From: Olga Kornievskaia Subject: size of nfsv4 writes Date: Wed, 04 Jun 2008 12:40:38 -0400 Message-ID: <4846C586.1050000@citi.umich.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed To: Trond Myklebust , Chuck Lever , linux-nfs@vger.kernel.org Return-path: Received: from citi.umich.edu ([141.211.133.111]:20373 "EHLO citi.umich.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751283AbYFDQkk (ORCPT ); Wed, 4 Jun 2008 12:40:40 -0400 Sender: linux-nfs-owner@vger.kernel.org List-ID: While testing NFSv4 performance over the 10GE network, we are seeing the following behavior and would like to know if it is normal or a bug in the client code. The server offers the max_write of 1M. The client mounts the server with the "wsize" option of 1M. Yet during the write we are seeing that the write size is at most 49K. Why does client never come close to 1M limit? Thanks. -Olga