small script to get some heap information of a process

heapstat.sh

#!/bin/sh

statusname="/proc/$1/status"
smapsname="/proc/$1/smaps"

echo "===================== $(date +'%s %c') ====================="

awk '
$1 == "MemFree:" { free = $2; next }
$1 == "Cached:"  { cached = $2; next }

END {
    printf "===MEMINFO (free,cached):  %8d  %8d\n", free, cached
}
' /proc/meminfo

awk '
$1 == "VmRSS:" { rss = $2; next }
$1 == "VmHWM:" { hwm = $2; next }

END {
    printf "===STATUS      (rss,hwm):  %8d  %8d\n", rss, hwm
}
' $statusname

awk '
NF == 6 {
    if ($NF == "[heap]") obj = "h"
    else obj = ""
    next
}

NF == 5 { obj = "a"; next }

obj != "" && $1 == "Rss:" {
    rss[obj] += $2
    next
}

END {
    printf "===HEAP      (anon,heap):  %8d  %8d\n", rss["a"], rss["h"]
}
' $smapsname

echo "===END"