From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mt1.gw.fujitsu.co.jp ([10.0.50.74]) by fgwmail6.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id mB3564G4021918 for (envelope-from kamezawa.hiroyu@jp.fujitsu.com); Wed, 3 Dec 2008 14:06:04 +0900 Received: from smail (m4 [127.0.0.1]) by outgoing.m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 8BA8045DE54 for ; Wed, 3 Dec 2008 14:06:04 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (s4.gw.fujitsu.co.jp [10.0.50.94]) by m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 5A4F245DE53 for ; Wed, 3 Dec 2008 14:06:04 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 398B51DB803C for ; Wed, 3 Dec 2008 14:06:04 +0900 (JST) Received: from m107.s.css.fujitsu.com (m107.s.css.fujitsu.com [10.249.87.107]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id D7E171DB803B for ; Wed, 3 Dec 2008 14:06:00 +0900 (JST) Date: Wed, 3 Dec 2008 14:05:12 +0900 From: KAMEZAWA Hiroyuki Subject: [PATCH 15/21] memcg-show-reclaim-stat.patch Message-Id: <20081203140512.85695b25.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20081203134718.6b60986f.kamezawa.hiroyu@jp.fujitsu.com> References: <20081203134718.6b60986f.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: "linux-mm@kvack.org" , "akpm@linux-foundation.org" , "balbir@linux.vnet.ibm.com" , "nishimura@mxp.nes.nec.co.jp" , "kosaki.motohiro@jp.fujitsu.com" , "linux-kernel@vger.kernel.org" List-ID: added following four field to memory.stat file. - inactive_ratio - recent_rotated_anon - recent_rotated_file - recent_scanned_anon - recent_scanned_file Changelog: - unified inactive_ratio patch and recent_rotate patch. - added documentation. - put under CONFIG_DEBUG_VM. Acked-by: Rik van Riel Signed-off-by: KAMEZAWA Hiroyuki Signed-off-by: KOSAKI Motohiro Documentation/controllers/memory.txt | 25 +++++++++++++++++++++++++ mm/memcontrol.c | 30 ++++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+) Index: mmotm-2.6.28-Dec02/mm/memcontrol.c =================================================================== --- mmotm-2.6.28-Dec02.orig/mm/memcontrol.c +++ mmotm-2.6.28-Dec02/mm/memcontrol.c @@ -1810,6 +1810,36 @@ static int mem_control_stat_show(struct cb->fill(cb, "unevictable", unevictable * PAGE_SIZE); } + +#ifdef CONFIG_DEBUG_VM + cb->fill(cb, "inactive_ratio", mem_cont->inactive_ratio); + + { + int nid, zid; + struct mem_cgroup_per_zone *mz; + unsigned long recent_rotated[2] = {0, 0}; + unsigned long recent_scanned[2] = {0, 0}; + + for_each_online_node(nid) + for (zid = 0; zid < MAX_NR_ZONES; zid++) { + mz = mem_cgroup_zoneinfo(mem_cont, nid, zid); + + recent_rotated[0] += + mz->reclaim_stat.recent_rotated[0]; + recent_rotated[1] += + mz->reclaim_stat.recent_rotated[1]; + recent_scanned[0] += + mz->reclaim_stat.recent_scanned[0]; + recent_scanned[1] += + mz->reclaim_stat.recent_scanned[1]; + } + cb->fill(cb, "recent_rotated_anon", recent_rotated[0]); + cb->fill(cb, "recent_rotated_file", recent_rotated[1]); + cb->fill(cb, "recent_scanned_anon", recent_scanned[0]); + cb->fill(cb, "recent_scanned_file", recent_scanned[1]); + } +#endif + return 0; } Index: mmotm-2.6.28-Dec02/Documentation/controllers/memory.txt =================================================================== --- mmotm-2.6.28-Dec02.orig/Documentation/controllers/memory.txt +++ mmotm-2.6.28-Dec02/Documentation/controllers/memory.txt @@ -289,6 +289,31 @@ will be charged as a new owner of it. Because rmdir() moves all pages to parent, some out-of-use page caches can be moved to the parent. If you want to avoid that, force_empty will be useful. +5.2 stat file + memory.stat file includes following statistics (now) + cache - # of pages from page-cache and shmem. + rss - # of pages from anonymous memory. + pgpgin - # of event of charging + pgpgout - # of event of uncharging + active_anon - # of pages on active lru of anon, shmem. + inactive_anon - # of pages on active lru of anon, shmem + active_file - # of pages on active lru of file-cache + inactive_file - # of pages on inactive lru of file cache + unevictable - # of pages cannot be reclaimed.(mlocked etc) + + Below is depend on CONFIG_DEBUG_VM. + inactive_ratio - VM inernal parameter. (see mm/page_alloc.c) + recent_rotated_anon - VM internal parameter. (see mm/vmscan.c) + recent_rotated_file - VM internal parameter. (see mm/vmscan.c) + recent_scanned_anon - VM internal parameter. (see mm/vmscan.c) + recent_scanned_file - VM internal parameter. (see mm/vmscan.c) + + Memo: + recent_rotated means recent frequency of lru rotation. + recent_scanned means recent # of scans to lru. + showing for better debug please see the code for meanings. + + 6. Hierarchy support The memory controller supports a deep hierarchy and hierarchical accounting. -- 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