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authorChristoph Lameter <clameter@sgi.com>2006-06-30 04:55:37 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-30 14:25:35 -0400
commit34aa1330f9b3c5783d269851d467326525207422 (patch)
treea47db4fa53527ea937dee9e763267ab21865ce11 /Documentation/sysctl
parentf3dbd34460ff54962d3e3244b6bcb7f5295356e6 (diff)
[PATCH] zoned vm counters: zone_reclaim: remove /proc/sys/vm/zone_reclaim_interval
The zone_reclaim_interval was necessary because we were not able to determine how many unmapped pages exist in a zone. Therefore we had to scan in intervals to figure out if any pages were unmapped. With the zoned counters and NR_ANON_PAGES we now know the number of pagecache pages and the number of mapped pages in a zone. So we can simply skip the reclaim if there is an insufficient number of unmapped pages. We use SWAP_CLUSTER_MAX as the boundary. Drop all support for /proc/sys/vm/zone_reclaim_interval. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/sysctl')
-rw-r--r--Documentation/sysctl/vm.txt13
1 files changed, 0 insertions, 13 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index 2dc246af4885..86754eb390da 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -28,7 +28,6 @@ Currently, these files are in /proc/sys/vm:
28- block_dump 28- block_dump
29- drop-caches 29- drop-caches
30- zone_reclaim_mode 30- zone_reclaim_mode
31- zone_reclaim_interval
32- panic_on_oom 31- panic_on_oom
33 32
34============================================================== 33==============================================================
@@ -167,18 +166,6 @@ use of files and builds up large slab caches. However, the slab
167shrink operation is global, may take a long time and free slabs 166shrink operation is global, may take a long time and free slabs
168in all nodes of the system. 167in all nodes of the system.
169 168
170================================================================
171
172zone_reclaim_interval:
173
174The time allowed for off node allocations after zone reclaim
175has failed to reclaim enough pages to allow a local allocation.
176
177Time is set in seconds and set by default to 30 seconds.
178
179Reduce the interval if undesired off node allocations occur. However, too
180frequent scans will have a negative impact onoff node allocation performance.
181
182============================================================= 169=============================================================
183 170
184panic_on_oom 171panic_on_oom