From owner-svn-src-head@freebsd.org Thu Sep 14 19:51:21 2017 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 53F14E07AD1; Thu, 14 Sep 2017 19:51:21 +0000 (UTC) (envelope-from andreast@FreeBSD.org) Received: from smtp.imp.ch (smtp.imp.ch [IPv6:2001:4060:1:1001::13:197]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1BC6966A89; Thu, 14 Sep 2017 19:51:21 +0000 (UTC) (envelope-from andreast@FreeBSD.org) Received: from [10.6.32.30] (unknown [185.12.128.224]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by fgznet.ch (Postfix) with ESMTPSA id 92CB5C0B97; Thu, 14 Sep 2017 21:51:17 +0200 (CEST) Subject: Re: svn commit: r323290 - head/sys/vm To: Mark Johnston , src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org References: <201709072143.v87Lhdsg060310@repo.freebsd.org> From: Andreas Tobler Message-ID: Date: Thu, 14 Sep 2017 21:51:17 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <201709072143.v87Lhdsg060310@repo.freebsd.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: de-CH Content-Transfer-Encoding: 7bit X-Scanned-By: Asterix Submit on 127.0.1.1 X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Sep 2017 19:51:21 -0000 Hi Mark, On 07.09.17 23:43, Mark Johnston wrote: > Author: markj > Date: Thu Sep 7 21:43:39 2017 > New Revision: 323290 > URL: https://svnweb.freebsd.org/changeset/base/323290 > > Log: > Speed up vm_page_array initialization. > > We currently initialize the vm_page array in three passes: one to zero > the array, one to initialize the "order" field of each page (necessary > when inserting them into the vm_phys buddy allocator one-by-one), and > one to initialize the remaining non-zero fields and individually insert > each page into the allocator. > > Merge the three passes into one following a suggestion from alc: > initialize vm_page fields in a single pass, and use vm_phys_free_contig() > to efficiently insert physical memory segments into the buddy allocator. > This reduces the initialization time to a third or a quarter of what it > was before on most systems that I tested. > > Reviewed by: alc, kib > MFC after: 3 weeks > Differential Revision: https://reviews.freebsd.org/D12248 > > Modified: > head/sys/vm/vm_page.c > head/sys/vm/vm_phys.c > head/sys/vm/vm_phys.h I just found out that this commit breaks booting my powerpc64 Quad G5. It hangs, pressing ctrl-t shows: cmd: sh [*vm active pagequeue]. Sometimes it hangs earlier when the kbd is not there yet (usb), then I can't get the process/task where it hangs. Note, this kernel is compiled with the default gcc (4.2.1-FreeBSD) Any ideas how to find out what's wrong? The previous revision, r323289 seems stable, at least it survived several kernel builds. TIA, Andreas