OpenVZ lower memory utilization

openvz_lowmem.sh

# OpenVZ lower memory utilization, according to
# http://wiki.openvz.org/UBC_systemwide_configuration#.E2.80.9CLow_memory.E2.80.9D_.28x86_32_specific.29
#

# AWK script to calculate lower memory utilization
lowmem() {
    awk '$1 ~ /kmemsize|tcprcvbuf|tcpsndbuf|dgramrcvbuf|othersockbuf/ { M+=$2 } END { print M  / (0.4 * 832 * 1024 * 1024 ) }' $*
}

# Reading user bean counters, low mem usage is: 0.137789
lowmem /proc/user_beancounters


# Reading all resources files in /proc/bc, low mem usage is: 0.372573
lowmem /proc/bc/*/resources

# Only counting running containers, low mem usage is: 0.288026
lowmem /proc/bc/{101..108}/resources