/usr/local/lp/bin/telegraf-scripts/ Current File: //usr/local/lp/bin/telegraf-scripts/numa-monitor

#!/bin/bash

# get the min and max online numa node
read -r minNode maxNode < <(tr '-' ' ' </sys/devices/system/node/online)

# for each numa node
for ((node = minNode; node <= maxNode; node++)); do

	# capture info on that node
	nodeData=$(cat "/sys/devices/system/node/node${node}/meminfo")
	total=$(awk '$3 == "MemTotal:" {print $4}' <<<"${nodeData}")
	free=$(awk '$3 == "MemFree:" {print $4}' <<<"${nodeData}")
	used=$(awk '$3 == "MemUsed:" {print $4}' <<<"${nodeData}")

	# calculate percentage of used memory
	percent=$(awk '{print 100 * $1 / $2}' <<<"${used} ${total}")

	# print the formatted row for this node
	# shellcheck disable=SC2046,SC2183
	printf 'numactl,node=%s size=%s,free=%s,used=%s,used_percent=%s\n' \
		"${node}" "${total}" "${free}" "${used}" "${percent}"
done