diff options
| author | Nick Piggin <npiggin@suse.de> | 2006-09-25 23:31:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 08:48:48 -0700 |
| commit | 4ff1ffb4870b007b86f21e5f27eeb11498c4c077 (patch) | |
| tree | f168408f90214873e1fa36733d29f2ba002fae46 /lib | |
| parent | 408d85441cd5a9bd6bc851d677a10c605ed8db5f (diff) | |
| download | linux-4ff1ffb4870b007b86f21e5f27eeb11498c4c077.tar.gz | |
[PATCH] oom: reclaim_mapped on oom
Potentially it takes several scans of the lru lists before we can even start
reclaiming pages.
mapped pages, with young ptes can take 2 passes on the active list + one on
the inactive list. But reclaim_mapped may not always kick in instantly, so it
could take even more than that.
Raise the threshold for marking a zone as all_unreclaimable from a factor of 4
time the pages in the zone to 6. Introduce a mechanism to force
reclaim_mapped if we've reached a factor 3 and still haven't made progress.
Previously, a customer doing stress testing was able to easily OOM the box
after using only a small fraction of its swap (~100MB). After the patches, it
would only OOM after having used up all swap (~800MB).
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions