我有一个Nvidia TX1开发套件，我使用JetPack-L4T-3.1-linux-x64.run（完全安装模式）安装了Ubuntu 16.04。 安装过程基于以下链接： “http://docs.nvidia.com/jetpack-l4t/2_1/content/developertools/mobile/jetpack/jetpack_l4t/2.0/jetpack_l4t_install.htm”
我想测试其应用程序的GPU性能，但因为它的时钟设置为最小值76800000 HZ。我无法从中获得足够的表现。 我已阅读此链接：“Changing the GPU clock rate on a linux like system (Nvidia Jetson TX1)”更改GPU时钟频率的值，但我的Linux发生了权限被拒绝！有没有希望改变这块板上GPU的时钟速度？
值得一提的是，不要使用这条路径来改变时钟频率 /sys/kernel/debug/clock/override.gbus/rate 我有这条道路： /sys/kernel/debug/clk/override.gbus/clk_rate
所以你可以看到我没有任何时钟文件夹或费率文件！我可以在此文件中看到GPU时钟速率的不同选项：/ sys / kernel / debug / clk / gbus / clk_possible_rates
由于
答案 0 :(得分：1)
解决方案是你不应该在那条路上改变时钟。
使用sudo运行以下bash文件。
#!/bin/bash
# Copyright (c) 2015-2017, NVIDIA CORPORATION. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of NVIDIA CORPORATION nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
CONF_FILE=${HOME}/l4t_dfs.conf
RED='\e[0;31m'
GREEN='\e[0;32m'
BLUE='\e[0;34m'
BRED='\e[1;31m'
BGREEN='\e[1;32m'
BBLUE='\e[1;34m'
NC='\e[0m' # No Color
usage()
{
if [ "$1" != "" ]; then
echo -e ${RED}"$1"${NC}
fi
cat >& 2 <<EOF
Maximize jetson performance by setting static max frequency to CPU, GPU and EMC clocks.
Usage:
jetson_clocks.sh [options]
options,
--show display current settings
--store [file] store current settings to a file (default: \${HOME}/l4t_dfs.conf)
--restore [file] restore saved settings from a file (default: \${HOME}/l4t_dfs.conf)
run jetson_clocks.sh without any option to set static max frequency to CPU, GPU and EMC clocks.
EOF
exit 0
}
restore()
{
for conf in `cat "${CONF_FILE}"`; do
file=`echo $conf | cut -f1 -d :`
data=`echo $conf | cut -f2 -d :`
case "${file}" in
/sys/devices/system/cpu/cpu*/online |\
/sys/kernel/debug/clk/override*/state)
if [ `cat $file` -ne $data ]; then
echo "${data}" > "${file}"
fi
;;
/sys/devices/system/cpu/cpu*/cpufreq/scaling_min_freq |\
/sys/kernel/debug/tegra_cpufreq/*_CLUSTER/cc3/enable)
echo "${data}" > "${file}" 2>/dev/null
;;
*)
echo "${data}" > "${file}"
ret=$?
if [ ${ret} -ne 0 ]; then
echo "Error: Failed to restore $file"
fi
;;
esac
done
}
store()
{
for file in $@; do
if [ -e "${file}" ]; then
echo "${file}:`cat ${file}`" >> "${CONF_FILE}"
fi
done
}
do_fan()
{
# Jetson-TK1 CPU fan is always ON.
if [ "${machine}" = "jetson-tk1" ] ; then
return
fi
if [ ! -w /sys/kernel/debug/tegra_fan/target_pwm ]; then
echo "Can't access Fan!"
