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https://github.com/snapotter-hq/SnapOtter.git
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38 lines
1.4 KiB
Bash
38 lines
1.4 KiB
Bash
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#!/usr/bin/env bash
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# Container resource readings shared by the benchmark scripts.
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#
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# `docker stats` prints MemUsage with a unit ("512MiB / 6GiB", "1.68GiB / 6GiB").
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# Stripping the unit and calling the number MB reports a 1.68 GiB container as
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# 1.68 MB, which is exactly how a memory leak hides inside a green benchmark row.
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# Memory used by a container, in MiB. Emits 0 when the reference is empty or
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# `docker stats` produces nothing, so a caller can always treat it as a number.
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docker_mem_mb() {
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local ref="$1"
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if [ -z "$ref" ]; then echo "0"; return; fi
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docker stats "$ref" --no-stream --format "{{.MemUsage}}" 2>/dev/null \
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| awk -F/ '{
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value = $1
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unit = "MiB"
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if (match(value, /[KMGT]i?B/)) unit = substr(value, RSTART, RLENGTH)
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gsub(/[^0-9.]/, "", value)
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if (value + 0 <= 0) { print 0; exit }
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factor = 1
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if (unit ~ /^G/) factor = 1024
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else if (unit ~ /^T/) factor = 1048576
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else if (unit ~ /^K/) factor = 1 / 1024
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else if (unit ~ /^B/) factor = 1 / 1048576
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printf "%.2f\n", value * factor
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}' \
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| { read -r reading || reading=""; echo "${reading:-0}"; }
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}
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# CPU percentage for a container as a bare number.
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docker_cpu_pct() {
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local ref="$1"
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if [ -z "$ref" ]; then echo "0"; return; fi
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docker stats "$ref" --no-stream --format "{{.CPUPerc}}" 2>/dev/null | tr -d '%' \
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| { read -r reading || reading=""; echo "${reading:-0}"; }
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}
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