From owner-freebsd-current@FreeBSD.ORG Thu Mar 4 11:35:41 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A957916A4CE for ; Thu, 4 Mar 2004 11:35:41 -0800 (PST) Received: from oahu.WURLDLINK.NET (oahu.wurldlink.net [66.193.144.7]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5D68643D39 for ; Thu, 4 Mar 2004 11:35:41 -0800 (PST) (envelope-from vince@oahu.WURLDLINK.NET) Received: from oahu.WURLDLINK.NET (vince@localhost.WURLDLINK.NET [127.0.0.1]) by oahu.WURLDLINK.NET (8.12.9/8.12.9) with ESMTP id i24JYqqQ012396; Thu, 4 Mar 2004 09:35:03 -1000 (HST) Received: from localhost (vince@localhost)i24JYpHU012393; Thu, 4 Mar 2004 09:34:51 -1000 (HST) Date: Thu, 4 Mar 2004 09:34:51 -1000 (HST) From: Vincent Poy To: Andrew Gallatin In-Reply-To: <16455.33748.860265.157572@grasshopper.cs.duke.edu> Message-ID: <20040304093201.X8264-100000@oahu.WURLDLINK.NET> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: current@freebsd.org Subject: Re: -CURRENT kernel panic X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Thu, 04 Mar 2004 19:35:41 -0000 On Thu, 4 Mar 2004, Andrew Gallatin wrote: > Vincent Poy writes: > > On Thu, 4 Mar 2004, Andrew Gallatin wrote: > > > > > Just add vm.kmem_size=VALUE to /boot/loader.conf. That way you don't > > > need to rebuild a kernel. I run with vm.kmem_size=429391872 > > > > Does that actually work since I thought unless you alter the > > kernel, it won't use more than 200KB for the kmem_map? > > Sure.. read the code (kern/kern_malloc.c:kmeminit) The > VM_KMEM_SIZE_MAX comes first, then the tunable from the loader. Interesting. I'm still wondering what the VM_KMEM_SIZE_SCALE number represents. > > > Even after bumping the limits, I'm seeing a repeatable panic when > > > allocating a large amount of kernel memory ("panic: pmap_enter: > > > attempted pmap_enter on 4MB page"). See yesterday's message > > > with that subject for details.. > > > > Just checked the archives and yours seems to jhave more variables > > than mines from the panic message. > > Can you describe the panic you see? Everything including buildworld doesn't cause the panic except at 4AM at night when I do a dump | restore of the /usr partition which shows just this: panic: kmem_malloc (4096): kmem_map too small: 377487360 total allocated at line 341 in file /usr/src/sys/vm/vm_kern.c cpuid=0; Debugger("panic") Stopped at Debugger+0x46: xchgl %ebx, in_Debugger.0 db> This is from dmesg.out: CPU: Mobile Intel(R) Pentium(R) 4 - M CPU 2.60GHz (2592.37-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf29 Stepping = 9 Features=0xbfebf9ff real memory = 2147360768 (2047 MB) avail memory = 2095669248 (1998 MB) Pentium Pro MTRR support enabled Cheers, Vince - vince@WURLDLINK.NET - Vice President ________ __ ____ Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ] WurldLink Corporation / / / / | / | __] ] San Francisco - Honolulu - Hong Kong / / / / / |/ / | __] ] HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____] Almighty1@IRC - oahu.DAL.NET Hawaii's DALnet IRC Network Server Admin