From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx199.postini.com [74.125.245.199]) by kanga.kvack.org (Postfix) with SMTP id F372B6B0068 for ; Wed, 12 Dec 2012 20:49:13 -0500 (EST) Message-ID: <50C933E2.3070608@cn.fujitsu.com> Date: Thu, 13 Dec 2012 09:48:18 +0800 From: Tang Chen MIME-Version: 1.0 Subject: Re: [PATCH v3 3/5] page_alloc: Introduce zone_movable_limit[] to keep movable limit for nodes References: <1355193207-21797-1-git-send-email-tangchen@cn.fujitsu.com> <1355193207-21797-4-git-send-email-tangchen@cn.fujitsu.com> <50C6A36C.5030606@huawei.com> <50C6A93A.50404@cn.fujitsu.com> <1355225313.1919.1.camel@kernel.cn.ibm.com> <50C7D490.60409@huawei.com> <50C849DD.20405@cn.fujitsu.com> <1355304570.1542.0.camel@kernel.cn.ibm.com> <50C85D2D.5030309@cn.fujitsu.com> <1355358485.1508.2.camel@kernel.cn.ibm.com> In-Reply-To: <1355358485.1508.2.camel@kernel.cn.ibm.com> Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=UTF-8; format=flowed Sender: owner-linux-mm@kvack.org List-ID: To: Simon Jeons Cc: Jiang Liu , Jianguo Wu , hpa@zytor.com, akpm@linux-foundation.org, wency@cn.fujitsu.com, laijs@cn.fujitsu.com, linfeng@cn.fujitsu.com, yinghai@kernel.org, isimatu.yasuaki@jp.fujitsu.com, rob@landley.net, kosaki.motohiro@jp.fujitsu.com, minchan.kim@gmail.com, mgorman@suse.de, rientjes@google.com, rusty@rustcorp.com.au, lliubbo@gmail.com, jaegeuk.hanse@gmail.com, tony.luck@intel.com, glommer@parallels.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org On 12/13/2012 08:28 AM, Simon Jeons wrote: > On Wed, 2012-12-12 at 18:32 +0800, Tang Chen wrote: >> Hi Simon, >> >> On 12/12/2012 05:29 PM, Simon Jeons wrote: >>> >>> Thanks for your clarify. >>> >>> Enable PAE on x86 32bit kernel, 8G memory, movablecore=6.5G >> >> Could you please provide more info ? >> >> Such as the whole kernel commondline. And did this happen after >> you applied these patches ? What is the output without these >> patches ? > > This result is without the patches, I didn't add more kernel > commandline, just movablecore=6.5G, but output as you see is strange, so > what happened? Hi Simon, For now, I'm not quite sure what happened. Could you please provide the output without the movablecore=6.5G option ? Seeing from your output, your totalpages=2051391, which is about 8G. But the memory mapped for your node 0 is obviously not enough. When we have high memory, ZONE_MOVABLE is taken from ZONE_HIGH. So the first line, 8304MB HIGHMEM available is also strange. So I think we need more info to find out the problem. :) Thank. :) > >> >> Thanks. :) >> >>>> >>>> [ 0.000000] 8304MB HIGHMEM available. >>>> [ 0.000000] 885MB LOWMEM available. >>>> [ 0.000000] mapped low ram: 0 - 375fe000 >>>> [ 0.000000] low ram: 0 - 375fe000 >>>> [ 0.000000] Zone ranges: >>>> [ 0.000000] DMA [mem 0x00010000-0x00ffffff] >>>> [ 0.000000] Normal [mem 0x01000000-0x375fdfff] >>>> [ 0.000000] HighMem [mem 0x375fe000-0x3e5fffff] >>>> [ 0.000000] Movable zone start for each node >>>> [ 0.000000] Early memory node ranges >>>> [ 0.000000] node 0: [mem 0x00010000-0x0009cfff] >>>> [ 0.000000] node 0: [mem 0x00100000-0x1fffffff] >>>> [ 0.000000] node 0: [mem 0x20200000-0x3fffffff] >>>> [ 0.000000] node 0: [mem 0x40200000-0xb69cbfff] >>>> [ 0.000000] node 0: [mem 0xb6a46000-0xb6a47fff] >>>> [ 0.000000] node 0: [mem 0xb6b1c000-0xb6cfffff] >>>> [ 0.000000] node 0: [mem 0x00000000-0x3e5fffff] >>>> [ 0.000000] On node 0 totalpages: 2051391 >>>> [ 0.000000] free_area_init_node: node 0, pgdat c0c26a80, >>>> node_mem_map >>>> f19de200 >>>> [ 0.000000] DMA zone: 32 pages used for memmap >>>> [ 0.000000] DMA zone: 0 pages reserved >>>> [ 0.000000] DMA zone: 3949 pages, LIFO batch:0 >>>> [ 0.000000] Normal zone: 1740 pages used for memmap >>>> [ 0.000000] Normal zone: 220466 pages, LIFO batch:31 >>>> [ 0.000000] HighMem zone: 16609 pages used for memmap >>>> [ 0.000000] HighMem zone: 1808595 pages, LIFO batch:31 >>> >>> Why zone movable disappear? >>> >>> >>> >>> >> > > > -- 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