psutil is a cross-platform Python library that allows you to obtain information about system processes and system resource usage. It supports operating systems such as Windows, Linux, OS , disk usage and other information.
Get the process list, process status, process CPU usage, process memory usage, process IO information, etc.
Kill the process, send a signal to the process, suspend the process, resume the process and other operations.
Using psutil, you can easily monitor the running status of the system, diagnose problems and optimize performance. Here is a simple example demonstrating how to use psutil to get system CPU usage and memory usage:
import psutil # 获取磁盘使用率(windows),linux服务器可以获取根目录/下的磁盘使用率 disk_usage_C = psutil.disk_usage('/') #disk_usage()方法可以获取指定路径的磁盘使用情况,返回一个namedtuple对象,包含total、used、free、percent四个属性,分别表示总容量、已用容量、可用容量和使用率。 disk_usage_C = psutil.disk_usage('C:') print("C磁盘总体情况: ","总容量:",round(disk_usage_C.total/1073741824,2),"G"," 磁盘使用率:",disk_usage_C.percent, "%",sep='') # sep='' 去除print()内空格,round(数值,2):保留两位小数 ,1G等于1,073,741,824byte disk_usage_D = psutil.disk_usage('D:') print("D磁盘使用率:","总容量:",round(disk_usage_D.total/1073741824,2),"G"," 磁盘使用率:",disk_usage_D.percent, "%",sep='') disk_usage_E = psutil.disk_usage('E:') print("E磁盘使用率:","总容量:",round(disk_usage_E.total/1099511627776,1),"T"," 磁盘使用率:",disk_usage_E.percent, "%",sep='') # 获取内存使用率 #virtual_memory()方法可以获取系统内存使用情况,返回一个namedtuple对象,包含total、available、percent、used、free五个属性,分别表示总内存、可用内存、使用率、已用内存和可用内存。 mem = psutil.virtual_memory() print("内存总量: ",round(mem.total/1073741824,2),"内存使用率:", mem.percent, "%") # 获取CPU使用率 #cpu_percent()方法可以获取CPU使用率,可以指定采样间隔(默认为1秒),返回一个浮点数,表示CPU使用率 cpu_percent = psutil.cpu_percent(interval=1) print("cpu核数: ",psutil.cpu_count(),"CPU使用率:", cpu_percent, "%")
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