Created
August 23, 2024 06:37
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A prototype of task spooler which avoids OOM
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| #!/bin/bash | |
| set -xeu | |
| export max=$((8*1024*1024*1024)) # 8 GB | |
| memory_max() { | |
| requested=$1 | |
| total=$( | |
| find /sys/fs/cgroup/user.slice/ -wholename "*/run-*.*/cgroup.procs" | | |
| datamash dirname 1 | | |
| xargs -I% cat %/memory.max | | |
| datamash sum 1 | |
| ) | |
| if [ $((total+requested)) -gt $max ] | |
| then | |
| exit 1 | |
| else | |
| exit 0 | |
| fi | |
| } | |
| export -f memory_max | |
| stresser() { | |
| size=$((RANDOM%5+1)) | |
| echo | parallel -n0 --limit "memory_max $((size*1024*1024*1024))" -- \ | |
| systemd-run --user --scope --quiet \ | |
| -p MemoryMax=$((size+1))G \ | |
| -p MemorySwapMax=0 \ | |
| --setenv=size=$size -- \ | |
| stress-ng \ | |
| --minimize \ | |
| --timeout $((RANDOM%60+1))s \ | |
| --oomable --no-oom-adjust \ | |
| --memfd 1 --memfd-bytes ${size}G | |
| } | |
| export -f stresser | |
| parallel -n0 --delay 1 --bar -- stresser ::: {1..10} |
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