Disable turbo during testsHEADmaster

1 files changed, 15 insertions, 1 deletions

diff --git a/run.sh b/run.sh
index dfe5fb9..39c4719 100755
--- a/run.sh
+++ b/run.sh
@@ -8,9 +8,23 @@ nob_cpus() {
 	done
 }
 
+noturbo() {
+	echo "[+] Setting no-turbo to status $1"
+	if [[ -e /sys/devices/system/cpu/intel_pstate/no_turbo ]]; then
+		echo "$1" > /sys/devices/system/cpu/intel_pstate/no_turbo
+	else
+		local val
+		[[ $1 == 0 ]] && val=0x850089
+		[[ $1 == 1 ]] && val=0x4000850089
+		[[ -n $val ]] || return 0
+		wrmsr -a 0x1a0 $val
+	fi
+}
+
 [[ -e kbench9000.ko ]]
 
-trap "nob_cpus 1" INT TERM EXIT
+trap "nob_cpus 1; noturbo 0;" INT TERM EXIT
+noturbo 1
 nob_cpus 0
 
 echo "[+] Inserting module to run tests"