return
fi
case "${ACTION}" in
show)
echo "Fan: speed=`cat /sys/kernel/debug/tegra_fan/target_pwm`"
;;
store)
store "/sys/kernel/debug/tegra_fan/target_pwm"
;;
*)
FAN_SPEED=255
echo "${FAN_SPEED}" > /sys/kernel/debug/tegra_fan/target_pwm
;;
esac
}
do_clusterswitch()
{
case "${ACTION}" in
show)
if [ -d "/sys/kernel/cluster" ]; then
ACTIVE_CLUSTER=`cat /sys/kernel/cluster/active`
echo "CPU Cluster Switching: Active Cluster ${ACTIVE_CLUSTER}"
else
echo "CPU Cluster Switching: Disabled"
fi
;;
store)
if [ -d "/sys/kernel/cluster" ]; then
store "/sys/kernel/cluster/immediate"
store "/sys/kernel/cluster/force"
store "/sys/kernel/cluster/active"
fi
;;
*)
if [ -d "/sys/kernel/cluster" ]; then
echo 1 > /sys/kernel/cluster/immediate
echo 0 > /sys/kernel/cluster/force
echo G > /sys/kernel/cluster/active
fi
;;
esac
}
do_hotplug()
{
case "${ACTION}" in
show)
echo "Online CPUs: `cat /sys/devices/system/cpu/online`"
;;
store)
for file in /sys/devices/system/cpu/cpu[0-9]/online; do
store "${file}"
done
;;
*)
if [ "${SOCFAMILY}" != "tegra186" ]; then
for file in /sys/devices/system/cpu/cpu*/online; do
if [ `cat $file` -eq 0 ]; then
echo 1 > "${file}"
fi
done
fi
esac
}
do_cpu()
{
FREQ_GOVERNOR="cpufreq/scaling_governor"
CPU_MIN_FREQ="cpufreq/scaling_min_freq"
CPU_MAX_FREQ="cpufreq/scaling_max_freq"
CPU_CUR_FREQ="cpufreq/scaling_cur_freq"
CPU_SET_SPEED="cpufreq/scaling_setspeed"
INTERACTIVE_SETTINGS="/sys/devices/system/cpu/cpufreq/interactive"
SCHEDUTIL_SETTINGS="/sys/devices/system/cpu/cpufreq/schedutil"
case "${ACTION}" in
show)
for folder in /sys/devices/system/cpu/cpu[0-9]; do
CPU=`basename ${folder}`
if [ -e "${folder}/${FREQ_GOVERNOR}" ]; then
echo "$CPU: Gonvernor=`cat ${folder}/${FREQ_GOVERNOR}`" \
"MinFreq=`cat ${folder}/${CPU_MIN_FREQ}`" \
"MaxFreq=`cat ${folder}/${CPU_MAX_FREQ}`" \
"CurrentFreq=`cat ${folder}/${CPU_CUR_FREQ}`"
fi
done
;;
store)
store "/sys/module/qos/parameters/enable"
for file in \
/sys/devices/system/cpu/cpu[0-9]/cpufreq/scaling_min_freq; do
store "${file}"
done
if [ "${SOCFAMILY}" = "tegra186" ]; then
store "/sys/kernel/debug/tegra_cpufreq/M_CLUSTER/cc3/enable"
store "/sys/kernel/debug/tegra_cpufreq/B_CLUSTER/cc3/enable"
fi
;;
*)
echo 0 > /sys/module/qos/parameters/enable
if [ "${SOCFAMILY}" = "tegra186" ]; then
echo 0 > /sys/kernel/debug/tegra_cpufreq/M_CLUSTER/cc3/enable 2>/dev/null
echo 0 > /sys/kernel/debug/tegra_cpufreq/B_CLUSTER/cc3/enable 2>/dev/null
fi
for folder in /sys/devices/system/cpu/cpu[0-9]; do
cat "${folder}/${CPU_MAX_FREQ}" > "${folder}/${CPU_MIN_FREQ}" 2>/dev/null
done
;;
esac
}
do_gpu()
{
case "${SOCFAMILY}" in
tegra186)
GPU_MIN_FREQ="/sys/devices/17000000.gp10b/devfreq/17000000.gp10b/min_freq"
GPU_MAX_FREQ="/sys/devices/17000000.gp10b/devfreq/17000000.gp10b/max_freq"
GPU_CUR_FREQ="/sys/devices/17000000.gp10b/devfreq/17000000.gp10b/cur_freq"
GPU_RAIL_GATE="/sys/devices/17000000.gp10b/railgate_enable"
;;
tegra210)
GPU_MIN_FREQ="/sys/devices/57000000.gpu/devfreq/57000000.gpu/min_freq"
GPU_MAX_FREQ="/sys/devices/57000000.gpu/devfreq/57000000.gpu/max_freq"
GPU_CUR_FREQ="/sys/devices/57000000.gpu/devfreq/57000000.gpu/cur_freq"
GPU_RAIL_GATE="/sys/devices/57000000.gpu/railgate_enable"
;;
*)
echo "Error! unsupported SOC ${SOCFAMILY}"
exit 1;
;;
esac
case "${ACTION}" in
show)
echo "GPU MinFreq=`cat ${GPU_MIN_FREQ}`" \
"MaxFreq=`cat ${GPU_MAX_FREQ}`" \
"CurrentFreq=`cat ${GPU_CUR_FREQ}`"
;;
store)
store "${GPU_MIN_FREQ}"
store "${GPU_RAIL_GATE}"
;;
*)
echo 0 > "${GPU_RAIL_GATE}"
cat "${GPU_MAX_FREQ}" > "${GPU_MIN_FREQ}"
ret=$?
