Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265269AbUAPFpR (ORCPT ); Fri, 16 Jan 2004 00:45:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265274AbUAPFpR (ORCPT ); Fri, 16 Jan 2004 00:45:17 -0500 Received: from mta7.pltn13.pbi.net ([64.164.98.8]:36842 "EHLO mta7.pltn13.pbi.net") by vger.kernel.org with ESMTP id S265269AbUAPFpO (ORCPT ); Fri, 16 Jan 2004 00:45:14 -0500 Date: Thu, 15 Jan 2004 21:44:49 -0800 From: Mike Fedyk To: Trond Myklebust Cc: Bill Davidsen , linux-kernel@vger.kernel.org Subject: Re: 2.6.0 NFS-server low to 0 performance Message-ID: <20040116054449.GH1748@srv-lnx2600.matchmail.com> Mail-Followup-To: Trond Myklebust , Bill Davidsen , linux-kernel@vger.kernel.org References: <1073745028.1146.13.camel@nidelv.trondhjem.org> <1073917652.1639.21.camel@nidelv.trondhjem.org> <1073920323.1639.28.camel@nidelv.trondhjem.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1073920323.1639.28.camel@nidelv.trondhjem.org> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1239 Lines: 27 On Mon, Jan 12, 2004 at 10:12:03AM -0500, Trond Myklebust wrote: > > > The 8k limit that you find in RFC1094 was an ad-hoc "limit" based purely > > on testing using pre-1989 hardware. AFAIK most if not all of the > > commercial vendors (Solaris, AIX, Windows/Hummingbird, EMC and Netapp) > > are all currently setting the defaults to 32k block sizes for both TCP > > and UDP. > > Most of them want to bump that to a couple of Mbyte in the very near > > future. > > Note: the future Mbyte sizes can, of course, only be supported on TCP > since UDP has an inherent limit at 64k. The de-facto limit on UDP is > therefore likely to remain at 32k (although I think at least one vendor > has already tried pushing it to 48k). Does the RPC max size limit change with memory or filesystem? I have one system (K7 2200, 1.5GB, ext3) where it uses 32K RPCs, and another (P2 300, 168MB, reiserfs3) and it uses 8k RPCs, even if I request larger max sizes, and they're both running 2.6.1-bk2. Strange... - 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/