Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 3 Jul 2001 19:45:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 3 Jul 2001 19:44:51 -0400 Received: from pedigree.cs.ubc.ca ([142.103.6.50]:14077 "EHLO pedigree.cs.ubc.ca") by vger.kernel.org with ESMTP id ; Tue, 3 Jul 2001 19:44:40 -0400 Date: Tue, 3 Jul 2001 16:44:36 -0700 From: Dima Brodsky To: Linux Kernel List Cc: Dima Brodsky Subject: RPC: rpciod waiting on sync task! Message-ID: <20010703164436.A20309@cascade.cs.ubc.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, I modified the linux NFS client, kernel 2.4.5 and 2.4.6-pre7, to send an extra SETATTR, with special values, within nfs_open and nfs_release so that I would be able to track file open and close. For the server I am using a slightly modified linux user level nfs server. What I noticed is that after this change I get: RPC: rpciod waiting on sync task! coming from the kernel under heavy read load, especially with larger chunks of data 8k, 16, and 64k. The code introduced into nfs_open and nfs_release is: memset( &fattr, 0, sizeof(struct nfs_fattr) ); memset( &attr, 0, sizeof(struct iattr) ); attr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_SIZE; attr.ia_mode = inode->i_mode; attr.ia_uid = -10; attr.ia_gid = -10; attr.ia_size = -10; attr.ia_atime = -1; attr.ia_mtime = -1; attr.ia_ctime = -1; attr.ia_attr_flags = -1; error = NFS_PROTO(inode)->setattr(inode, &fattr, &attr); if ( error ) { printk( "nfs_network_openclose: error=%d\n", error ); } Does anybody see any problems with this code? The unmodified nfs client works fine with the unmodified nfs server. Thanks ttyl Dima -- Dima Brodsky dima@cs.ubc.ca http://www.cs.ubc.ca/~dima 201-2366 Main Mall (604) 822-6179 (Office) Department of Computer Science (604) 822-2895 (DSG Lab) University of British Columbia, Canada (604) 822-5485 (FAX) Computers are like Old Testament gods; lots of rules and no mercy. (Joseph Campbell) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/