXbk6cBGrs 0i79mz0vQVnVUr5qhQGyYteo9/d8JehkdE30trxkF54JWqGpZx/nJQ3KTSVoYjxO w899BojWzyttF9LZCbZAIynjq7Ybig+VbvJYDSpXXAAQ5tVjIo3hQ9AefMn94BWT hdLEAa98IZgHyZi2yNI9gslMMjDFhp4WLsEpG6DZ5sRhMaZEdPQKL5bSZKNDsjGO xXCHpmu/O9BfCrD0QbcuC1Z4i7HF7OZC6Ytkt3kYyhkCCrsE/j2Np7kc6NO5IO53 WoTam3MEogLybIibAJE9RvjOu+N4lo6RDewfMJp+5NLjZOQoTr3mRMEeWhTasKd3 a/ENPd6l+U5+NRBLsp6L =H3Is -----END PGP SIGNATURE----- --0QFb0wBpEddLcDHQ-- -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html