perf, iotop, and ltrace are third-party tools. The installation methods provided below are for reference only. You should adapt them according to actual environments.

For Ubuntu 20.04, run the following commands:
- Method for installing the iotop tool:
```
apt-get install iotop
```
- Method for installing the perf tool:
```
apt-get install linux-tools-common
```
  After the installation is complete, run the perf command. Then run the apt-get install commands to install linux-tools-x and linux-cloud-x as prompted.
- Method for installing the ltrace tool:
```
apt-get install ltrace
```
The installation command applies to Ubuntu 18.04.
- Method for installing the iotop tool:
  Python 3 is used as an example. If you use another Python version, adapt it as required.
```
wget http://guichaz.free.fr/iotop/files/iotop-0.6.tar.bz2
tar -xvf iotop-0.6.tar.bz2
cd iotop-0.6
sed -i 's/itervalues/values/g' setup.py
python3 setup.py build
python3 setup.py install
ln -s /usr/local/python3/sbin/iotop /usr/sbin/iotop
ln -s /usr/local/python3/bin/iotop /usr/bin/iotop
```
- Method for installing the perf tool:
```
apt-get install linux-tools-common
```
  After the installation is complete, run the perf command. Then run the apt-get install commands to install linux-tools-x and linux-cloud-x as prompted.
- Method for installing the ltrace tool:
```
apt-get install ltrace
```
For CentOS 7.6, EulerOS, openEuler 20.03, openEuler 22.03, and Kylin V10 SP1 of the x86_64 architecture, run the following command:
```
yum install perf iotop ltrace
```

For Kylin V10 SP1 of the ARM architecture, you only need to install the iotop tool with the following command:
```
yum install iotop
```

The root user is used as an example to run the preceding commands. For a non-root user, add sudo before each command line.
The iotop tool cannot be used in containers.
After installing the perf, iotop, and ltrace tools, perform operations in Configuring User Permissions.

Installing perf, iotop, and ltrace