How to use PsUtil in Python to monitor system status in real time

PSUtil is a cross-platform Python library for retrieving information about running processes and system utilization (CPU, memory, disk, network, sensors).

It is cross-platform and runs on Linux, Windows and macOS.

1. Install the psutil module

First, we need to install the psutil module. You can use the following command to install:

pip install psutil

2. Get system information

Use the psutil.cpu_count() function to get the number of CPUs:

import psutil
print("CPU数量：", psutil.cpu_count(logical=True))

As you can see, we use psutil The .cpu_count() function obtains the number of logical CPUs in the system.

Next, we can use the psutil.cpu_stats() function to obtain CPU statistical information:

import psutil
cpu_stats = psutil.cpu_stats()
print("CPU统计信息：", cpu_stats)

3. Obtain CPU information

Use the psutil.cpu_percent() function to obtain CPU usage:

import psutil
print("CPU使用率：", psutil.cpu_percent(interval=1))

As you can see, we use the psutil.cpu_percent() function to obtain the CPU usage. The interval parameter specifies the time interval in seconds.

Next, we can use the psutil.cpu_times() function to obtain the CPU time information:

import psutil
cpu_times = psutil.cpu_times()
print("CPU时间信息：", cpu_times)

4. Obtain the memory information

Use the psutil.virtual_memory() function to obtain Memory information:

import psutil
memory = psutil.virtual_memory()
print("内存信息：", memory)

5. Get disk information

Use psutil.disk_partitions() function to get disk partition information:

import psutil
partitions = psutil.disk_partitions()
print("磁盘分区信息：", partitions)

As you can see, we use psutil.disk_partitions( ) function obtains the disk partition information in the system.

Next, we can use the psutil.disk_usage() function to get the disk usage:

import psutil
usage = psutil.disk_usage('/')
print("磁盘使用情况：", usage)

6. Get network information

Use the psutil.net_io_counters() function to get the network Information:

import psutil
net_io_counters = psutil.net_io_counters()
print("网络信息：", net_io_counters)

As you can see, we used the psutil.net_io_counters() function to obtain network information, including the number of bytes sent and received.

7. Obtain sensor information

Use the psutil.sensors_temperatures() function to obtain sensor information:

import psutil
sensors_temperatures = psutil.sensors_temperatures()
print("传感器信息：", sensors_temperatures)

As you can see, we use the psutil.sensors_temperatures() function to obtain the system sensor information.

8. Use psutil for process management

Use the psutil.process_iter() function to obtain the running process:

import psutil
for process in psutil.process_iter():
    print(process.name())

As you can see, we use psutil.process_iter() The function gets the running process.

We can use various properties of the process object to obtain detailed information about the process.

Use psutil.Process() function to obtain detailed information of a specific process:

import psutil
process_id = 1234
process = psutil.Process(process_id)
print(process.name())
print(process.cpu_percent(interval=1))
print(process.memory_info().rss)

9. Use psutil for system monitoring

Use psutil to implement a simple system monitoring program:

import time
import psutil
while True:
    cpu_usage = psutil.cpu_percent(interval=1)
    memory_usage = psutil.virtual_memory().percent
    disk_usage = psutil.disk_usage('/').percent
    network_usage = psutil.net_io_counters().bytes_sent + psutil.net_io_counters().bytes_recv
    print("CPU使用率：", cpu_usage)
    print("内存使用率：", memory_usage)
    print("磁盘使用率：", disk_usage)
    print("网络使用量：", network_usage)
    time.sleep(1)

As you can see, we use psutil to implement a simple system monitoring program that can monitor CPU, memory, disk and network usage in real time.

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