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Staging: android: Add lowmemorykiller documentation.

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Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Arve Hjønnevåg 2009-01-14 16:54:16 -08:00 committed by Greg Kroah-Hartman
parent 07960058f0
commit 191805ac41
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drivers/staging/android/lowmemorykiller.txt Normal file
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The lowmemorykiller driver lets user-space specify a set of memory thresholds
where processes with a range of oom_adj values will get killed. Specify the
minimum oom_adj values in /sys/module/lowmemorykiller/parameters/adj and the
number of free pages in /sys/module/lowmemorykiller/parameters/minfree. Both
files take a comma separated list of numbers in ascending order.
For example, write "0,8" to /sys/module/lowmemorykiller/parameters/adj and
"1024,4096" to /sys/module/lowmemorykiller/parameters/minfree to kill processes
with a oom_adj value of 8 or higher when the free memory drops below 4096 pages
and kill processes with a oom_adj value of 0 or higher when the free memory
drops below 1024 pages.
The driver considers memory used for caches to be free, but if a large
percentage of the cached memory is locked this can be very inaccurate
and processes may not get killed until the normal oom killer is triggered.