From owner-freebsd-current@FreeBSD.ORG Tue Mar 24 20:00:12 2015 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4079C10F for ; Tue, 24 Mar 2015 20:00:12 +0000 (UTC) Received: from courriel.site.uottawa.ca (eecsmail.engineering.uottawa.ca [137.122.24.224]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "*.site.uottawa.ca", Issuer "PositiveSSL CA 2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 023BCDFE for ; Tue, 24 Mar 2015 20:00:11 +0000 (UTC) Received: from admin16.site.uottawa.ca (admin16.site.uottawa.ca [137.122.90.250]) (authenticated bits=0) by courriel.site.uottawa.ca (8.14.5/8.14.5) with ESMTP id t2OK099h018331 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 24 Mar 2015 16:00:09 -0400 (EDT) (envelope-from kwhite@site.uottawa.ca) Date: Tue, 24 Mar 2015 16:00:09 -0400 (EDT) From: Keith White To: Rui Paulo Subject: Re: panic: UMA: Increase vm.boot_pages on Dell R920 r279210 In-Reply-To: <1A6D6059-21A2-467C-979D-E413623753FD@me.com> Message-ID: <20150324155426.M7719@admin16.site.uottawa.ca> References: <20150319095306.C7719@admin16.site.uottawa.ca> <528B3B45-378E-44CD-A286-0269E84C4F70@me.com> <54997.66.186.85.232.1427195954.squirrel@courriel.site.uottawa.ca> <1A6D6059-21A2-467C-979D-E413623753FD@me.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 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: Tue, 24 Mar 2015 20:00:12 -0000 On Tue, 24 Mar 2015, Rui Paulo wrote: > On Mar 24, 2015, at 04:19, kwhite@site.uottawa.ca wrote: >> >> I'm using /boot/loader.conf. Is there another place I should be doing this? > > No, that's correct, but apparently there's a problem: the RDTUN sysctl is not picked up early enough. Can you try this patch? I haven't really tested it. :-) > > diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c > index 79665ba..a764788 100644 > --- a/sys/vm/vm_page.c > +++ b/sys/vm/vm_page.c > @@ -134,8 +134,9 @@ long first_page; > int vm_page_zero_count; > > static int boot_pages = UMA_BOOT_PAGES; > -SYSCTL_INT(_vm, OID_AUTO, boot_pages, CTLFLAG_RDTUN, &boot_pages, 0, > - "number of pages allocated for bootstrapping the VM system"); > +SYSCTL_INT(_vm, OID_AUTO, boot_pages, CTLFLAG_RDTUN | CTLFLAG_NOFETCH, > + &boot_pages, 0, > + "number of pages allocated for bootstrapping the VM system"); > > static int pa_tryrelock_restart; > SYSCTL_INT(_vm, OID_AUTO, tryrelock_restart, CTLFLAG_RD, > @@ -349,6 +350,7 @@ vm_page_startup(vm_offset_t vaddr) > * Allocate memory for use when boot strapping the kernel memory > * allocator. > */ > + TUNABLE_INT_FETCH("vm.boot_pages", &boot_pages); > new_end = end - (boot_pages * UMA_SLAB_SIZE); > new_end = trunc_page(new_end); > mapped = pmap_map(&vaddr, new_end, end, > @@ -443,7 +445,7 @@ vm_page_startup(vm_offset_t vaddr) > > > -- > Rui Paulo Patch tried. Success! I now get this after setting vm.boot_pages=1024 in /boot/loader.conf: Booting... GDB: no debug ports present KDB: debugger backends: ddb KDB: current backend: ddb Copyright (c) 1992-2015 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 11.0-CURRENT #1: Tue Mar 24 13:44:48 UTC 2015 root@:/usr/obj/usr/src/sys/GENERIC amd64 FreeBSD clang version 3.5.1 (tags/RELEASE_351/final 225668) 20150115 WARNING: WITNESS option enabled, expect reduced performance. UMA startup boot_pages: 1024 ... And can start all 120 processors. Thanks! ...keith -- Keith White, genie.uottawa.ca engineering.uottawa.ca kwhite@uottawa.ca [+1 613 562 5800 x6681]