ffrn-lowmem

#!/bin/sh

# only do something if less than 40megs of RAM
RAMSIZE=`grep MemTotal /proc/meminfo | awk '{print $2}'`
if [ $RAMSIZE -le 40000 ] ; then
    
     # start haveged in config mode
     MODE=`uci get gluon-setup-mode.@setup_mode[0].enabled`
     if [ $MODE == "1" ] ; then
     	/etc/init.d/haveged start
     fi
     
    # disable and stop haveged if enabled
    if [ -f /etc/rc.d/S13haveged ] ; then 
        /etc/init.d/haveged disable
	/etc/init.d/haveged stop
    fi

    # tweak some sysctls
    /sbin/sysctl -w net.ipv6.neigh.default.gc_interval=60
    /sbin/sysctl -w net.ipv6.neigh.default.gc_stale_time=120
    /sbin/sysctl -w net.ipv6.neigh.default.gc_thresh1=64
    /sbin/sysctl -w net.ipv6.neigh.default.gc_thresh2=128
    /sbin/sysctl -w net.ipv6.neigh.default.gc_thresh3=512
    /sbin/sysctl -w net.ipv4.neigh.default.gc_interval=60
    /sbin/sysctl -w net.ipv4.neigh.default.gc_stale_time=120
    /sbin/sysctl -w net.ipv4.neigh.default.gc_thresh1=64
    /sbin/sysctl -w net.ipv4.neigh.default.gc_thresh2=128
    /sbin/sysctl -w net.ipv4.neigh.default.gc_thresh3=512
    /sbin/sysctl -w vm.min_free_kbytes=1024
    /sbin/sysctl -w vm.dirty_background_ratio=5
    /sbin/sysctl -w vm.dirty_ratio=30
    /sbin/sysctl -w vm.dirty_expire_centisecs=0
fi