From owner-freebsd-hackers@FreeBSD.ORG Wed Apr 18 16:39:00 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 56D231065673; Wed, 18 Apr 2012 16:39:00 +0000 (UTC) (envelope-from gljennjohn@googlemail.com) Received: from mail-ey0-f182.google.com (mail-ey0-f182.google.com [209.85.215.182]) by mx1.freebsd.org (Postfix) with ESMTP id AE2E28FC24; Wed, 18 Apr 2012 16:38:59 +0000 (UTC) Received: by eaaf13 with SMTP id f13so2128119eaa.13 for ; Wed, 18 Apr 2012 09:38:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=date:from:to:cc:subject:message-id:in-reply-to:references:reply-to :x-mailer:mime-version:content-type:content-transfer-encoding; bh=pD2EF2A0TEThU6P3Tf4gU+/YRQpRnunKnzsu0HFu1rg=; b=RRWInFNklEy8mzQB4b35dDahwlDhQUTwU+L4OUCJiTeXr1MEN+cydMAez8H8w58HH6 mp+JvvL7hjiOIkrXZW9xTRUUYAkyHd7MHpaosAiWhEVdZD1iUjPKYOIB2wmF7LPGbwem TveIMBehT71Qix7kJAAdmcOd2kyfij+rtrxQ3dlZ02YUj1t61+nCYAjEe5vdmC6fG9s2 peup3F2/RTyLVS4vzvpkFC2k0hn692Gia6nsLUKqVrN7LvRibvM16U3i71Wp4t/u4QwZ KuZAoaCCfh7e8UEqQiMgQTLs1ugU0McuvAsVxCFcnpTvqP8y496y6qNZvNecsoy82zyU kHfQ== Received: by 10.213.15.143 with SMTP id k15mr275821eba.251.1334767138611; Wed, 18 Apr 2012 09:38:58 -0700 (PDT) Received: from ernst.jennejohn.org (p54895A89.dip.t-dialin.net. [84.137.90.137]) by mx.google.com with ESMTPS id r44sm120092863eef.2.2012.04.18.09.38.56 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 18 Apr 2012 09:38:57 -0700 (PDT) Date: Wed, 18 Apr 2012 18:38:55 +0200 From: Gary Jennejohn To: Adrian Chadd Message-ID: <20120418183855.4b429ebc@ernst.jennejohn.org> In-Reply-To: References: <20120403193124.46ad9de9@ernst.jennejohn.org> <20120411192153.5672b62c@ernst.jennejohn.org> <20120417211558.4793b705@ernst.jennejohn.org> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.6; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: freebsd-hackers , Jerry Toung Subject: Re: CAM disk I/O starvation X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: gljennjohn@googlemail.com List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Apr 2012 16:39:00 -0000 On Tue, 17 Apr 2012 12:30:15 -0700 Adrian Chadd wrote: > On 17 April 2012 12:15, Gary Jennejohn wrote: > > I still have the old problem kernel around, but it's probably not > > instrumented for any meaningful diagnoses. > > Well do you know which version of which tree you used to build that? > If it's head, you could "just" keep an earlier source tree around to > build a kernel from. > My /usr/src is from SVN, so I just need to boot it and do uname to get the revision. As a former src committer I like to be on the bleeding edge and I always run HEAD. -- Gary Jennejohn