From owner-freebsd-hackers@FreeBSD.ORG Wed Sep 24 16:41:50 2008 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F29E8106569C for ; Wed, 24 Sep 2008 16:41:50 +0000 (UTC) (envelope-from jdw@wheelhouse.org) Received: from mail.nearlyfreespeech.net (x1.phxe.nearlyfreespeech.net [208.94.116.235]) by mx1.freebsd.org (Postfix) with ESMTP id CDB8B8FC12 for ; Wed, 24 Sep 2008 16:41:50 +0000 (UTC) (envelope-from jdw@wheelhouse.org) Received: from [10.0.1.201] (78.193.33.65.cfl.res.rr.com [65.33.193.78]) by mail.nearlyfreespeech.net (Postfix) with ESMTPSA id 904C3EBC4A for ; Wed, 24 Sep 2008 09:26:24 -0700 (MST) Message-Id: From: Jeff Wheelhouse To: freebsd-hackers@freebsd.org In-Reply-To: Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v929.2) Date: Wed, 24 Sep 2008 12:26:23 -0400 References: <8185F68B-C443-4891-BEC2-5E3D453DDC93@wheelhouse.org> X-Mailer: Apple Mail (2.929.2) X-Mailman-Approved-At: Wed, 24 Sep 2008 16:51:22 +0000 Subject: Re: Major SMP problems with lstat/namei X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Sep 2008 16:41:51 -0000 On Sep 24, 2008, at 6:12 AM, Ivan Voras wrote: > There is nothing that can be done within the 6.x branch. 7.x contains > many improvements but I think only 8.x will directly change the > lockmgr > and the namei cache. The best things you can try right now is to use > 7-STABLE (or soon to be released 7.1; you might need tuning with > 7.0-RELEASE) or try 8-CURRENT (it's quite stable). Really? Nothing? We get lockmgr-related panics on FreeBSD 7.0, as detailed elsewhere on this list. Stability issues aside, what else would we need to tune on 7.0, besides enabling the ULE scheduler, and how much benefit would we really get? These servers are in production, so 8-CURRENT is not an option. I've already had my knuckles rapped by a customer for trying 7.1-PRERELEASE on one of their machines. Thanks, Jeff