From owner-freebsd-current@FreeBSD.ORG Sun Jun 23 08:53:20 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 8F28DDDA; Sun, 23 Jun 2013 08:53:20 +0000 (UTC) (envelope-from br@mail.bsdpad.com) Received: from mail.bsdpad.com (mail.bsdpad.com [109.107.176.56]) by mx1.freebsd.org (Postfix) with ESMTP id 497DF1457; Sun, 23 Jun 2013 08:53:18 +0000 (UTC) Received: from mail.bsdpad.com ([109.107.176.56]) by mail.bsdpad.com with smtp (Exim 4.80.1 (FreeBSD)) (envelope-from ) id 1Uqfif-000B64-8g; Sun, 23 Jun 2013 12:32:21 +0400 Received: by mail.bsdpad.com (nbSMTP-1.00) for uid 1001 br@mail.bsdpad.com; Sun, 23 Jun 2013 12:32:21 +0400 (MSK) Date: Sun, 23 Jun 2013 12:32:20 +0400 From: Ruslan Bukin To: Konstantin Belousov Subject: Re: Kernel build fails on ARM: Cannot fork: Cannot allocate memory Message-ID: <20130623083220.GA41511@mail.bsdpad.com> References: <51C1F53B.2080502@semihalf.com> <51C4A067.7010203@semihalf.com> <20130623065706.GV91021@kib.kiev.ua> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20130623065706.GV91021@kib.kiev.ua> User-Agent: Mutt/1.5.21 (2010-09-15) X-Mailman-Approved-At: Sun, 23 Jun 2013 11:43:03 +0000 Cc: Zbyszek Bodek , freebsd-current@freebsd.org, Jeff Roberson , freebsd-arm@FreeBSD.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 23 Jun 2013 08:53:20 -0000 On Sun, Jun 23, 2013 at 09:57:06AM +0300, Konstantin Belousov wrote: > > I don't really see a lot of wasted memory in the zones. There is > > certainly some. Can you give me sysctl vm from both a working and > > non-working kernel after the build is done or fails? > > Try this: > http://people.freebsd.org/~kib/misc/arm_bcache.1.patch > > Please _do_ notify me whether it compiled and helped with your problem. Btw, there is a problem while allocating 2GB RAM on armv7 boards while unmapped_buf_allowed == 1 (default): ----- ## Starting application at 0x40F00000 ... KDB: debugger backends: ddb KDB: current backend: ddb Copyright (c) 1992-2013 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 10.0-CURRENT #5 r252090M: Sun Jun 23 12:18:31 MSK 2013 root@intel.bsdpad.com:/usr/obj/arm.armv6/usr/home/br/dev/head/sys/ARNDALE arm FreeBSD clang version 3.3 (tags/RELEASE_33/final 183502) 20130610 WARNING: DIAGNOSTIC option enabled, expect reduced performance. CPU: Cortex A15 rev 4 (Cortex-A core) Supported features: ARM_ISA THUMB2 THUMBEE ARMv4 Security_Ext WB disabled EABT branch prediction enabled LoUU:2 LoC:2 LoUIS:2 Cache level 1: 32KB/64B 2-way data cache WB Read-Alloc Write-Alloc 32KB/64B 2-way instruction cache Read-Alloc Cache level 2: 1024KB/64B 16-way unified cache WB Read-Alloc Write-Alloc real memory = 2147483648 (2048 MB) panic: kmem_suballoc: bad status return of 3 ----- arm_bcache.1.patch resolves the issue above, but forced another one: ----- Trying to mount root from ufs:/dev/da0 []... WARNING: / was not properly dismounted warning: no time-of-day clock registered, system time will not be set accurately panic: __rw_wlock_hard: recursing but non-recursive rw pmap pv global @ /usr/home/br/dev/head/sys/arm/arm/pmap-v6.c:1289 ----- and there are no problems at all if unmapped_buf_allowed == 0 -Ruslan