52 lines
1.1 KiB
Bash
52 lines
1.1 KiB
Bash
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#!/bin/sh
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# stolen from https://github.com/DropD/fnc-simplex/blob/master/linux_turboboost.sh
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# you might need to run sudo apt-get install msr-tools
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# Toggle Turbo Boost for Ivy Bridge CPUs (should work for all newer Core)
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# Requires a fairly new Linux kernel (let's say 3.0+)
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# Written by Donjan Rodic, released for free use
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# check current real frequency with sudo turbostat -s -i1
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sudo modprobe msr
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# all_cores FOO
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# perform FOO(i) for each core i
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all_cores() {
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NPROCS=`cat /proc/cpuinfo | grep "core id" | wc -l`
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NPROCS=$(($NPROCS - 1))
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for i in `seq 0 1 $NPROCS`; do
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$1 $i
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done
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}
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# report Turbo Boost state on core $1
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read_tb() {
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ret=`sudo rdmsr -p"$1" 0x1a0 -f 38:38`
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[ $ret -eq 0 ] && echo "$1": on || echo "$1": off
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}
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# enable Turbo Boost on core $1
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enable_tb() {
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sudo wrmsr -p"$1" 0x1a0 0x850089
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}
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# disable Turbo Boost on core $1
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disable_tb() {
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sudo wrmsr -p"$1" 0x1a0 0x4000850089
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}
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if [ "$1" = "on" ]; then
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all_cores enable_tb
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all_cores read_tb
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elif [ "$1" = "off" ]; then
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all_cores disable_tb
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all_cores read_tb
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elif [ "$1" = "list" ]; then
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all_cores read_tb
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else
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echo "usage: turboboost.sh on | off | list"
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fi
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