if [ ${ret} -ne 0 ]; then
echo "Error: Failed to max GPU frequency!"
fi
;;
esac
}
do_emc()
{
case "${SOCFAMILY}" in
tegra186)
EMC_ISO_CAP="/sys/kernel/nvpmodel_emc_cap/emc_iso_cap"
EMC_MIN_FREQ="/sys/kernel/debug/bpmp/debug/clk/emc/min_rate"
EMC_MAX_FREQ="/sys/kernel/debug/bpmp/debug/clk/emc/max_rate"
EMC_CUR_FREQ="/sys/kernel/debug/clk/emc/clk_rate"
EMC_UPDATE_FREQ="/sys/kernel/debug/bpmp/debug/clk/emc/rate"
EMC_FREQ_OVERRIDE="/sys/kernel/debug/bpmp/debug/clk/emc/mrq_rate_locked"
;;
tegra210)
EMC_MIN_FREQ="/sys/kernel/debug/tegra_bwmgr/emc_min_rate"
EMC_MAX_FREQ="/sys/kernel/debug/tegra_bwmgr/emc_max_rate"
EMC_CUR_FREQ="/sys/kernel/debug/clk/override.emc/clk_rate"
EMC_UPDATE_FREQ="/sys/kernel/debug/clk/override.emc/clk_update_rate"
EMC_FREQ_OVERRIDE="/sys/kernel/debug/clk/override.emc/clk_state"
;;
*)
echo "Error! unsupported SOC ${SOCFAMILY}"
exit 1;
;;
esac
case "${ACTION}" in
show)
echo "EMC MinFreq=`cat ${EMC_MIN_FREQ}`" \
"MaxFreq=`cat ${EMC_MAX_FREQ}`" \
"CurrentFreq=`cat ${EMC_CUR_FREQ}`" \
"FreqOverride=`cat ${EMC_FREQ_OVERRIDE}`"
;;
store)
store "${EMC_FREQ_OVERRIDE}"
;;
*)
if [ "${SOCFAMILY}" = "tegra186" ]; then
emc_cap=`cat "${EMC_ISO_CAP}"`
if [ "$emc_cap" -eq 0 ]; then
cat "${EMC_MAX_FREQ}" > "${EMC_UPDATE_FREQ}"
else
echo "$emc_cap" > "${EMC_UPDATE_FREQ}"
fi
else
cat "${EMC_MAX_FREQ}" > "${EMC_UPDATE_FREQ}"
fi
echo 1 > "${EMC_FREQ_OVERRIDE}"
;;
esac
}
main ()
{
while [ -n "$1" ]; do
case "$1" in
--show)
echo "SOC family:${SOCFAMILY} Machine:${machine}"
ACTION=show
;;
--store)
[ -n "$2" ] && CONF_FILE=$2
ACTION=store
shift 1
;;
--restore)
[ -n "$2" ] && CONF_FILE=$2
ACTION=restore
shift 1
;;
-h|--help)
usage
exit 0
;;
*)
usage "Unknown option: $1"
exit 1
;;
esac
shift 1
done
[ `whoami` != root ] && \
echo Error: Run this script\($0\) as a root user && exit 1
case $ACTION in
store)
if [ -e "${CONF_FILE}" ]; then
echo "File $CONF_FILE already exists. Can I overwrite it? Y/N:"
read answer
case $answer in
y|Y)
rm -f $CONF_FILE
;;
*)
echo "Error: file $CONF_FILE already exists!"
exit 1
;;
esac
fi
;;
restore)
if [ ! -e "${CONF_FILE}" ]; then
echo "Error: $CONF_FILE file not found !"
exit 1
fi
restore
exit 0
;;
esac
do_hotplug
do_clusterswitch
do_cpu
do_gpu
do_emc
# do_fan
}
if [ -e "/sys/devices/soc0/family" ]; then
SOCFAMILY="`cat /sys/devices/soc0/family`"
if [ -e "/sys/devices/soc0/machine" ]; then
machine=`cat /sys/devices/soc0/machine`
fi
elif [ -e "/proc/device-tree/compatible" ]; then
grep "nvidia,tegra210" /proc/device-tree/compatible &>/dev/null
if [ $? -eq 0 ]; then
SOCFAMILY="tegra210"
else
grep "nvidia,tegra186" /proc/device-tree/compatible &>/dev/null
if [ $? -eq 0 ]; then
SOCFAMILY="tegra186"
fi
fi
if [ -e "/proc/device-tree/model" ]; then
machine="`cat /proc/device-tree/model`"
fi
fi
main $@
exit 0