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authorChristoph Lameter <clameter@sgi.com>2006-06-30 01:55:37 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-30 11:25:35 -0700
commit34aa1330f9b3c5783d269851d467326525207422 (patch)
treea47db4fa53527ea937dee9e763267ab21865ce11 /Documentation
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')
-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 2dc246af488..86754eb390d 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -28,7 +28,6 @@ Currently, these files are in /proc/sys/vm:
- block_dump
- drop-caches
- zone_reclaim_mode
-- zone_reclaim_interval
- panic_on_oom
==============================================================
@@ -167,18 +166,6 @@ use of files and builds up large slab caches. However, the slab
shrink operation is global, may take a long time and free slabs
in all nodes of the system.
-================================================================
-
-zone_reclaim_interval:
-
-The time allowed for off node allocations after zone reclaim
-has failed to reclaim enough pages to allow a local allocation.
-
-Time is set in seconds and set by default to 30 seconds.
-
-Reduce the interval if undesired off node allocations occur. However, too
-frequent scans will have a negative impact onoff node allocation performance.
-
=============================================================
panic_on_oom