From: Olaf Kirch Subject: RFC: Improved Zerocopy for NFS Date: Tue, 13 Feb 2007 17:07:41 +0100 Message-ID: <200702131707.42796.olaf.kirch@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: nfs@lists.sourceforge.net Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1HH0Co-0001LO-DA for nfs@lists.sourceforge.net; Tue, 13 Feb 2007 08:08:34 -0800 Received: from rgminet01.oracle.com ([148.87.113.118]) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1HH0Cm-0000tg-2e for nfs@lists.sourceforge.net; Tue, 13 Feb 2007 08:08:33 -0800 Received: from rgmgw2.us.oracle.com (rgmgw2.us.oracle.com [138.1.186.111]) by rgminet01.oracle.com (Switch-3.2.4/Switch-3.1.6) with ESMTP id l1DG8CpA024549 for ; Tue, 13 Feb 2007 09:08:12 -0700 Received: from rcsmt251.oracle.com (rcsmt251.oracle.com [148.87.90.196]) by rgmgw2.us.oracle.com (Switch-3.2.4/Switch-3.1.7) with ESMTP id l1DFihbC019844 for ; Tue, 13 Feb 2007 09:08:10 -0700 List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net Hi all, during the last week or so I did some patches to the sunrpc code that should help reduce the number of memcpy operations we do there. They implement * IOAT support in the rpc client code * TCP zerocopy in the rpc server code Both have been lightly tested (the former severely hampered by the lack of ioat capable hardware, which is why I had to write a "memcpy dma" module :-) The code is available from http://oss.oracle.com/~okir/nfs-zerocopy/ Please let me know what you think. Olaf -- Olaf Kirch | --- o --- Nous sommes du soleil we love when we play okir@lst.de | / | \ sol.dhoop.naytheet.ah kin.ir.samse.qurax ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs