PTE pages eat up memory just like anything else, but we do not account for them in any way in the OOM scores. They are also _guaranteed_ to get freed up when a process is OOM killed, while RSS is not. Signed-off-by: Dave Hansen <dave@xxxxxxxxxxxxxxxxxx> --- linux-2.6.git-dave/mm/oom_kill.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff -puN mm/oom_kill.c~use-pte-pages-in-oom-scire mm/oom_kill.c --- linux-2.6.git/mm/oom_kill.c~use-pte-pages-in-oom-scire 2011-04-15 10:37:13.184831585 -0700 +++ linux-2.6.git-dave/mm/oom_kill.c 2011-04-15 10:37:13.192831581 -0700 @@ -192,8 +192,10 @@ unsigned int oom_badness(struct task_str * The baseline for the badness score is the proportion of RAM that each * task's rss and swap space use. */ - points = (get_mm_rss(p->mm) + get_mm_counter(p->mm, MM_SWAPENTS)) * 1000 / - totalpages; + points = (get_mm_rss(p->mm) + + get_mm_counter(p->mm, MM_SWAPENTS) + + get_mm_counter(p->mm, MM_PTEPAGES)) + * 1000 / totalpages; task_unlock(p); /* _ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>