From: "Talpey, Thomas" Subject: Re: [RFC,PATCH 4/14] knfsd: has_wspace per transport Date: Fri, 18 May 2007 09:44:15 -0400 Message-ID: References: <20070516192211.GJ9626@sgi.com> <20070516211053.GE18927@fieldses.org> <20070517071202.GE27247@sgi.com> <17996.11983.278205.708747@notabene.brown> <20070518040509.GC5104@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net To: Greg Banks Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1Hp2kn-0008SO-6V for nfs@lists.sourceforge.net; Fri, 18 May 2007 06:44:21 -0700 Received: from mx2.netapp.com ([216.240.18.37]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1Hp2kq-0005G6-0z for nfs@lists.sourceforge.net; Fri, 18 May 2007 06:44:24 -0700 In-Reply-To: <20070518040509.GC5104@sgi.com> References: <20070516192211.GJ9626@sgi.com> <20070516211053.GE18927@fieldses.org> <20070517071202.GE27247@sgi.com> <17996.11983.278205.708747@notabene.brown> <20070518040509.GC5104@sgi.com> 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 At 12:05 AM 5/18/2007, Greg Banks wrote: >> Do that mean that RDMA will never >> reject a write due to lack of space? > >No, it means that the current RDMA send code will block waiting >for space to become available. That's right, nfsd threads block on >the network. Steel yourself, there's worse to come. Huh? RDMA Sends never block, except to wait for the handshake as the hardware picks up the work request. What's the "worse" part you refer to? Tom. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs