From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sd0109e.au.ibm.com (d23rh905.au.ibm.com [202.81.18.225]) by e23smtp02.au.ibm.com (8.13.1/8.13.1) with ESMTP id m7R2X4Du015175 for ; Wed, 27 Aug 2008 12:33:04 +1000 Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by sd0109e.au.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m7R2WGo7272440 for ; Wed, 27 Aug 2008 12:32:16 +1000 Received: from d23av01.au.ibm.com (loopback [127.0.0.1]) by d23av01.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m7R2WG7u005958 for ; Wed, 27 Aug 2008 12:32:16 +1000 Message-ID: <48B4BCAE.7000906@linux.vnet.ibm.com> Date: Wed, 27 Aug 2008 08:02:14 +0530 From: Balbir Singh Reply-To: balbir@linux.vnet.ibm.com MIME-Version: 1.0 Subject: Re: oom-killer why ? References: <48B296C3.6030706@iplabs.de> <48B3E4CC.9060309@linux.vnet.ibm.com> <48B3F04B.9030308@iplabs.de> <48B401F8.9010703@linux.vnet.ibm.com> <48B402B1.8030902@linux.vnet.ibm.com> <1219777788.24829.53.camel@dhcp-100-19-198.bos.redhat.com> In-Reply-To: <1219777788.24829.53.camel@dhcp-100-19-198.bos.redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Larry Woodman Cc: Marco Nietz , Linux Memory Management List List-ID: Larry Woodman wrote: > On Tue, 2008-08-26 at 18:48 +0530, Balbir Singh wrote: >> Balbir Singh wrote: >> >> Looking closely, may be there is a leak like Christoph suggested (most of the >> pages have been consumed by the kernel) - only 280kB+244kB is in use by user >> pages. The rest has either leaked or in use by the kernel. >> > > There is no leak. Between the ptepages(pagetables:152485), the > memmap(4456448 pages of RAM * 32bytes = 34816 pages) and the > slabcache(slab:35543) you can account for ~99% of the Normal zone and > its wired. You simply cant run a large database without hugepages and > without CONFIG_HIGHPTE set and not exhaust Lowmem on a 16GB x86 system. Thanks for looking at it more closely, Yes, we do need to have CONFIG_HIGHPTE enabled. -- Balbir -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org