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75 lines
2.4 KiB
Bash
Executable File
75 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-FileCopyrightText: 2020 Citadel and contributors
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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CITADEL_ROOT="$(readlink -f $(dirname "${BASH_SOURCE[0]}")/..)"
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# Fail if not running as root
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if [[ $EUID -ne 0 ]]; then
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echo "This script must be run as root" 1>&2
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exit 1
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fi
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# Get the memory usage of a docker container by name
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function get_memory_usage() {
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docker stats --no-stream --format "{{.MemPerc}}" "$1" | sed "s/%//"
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}
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# Convert a memory usage in MiB to the percentage of the total memory
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# With two decimal places
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function mem_usage_to_percent() {
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local mem_usage="$1"
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local total_mem="$(free -m | awk 'NR==2 {print $2}')"
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echo "$(awk "BEGIN {printf \"%.1f\", ${mem_usage/,/.} / ${total_mem/,/.} * 100}")"
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}
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function app_mem_usage() {
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# For every container of the app, get the mem usage, save it, and at the end, print the total mem usage of the app
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local mem_usage=0
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for container in $(get_app_containers "$1"); do
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# Use awk to add, it supports floating point numbers
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mem_usage=$(awk "BEGIN {printf \"%.2f\", $mem_usage + $(get_memory_usage "$container")}")
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done
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echo "${1}: $mem_usage%"
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}
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get_total_used_mem_raw() {
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free -m | awk 'NR==2 {print $3}'
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}
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get_total_used_mem() {
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echo "$(mem_usage_to_percent "$(get_total_used_mem_raw)")"
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}
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# To get the containers of the app, list every container whose name starts with the name of the app
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get_app_containers () {
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local app_name="$1"
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"${CITADEL_ROOT}/scripts/app" compose "${app_name}" ps | awk '{print $1}' | grep -v 'NAME'
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}
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# Get the memory usage of the whole system, excluding docker containers
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get_system_memory_usage() {
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local docker_usage_all="$(docker stats --no-stream --format "{{.MemUsage}}" | awk '{sum+=$1} END {print sum}')"
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# Now, subtract that from get_total_used_mem_raw, and convert the output to a percentage
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local total_usage="$(get_total_used_mem_raw)"
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local system_usage="$(awk "BEGIN {printf \"%.1f\", $total_usage - $docker_usage_all}")"
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echo "$(mem_usage_to_percent "$system_usage")"
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}
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main() {
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echo "total: $(get_total_used_mem)%"
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echo "system: $(get_system_memory_usage)%"
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for service in bitcoin lightning electrum tor; do
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echo "${service}: $(get_memory_usage "$service")%" &
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done
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for app in $("${CITADEL_ROOT}/scripts/app" ls-installed); do
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app_mem_usage "${app}" &
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done
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wait
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}
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echo "Calculating memory usage..."
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echo "This may take a while, please wait..."
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main | sort --key 2 --numeric-sort --reverse
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