From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d28relay02.in.ibm.com (d28relay02.in.ibm.com [9.184.220.59]) by e28esmtp04.in.ibm.com (8.13.1/8.13.1) with ESMTP id m7QDIfsf020251 for ; Tue, 26 Aug 2008 18:48:41 +0530 Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay02.in.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m7QDIftd1806400 for ; Tue, 26 Aug 2008 18:48:41 +0530 Received: from d28av04.in.ibm.com (loopback [127.0.0.1]) by d28av04.in.ibm.com (8.13.1/8.13.3) with ESMTP id m7QDIeIS012339 for ; Tue, 26 Aug 2008 18:48:41 +0530 Message-ID: <48B402B1.8030902@linux.vnet.ibm.com> Date: Tue, 26 Aug 2008 18:48:41 +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> In-Reply-To: <48B401F8.9010703@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Marco Nietz Cc: balbir@linux.vnet.ibm.com, linux-mm@kvack.org List-ID: Balbir Singh wrote: > Marco Nietz wrote: >> Balbir Singh schrieb: >> >>>> DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB >>>> present:0kB pages_scanned:0 all_unreclaimable? no >>>> lowmem_reserve[]: 0 0 880 17392 >>> pages_scanned is 0 >> Is'nt this zone irrelevant for a 32bit Kernel ? >> > > Doesn't matter, since you have 0 present pages. > >>>> Normal free:3664kB min:3756kB low:4692kB high:5632kB active:280kB >>>> inactive:244kB present:901120kB pages_scanned:593 all_unreclaimable? yes >>>> lowmem_reserve[]: 0 0 0 132096 >>> pages_scanned is 593 and all_unreclaimable is yes >> Reclaimable means, that the Pages are reusable for other Purposes, or not ? >> > > It is set by a background routine that tries to reclaim pages (balance_pgdat()), > to indicate that it was unable to reclaim any pages from the zone, even though > it did a certain amount of work to do so. > >>>> HighMem free:5941820kB min:512kB low:18148kB high:35784kB >>>> active:4408096kB inactive:5494404kB present:16908288kB pages_scanned:0 >>>> all_unreclaimable? no >>> pages_scanned is 0 >>> Do you have CONFIG_HIGHPTE set? I suspect you don't (I don't really know the >>> debian etch configuration) >> No, it's not set in the running Debian Kernel. > > Looks like CONFIG_HIGHPTE=y would have helped allocate pages since you do have > pages in HighMem available. > 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. -- 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