From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763794AbYB1Tqi (ORCPT ); Thu, 28 Feb 2008 14:46:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763337AbYB1TmM (ORCPT ); Thu, 28 Feb 2008 14:42:12 -0500 Received: from mx1.redhat.com ([66.187.233.31]:45311 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761072AbYB1TmA (ORCPT ); Thu, 28 Feb 2008 14:42:00 -0500 Message-Id: <20080228192929.117668438@redhat.com> References: <20080228192908.126720629@redhat.com> User-Agent: quilt/0.46-1 Date: Thu, 28 Feb 2008 14:29:21 -0500 From: Rik van Riel To: linux-kernel@vger.kernel.org Cc: KOSAKI Motohiro , Lee Schermerhorn , linux-mm@kvack.org, Lee Schermerhorn Subject: [patch 13/21] Non-reclaimable page statistics Content-Disposition: inline; filename=noreclaim-01.2-report-nonreclaimable-memory.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org V2 -> V3: + rebase to 23-mm1 atop RvR's split LRU series V1 -> V2: no changes Report non-reclaimable pages per zone and system wide. Note: may want to track/report some specific reasons for nonreclaimability for deciding when to splice the noreclaim lists back to the normal lru. That will be tricky, especially in shrink_active_list(), where we'd need someplace to save the per page reason for non-reclaimability until the pages are dumped back onto the noreclaim list from the pagevec. Note: my tests indicate that NR_NORECLAIM and probably the other LRU stats aren't being maintained properly--especially with large amounts of mlocked memory and the mlock patch in this series installed. Can't be sure of this, as I don't know why the pages are on the noreclaim list. Needs further investigation. Signed-off-by: Lee Schermerhorn Index: linux-2.6.25-rc2-mm1/mm/page_alloc.c =================================================================== --- linux-2.6.25-rc2-mm1.orig/mm/page_alloc.c 2008-02-28 11:05:04.000000000 -0500 +++ linux-2.6.25-rc2-mm1/mm/page_alloc.c 2008-02-28 12:47:36.000000000 -0500 @@ -1899,12 +1899,20 @@ void show_free_areas(void) } printk("Active_anon:%lu active_file:%lu inactive_anon%lu\n" - " inactive_file:%lu dirty:%lu writeback:%lu unstable:%lu\n" + " inactive_file:%lu" +//TODO: check/adjust line lengths +#ifdef CONFIG_NORECLAIM + " noreclaim:%lu" +#endif + " dirty:%lu writeback:%lu unstable:%lu\n" " free:%lu slab:%lu mapped:%lu pagetables:%lu bounce:%lu\n", global_page_state(NR_ACTIVE_ANON), global_page_state(NR_ACTIVE_FILE), global_page_state(NR_INACTIVE_ANON), global_page_state(NR_INACTIVE_FILE), +#ifdef CONFIG_NORECLAIM + global_page_state(NR_NORECLAIM), +#endif global_page_state(NR_FILE_DIRTY), global_page_state(NR_WRITEBACK), global_page_state(NR_UNSTABLE_NFS), @@ -1931,6 +1939,9 @@ void show_free_areas(void) " inactive_anon:%lukB" " active_file:%lukB" " inactive_file:%lukB" +#ifdef CONFIG_NORECLAIM + " noreclaim:%lukB" +#endif " present:%lukB" " pages_scanned:%lu" " all_unreclaimable? %s" @@ -1944,6 +1955,9 @@ void show_free_areas(void) K(zone_page_state(zone, NR_INACTIVE_ANON)), K(zone_page_state(zone, NR_ACTIVE_FILE)), K(zone_page_state(zone, NR_INACTIVE_FILE)), +#ifdef CONFIG_NORECLAIM + K(zone_page_state(zone, NR_NORECLAIM)), +#endif K(zone->present_pages), zone->pages_scanned, (zone_is_all_unreclaimable(zone) ? "yes" : "no") Index: linux-2.6.25-rc2-mm1/mm/vmstat.c =================================================================== --- linux-2.6.25-rc2-mm1.orig/mm/vmstat.c 2008-02-28 00:29:35.000000000 -0500 +++ linux-2.6.25-rc2-mm1/mm/vmstat.c 2008-02-28 12:47:36.000000000 -0500 @@ -690,6 +690,9 @@ static const char * const vmstat_text[] "nr_active_anon", "nr_inactive_file", "nr_active_file", +#ifdef CONFIG_NORECLAIM + "nr_noreclaim", +#endif "nr_anon_pages", "nr_mapped", "nr_file_pages", Index: linux-2.6.25-rc2-mm1/drivers/base/node.c =================================================================== --- linux-2.6.25-rc2-mm1.orig/drivers/base/node.c 2008-02-28 00:27:06.000000000 -0500 +++ linux-2.6.25-rc2-mm1/drivers/base/node.c 2008-02-28 12:47:36.000000000 -0500 @@ -52,6 +52,9 @@ static ssize_t node_read_meminfo(struct "Node %d Inactive(anon): %8lu kB\n" "Node %d Active(file): %8lu kB\n" "Node %d Inactive(file): %8lu kB\n" +#ifdef CONFIG_NORECLAIM + "Node %d Noreclaim: %8lu kB\n" +#endif #ifdef CONFIG_HIGHMEM "Node %d HighTotal: %8lu kB\n" "Node %d HighFree: %8lu kB\n" @@ -76,6 +79,9 @@ static ssize_t node_read_meminfo(struct nid, node_page_state(nid, NR_INACTIVE_ANON), nid, node_page_state(nid, NR_ACTIVE_FILE), nid, node_page_state(nid, NR_INACTIVE_FILE), +#ifdef CONFIG_NORECLAIM + nid, node_page_state(nid, NR_NORECLAIM), +#endif #ifdef CONFIG_HIGHMEM nid, K(i.totalhigh), nid, K(i.freehigh), Index: linux-2.6.25-rc2-mm1/fs/proc/proc_misc.c =================================================================== --- linux-2.6.25-rc2-mm1.orig/fs/proc/proc_misc.c 2008-02-28 00:27:06.000000000 -0500 +++ linux-2.6.25-rc2-mm1/fs/proc/proc_misc.c 2008-02-28 12:47:36.000000000 -0500 @@ -162,6 +162,9 @@ static int meminfo_read_proc(char *page, "Inactive(anon): %8lu kB\n" "Active(file): %8lu kB\n" "Inactive(file): %8lu kB\n" +#ifdef CONFIG_NORECLAIM + "Noreclaim: %8lu kB\n" +#endif #ifdef CONFIG_HIGHMEM "HighTotal: %8lu kB\n" "HighFree: %8lu kB\n" @@ -194,6 +197,9 @@ static int meminfo_read_proc(char *page, K(global_page_state(NR_INACTIVE_ANON)), K(global_page_state(NR_ACTIVE_FILE)), K(global_page_state(NR_INACTIVE_FILE)), +#ifdef CONFIG_NORECLAIM + K(global_page_state(NR_NORECLAIM)), +#endif #ifdef CONFIG_HIGHMEM K(i.totalhigh), K(i.freehigh), -- All Rights Reversed