From oracle-l-bounce@freelists.org Fri Sep 9 17:38:38 2005 Return-Path: Received: from air891.startdedicated.com (root@localhost) by orafaq.com (8.12.10/8.12.10) with ESMTP id j89McbE5016419 for ; Fri, 9 Sep 2005 17:38:37 -0500 X-ClientAddr: 206.53.239.180 Received: from turing.freelists.org (freelists-180.iquest.net [206.53.239.180]) by air891.startdedicated.com (8.12.10/8.12.10) with ESMTP id j89McZIP016410 for ; Fri, 9 Sep 2005 17:38:35 -0500 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 2F9211E9B3E; Fri, 9 Sep 2005 17:38:28 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 06759-07; Fri, 9 Sep 2005 17:38:28 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id ACBBC1E996D; Fri, 9 Sep 2005 17:38:27 -0500 (EST) X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by Ecartis Subject: RE: Infiniband for RAC 10g on Linux Date: Fri, 9 Sep 2005 15:36:33 -0700 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Infiniband for RAC 10g on Linux Thread-Index: AcW1e7iKi8RD7Jb0Qye9xXWburQzgwAEtu1A From: "Kevin Closson" To: X-archive-position: 25253 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: kevinc@polyserve.com Precedence: normal Reply-To: kevinc@polyserve.com X-list: oracle-l X-Virus-Scanned: by amavisd-new-20030616-p9 (Debian) at avenirtech.net X-mailscan-MailScanner-Information: Please contact the ISP for more information X-mailscan-MailScanner: Found to be clean X-MailScanner-From: oracle-l-bounce@freelists.org X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on air891.startdedicated.com X-Spam-Status: No, hits=-4.8 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=2.63 interconnect latency is not the problem. Once a node goes processor saturated, you can get an skgxp transfer there in sub nanosecond time, but the process that needs the message is only runable. what is the time quantum? 10ms, so the reciever will eventuall get on a CPU to catch that really fast message >>>-----Original Message----- >>>From: oracle-l-bounce@freelists.org >>>[mailto:oracle-l-bounce@freelists.org] On Behalf Of Keith Moore >>>Sent: Friday, September 09, 2005 1:19 PM >>>To: Matthew Zito >>>Cc: kmoore@zephyrus.com; Oracle-L Freelists >>>Subject: Re: Infiniband for RAC 10g on Linux >>> >>>So, do you know the latency for IPoIB? Is it less than GB >>>Ethernet? Or about the same? >>> >>>Thanks. >>> >>>Keith >>> >>>> >>>> InfiniBand is fairly cheap. However, true IB for RAC >>>(uDAPL) is not >>>> supported in 10gR2. As far as we've been able to figure out, the >>>> InfiniBand support is for SDP and is undocumented (that's for >>>> SQL*Net) and for interconnect traffic is only IPoIB - >>>standard IP run >>>> over InfiniBand. Oracle has dropped plans to support uDAPL - >>>> apparently deciding to try to push their own proprietary >>>RDMA protocol. >>>> >>>> Matt >>>> >>>> On Sep 9, 2005, at 3:40 PM, Keith Moore wrote: >>>> >>>>> We are performance testing an Oracle 10g RAC setup with >>>two RedHat >>>>> Linux servers. Currently we are using Ethernet for the >>>interconnect. >>>>> >>>>> Has anyone used Infiniband? >>>>> >>>>> How well did it work and how much can we expect to pay? >>>>> >>>>> Thanks >>>>> Keith >>>>> >>>>> -- >>>>> http://www.freelists.org/webpage/oracle-l >>>>> >>>> >>>> >>> >>> >>>-- >>>http://www.freelists.org/webpage/oracle-l >>> -- http://www.freelists.org/webpage/oracle-l