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KVM CPU pinning for Proxmox VE
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#!/bin/bash | |
set -eo pipefail | |
VMID=200 | |
cpu_tasks() { | |
expect <<EOF | sed -n 's/^.* CPU .*thread_id=\(.*\)$/\1/p' | tr -d '\r' || true | |
spawn qm monitor $VMID | |
expect ">" | |
send "info cpus\r" | |
expect ">" | |
EOF | |
} | |
VCPUS=($(cpu_tasks)) | |
VCPU_COUNT="${#VCPUS[@]}" | |
if [[ $VCPU_COUNT -eq 0 ]]; then | |
echo "* No VCPUS for VM$VMID" | |
exit 1 | |
fi | |
echo "* Detected ${#VCPUS[@]} assigned to VM$VMID..." | |
echo "* Resetting cpu shield..." | |
for CPU_INDEX in "${!VCPUS[@]}" | |
do | |
CPU_TASK="${VCPUS[$CPU_INDEX]}" | |
echo "* Assigning $CPU_INDEX to $CPU_TASK..." | |
taskset -pc "$CPU_INDEX" "$CPU_TASK" | |
done |
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