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Commit 06787f40 authored by Dianne Hackborn's avatar Dianne Hackborn
Browse files

Activity Manager now takes care of setting OOM values. 

All init needs to do is make these files writeable so that the
activity manager can set them.

Change-Id: Ieea43208fadc01504d813be379aecbafcadf0d34
parent 0842f08b

rootdir/init.lowmem.rc

deleted100644 → 0
+0 −19
Original line number Diff line number Diff line 
# Adjustments to the out-of-memory killer, for devices that are

# tight on memory.  These should not be used if not needed, as they

# can result in more paging.



on early-boot



    setprop ro.FOREGROUND_APP_MEM 1536

    setprop ro.VISIBLE_APP_MEM 2048

    setprop ro.PERCEPTIBLE_APP_MEM 2048

    setprop ro.HEAVY_WEIGHT_APP_MEM 2048

    setprop ro.SECONDARY_SERVER_MEM 4096

    setprop ro.BACKUP_APP_MEM 4096

    setprop ro.HOME_APP_MEM 4096

    setprop ro.HIDDEN_APP_MEM 5120

    setprop ro.EMPTY_APP_MEM 6144



on boot



    write /sys/module/lowmemorykiller/parameters/minfree 1536,2048,3072,4096,5120,6144

rootdir/init.rc

+8 −45
Original line number Diff line number Diff line
@@ -190,54 +190,17 @@ on boot 
# set RLIMIT_NICE to allow priorities from 19 to -20

    setrlimit 13 40 40



# Define the oom_adj values for the classes of processes that can be

# killed by the kernel.  These are used in ActivityManagerService.

    setprop ro.FOREGROUND_APP_ADJ 0

    setprop ro.VISIBLE_APP_ADJ 1

    setprop ro.PERCEPTIBLE_APP_ADJ 2

    setprop ro.HEAVY_WEIGHT_APP_ADJ 3

    setprop ro.SECONDARY_SERVER_ADJ 4

    setprop ro.BACKUP_APP_ADJ 5

    setprop ro.HOME_APP_ADJ 6

    setprop ro.HIDDEN_APP_MIN_ADJ 7

    setprop ro.EMPTY_APP_ADJ 15



# Define the memory thresholds at which the above process classes will

# be killed.  These numbers are in pages (4k).

    # These are currently tuned for tablets with approx 1GB RAM.

    setprop ro.FOREGROUND_APP_MEM 8192

    setprop ro.VISIBLE_APP_MEM 10240

    setprop ro.PERCEPTIBLE_APP_MEM 12288

    setprop ro.HEAVY_WEIGHT_APP_MEM 12288

    setprop ro.SECONDARY_SERVER_MEM 14336

    setprop ro.BACKUP_APP_MEM 14336

    setprop ro.HOME_APP_MEM 14336

    setprop ro.HIDDEN_APP_MEM 16384

    setprop ro.EMPTY_APP_MEM 20480



    # Old values for phones.  Should probably be adjusted up for the next

    # phone version.

    #setprop ro.FOREGROUND_APP_MEM 2048

    #setprop ro.VISIBLE_APP_MEM 3072

    #setprop ro.PERCEPTIBLE_APP_MEM 4096

    #setprop ro.HEAVY_WEIGHT_APP_MEM 4096

    #setprop ro.SECONDARY_SERVER_MEM 6144

    #setprop ro.BACKUP_APP_MEM 6144

    #setprop ro.HOME_APP_MEM 6144

    #setprop ro.HIDDEN_APP_MEM 7168

    #setprop ro.EMPTY_APP_MEM 8192



# Write value must be consistent with the above properties.

# Note that the driver only supports 6 slots, so we have combined some of

# the classes into the same memory level; the associated processes of higher

# classes will still be killed first.

    write /sys/module/lowmemorykiller/parameters/adj 0,1,2,4,7,15



# Memory management.  Basic kernel parameters, and allow the high

# level system server to be able to adjust the kernel OOM driver

# paramters to match how it is managing things.

    write /proc/sys/vm/overcommit_memory 1

    write /proc/sys/vm/min_free_order_shift 4

    write /sys/module/lowmemorykiller/parameters/minfree 8192,10240,12288,14336,16384,20480

    chown root system /sys/module/lowmemorykiller/parameters/adj

    chmod 0664 /sys/module/lowmemorykiller/parameters/adj

    chown root system /sys/module/lowmemorykiller/parameters/minfree

    chmod 0664 /sys/module/lowmemorykiller/parameters/minfree



    # Set init its forked children's oom_adj.

    # Set init and its forked children's oom_adj.

    write /proc/1/oom_adj -16



    # Tweak background writeout