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From: Rik van Riel <riel@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
	linux-mm@kvack.org
Subject: [patch 09/21] (NEW) improve reclaim balancing
Date: Thu, 28 Feb 2008 14:29:17 -0500	[thread overview]
Message-ID: <20080228192928.648701083@redhat.com> (raw)
In-Reply-To: <20080228192908.126720629@redhat.com>

[-- Attachment #1: rvr-05-linux-2.6-limit-direct-reclaim.patch --]
[-- Type: text/plain, Size: 1229 bytes --]

- deactivate anonymous pages regardless of the scan ratio
- go through the reclaim loop at least once for the deactivation
- break out of the reclaim loop if we freed sc->swap_cluster_max pages,
  on big systems the nr[FOO] targets can get ridiculously large

Signed-off-by: Rik van Riel <riel@redhat.com>

Index: linux-2.6.25-rc2-mm1/mm/vmscan.c
===================================================================
--- linux-2.6.25-rc2-mm1.orig/mm/vmscan.c	2008-02-28 00:29:40.000000000 -0500
+++ linux-2.6.25-rc2-mm1/mm/vmscan.c	2008-02-28 00:29:46.000000000 -0500
@@ -1302,7 +1302,7 @@ static unsigned long shrink_zone(int pri
 	}
 
 	while (nr[LRU_INACTIVE_ANON] || nr[LRU_ACTIVE_FILE] ||
-						 nr[LRU_INACTIVE_FILE]) {
+					nr[LRU_INACTIVE_FILE]) {
 		for_each_lru(l) {
 			if (nr[l]) {
 				nr_to_scan = min(nr[l],
@@ -1315,6 +1315,14 @@ static unsigned long shrink_zone(int pri
 		}
 	}
 
+	/*
+	 * Even if we did not try to evict anon pages at all, we want to
+	 * rebalance the anon lru active/inactive ratio.
+	 */
+	if (inactive_anon_low(zone))
+		shrink_list(NR_ACTIVE_ANON, SWAP_CLUSTER_MAX, zone, sc,
+								priority);
+
 	throttle_vm_writeout(sc->gfp_mask);
 	return nr_reclaimed;
 }

-- 
All Rights Reversed


  parent reply	other threads:[~2008-02-28 19:45 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-28 19:29 [patch 00/21] VM pageout scalability improvements Rik van Riel
2008-02-28 19:29 ` [patch 01/21] move isolate_lru_page() to vmscan.c Rik van Riel
2008-02-29  2:29   ` KOSAKI Motohiro
2008-02-29  2:41     ` Rik van Riel
2008-02-29  2:47       ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 02/21] Use an indexed array for LRU variables Rik van Riel
2008-02-29 16:03   ` Andy Whitcroft
2008-03-03 18:57     ` Rik van Riel
2008-02-28 19:29 ` [patch 03/21] use an array for the LRU pagevecs Rik van Riel
2008-02-29 15:40   ` Andy Whitcroft
2008-03-01  7:02     ` KOSAKI Motohiro
2008-03-04 11:04       ` KOSAKI Motohiro
2008-03-04 20:38         ` Rik van Riel
2008-03-05  1:38           ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 04/21] free swap space on swap-in/activation Rik van Riel
2008-02-28 20:05   ` Lee Schermerhorn
2008-02-28 20:20     ` Rik van Riel
2008-02-28 19:29 ` [patch 05/21] define page_file_cache() function Rik van Riel
2008-02-29 11:53   ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 06/21] split LRU lists into anon & file sets Rik van Riel
2008-03-01 12:13   ` KOSAKI Motohiro
2008-03-01 12:46   ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 07/21] SEQ replacement for anonymous pages Rik van Riel
2008-03-03 10:50   ` barrioskmc@gmail
2008-02-28 19:29 ` [patch 08/21] (NEW) add some sanity checks to get_scan_ratio Rik van Riel
2008-03-04 10:40   ` minchan Kim
2008-02-28 19:29 ` Rik van Riel [this message]
2008-03-01 13:35   ` [patch 09/21] (NEW) improve reclaim balancing KOSAKI Motohiro
2008-03-03 19:26     ` Rik van Riel
2008-02-28 19:29 ` [patch 10/21] add newly swapped in pages to the inactive list Rik van Riel
2008-02-28 19:29 ` [patch 11/21] (NEW) more aggressively use lumpy reclaim Rik van Riel
2008-03-02 10:35   ` KOSAKI Motohiro
2008-03-02 14:23     ` Rik van Riel
2008-02-28 19:29 ` [patch 12/21] No Reclaim LRU Infrastructure Rik van Riel
     [not found]   ` <44c63dc40802282058h67f7597bvb614575f06c62e2c@mail.gmail.com>
2008-02-29 14:48     ` Lee Schermerhorn
     [not found]       ` <44c63dc40803021904n5de681datba400e08079c152d@mail.gmail.com>
2008-03-03  3:06         ` minchan Kim
2008-03-03 18:46         ` Rik van Riel
2008-03-03 23:38           ` barrioskmc@gmail
2008-03-04  1:55             ` Rik van Riel
2008-03-04 10:46   ` KOSAKI Motohiro
2008-03-04 15:05     ` Lee Schermerhorn
2008-03-04 21:21       ` Rik van Riel
2008-03-05  1:42       ` KOSAKI Motohiro
2008-02-28 19:29 ` [patch 13/21] Non-reclaimable page statistics Rik van Riel
2008-02-28 19:29 ` [patch 14/21] scan noreclaim list for reclaimable pages Rik van Riel
2008-02-28 23:41   ` Randy Dunlap
2008-02-29 14:38     ` Lee Schermerhorn
2008-02-28 19:29 ` [patch 15/21] ramfs pages are non-reclaimable Rik van Riel
2008-02-28 19:29 ` [patch 16/21] SHM_LOCKED pages are nonreclaimable Rik van Riel
2008-02-28 19:29 ` [patch 17/21] non-reclaimable mlocked pages Rik van Riel
     [not found]   ` <44c63dc40802282055q508af6ccsb0e8ac3fb5e67d24@mail.gmail.com>
2008-02-29 14:47     ` Lee Schermerhorn
2008-02-28 19:29 ` [patch 18/21] mlock vma pages under mmap_sem held for read Rik van Riel
2008-02-28 19:29 ` [patch 19/21] handle mlocked pages during map/unmap and truncate Rik van Riel
2008-02-28 19:29 ` [patch 20/21] account mlocked pages Rik van Riel
2008-02-28 19:29 ` [patch 21/21] cull non-reclaimable anon pages from the LRU at fault time Rik van Riel
2008-02-28 20:19   ` Lee Schermerhorn
2008-02-28 22:27     ` Rik van Riel
2008-02-28 19:49 ` [patch 00/21] VM pageout scalability improvements Rik van Riel
2008-02-28 20:14 ` John Stoffel
2008-02-28 20:23   ` Rik van Riel

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