mirror of
https://github.com/mulgadc/spinifex.git
synced 2026-11-07 19:25:57 +00:00
Ben Duncan
35 lines
1.2 KiB
Bash
Executable File
35 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Usage: wait-for-memory.sh <MiB>
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#
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# Waits until the runner's MemAvailable reaches <MiB>, then returns. Runners on
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# one host share its RAM, and a neighbour's build holds several GiB for a few
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# minutes, so one sample taken during it is not a verdict on the host.
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# Gives up after MEM_WAIT_TIMEOUT_S and names the biggest processes.
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#
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# Env: MEM_WAIT_TIMEOUT_S (900), MEM_WAIT_POLL_S (30), MEMINFO (/proc/meminfo).
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set -uo pipefail
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want_mb="${1:?usage: $0 <MiB>}"
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timeout_s="${MEM_WAIT_TIMEOUT_S:-900}"
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poll_s="${MEM_WAIT_POLL_S:-30}"
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meminfo="${MEMINFO:-/proc/meminfo}"
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avail_mb() { awk '/^MemAvailable:/ {print int($2 / 1024)}' "$meminfo"; }
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start=$SECONDS
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while :; do
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have=$(avail_mb)
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if [ -n "$have" ] && [ "$have" -ge "$want_mb" ]; then
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echo "memory: ${have} MiB available, need ${want_mb} MiB"
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exit 0
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fi
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waited=$(( SECONDS - start ))
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if [ "$waited" -ge "$timeout_s" ]; then
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echo "::error::need ${want_mb} MiB available, have ${have:-unknown} MiB after waiting ${waited}s"
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ps -eo rss,pid,args --sort=-rss | head -11 | cut -c1-200
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exit 1
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fi
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echo "memory: ${have:-unknown} MiB available, need ${want_mb} MiB; waiting (${waited}s of ${timeout_s}s)"
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sleep "$poll_s"
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done
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