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21 lines
617 B
21 lines
617 B
3 years ago
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#!/bin/bash
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# DISCLAIMER:
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# Script taken from http://askubuntu.com/questions/201937/ubuntu-detect-4-cpus-and-i-have-only-2-cpus
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echo "Disabling hyperthreading..."
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CPUS_TO_SKIP=" $(cat /sys/devices/system/cpu/cpu*/topology/thread_siblings_list | sed 's/[^0-9].*//' | sort | uniq | tr "\r\n" " ") "
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# Disable Hyperthreading
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for CPU_PATH in /sys/devices/system/cpu/cpu[0-9]*; do
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CPU="$(echo $CPU_PATH | tr -cd "0-9")"
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echo "$CPUS_TO_SKIP" | grep " $CPU " > /dev/null
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if [ $? -ne 0 ]; then
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echo 0 > $CPU_PATH/online
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fi
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done
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lscpu | grep -i -E "^CPU\(s\):|core|socket"
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