【下载文档:  Python获取CPU、内存使用率以及网络使用状态代码.txt 】

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Python获取CPU、内存使用率以及网络使用状态代码
由于psutil已更新到3.0.1版本，最新的代码如下：
#!/usr/bin/env python
import os
import time
import sys
import atexit
import psutil
#print "Welcome,current system is",os.name," 3 seconds late start to get data"
time.sleep(3)
line_num = 1
#function of Get cpu state
def getCPUstate(interval=1):
return (" CPU:"+str(psutil.cpu_percent(interval))+"%")
def getMemorystate():
phymem = psutil.virtual_memory()
line = "Memory: %5s%% %6s/%s"%(
phymem.percent,
str(int(phymem.used/1024/1024))+"M",
str(int(phymem.total/1024/1024))+"M"
)
return line
def bytes2human(n):
"""
>>>bytes2human(10000)
'9.8k'
>>>bytes2human(100001221)
'95.4M'
"""
symbols = ('K','M','G','T','P','E','Z','Y')
prefix = {}
for i ,s in enumerate(symbols):
prefix[s] = 1 << (i+1)*10
for s in reversed(symbols):
if n >=prefix[s]:
value = float(n) / prefix[s]
return '%.2f %s'%(value,s)
return '%.2fB'%(n)
def poll(interval):
"""Retrieve raw stats within an interval window."""
tot_before = psutil.net_io_counters()
pnic_before = psutil.net_io_counters(pernic=True)
#sleep some time
time.sleep(interval)
tot_after = psutil.net_io_counters()
pnic_after = psutil.net_io_counters(pernic=True)
#get cpu stats
cpu_state = getCPUstate(interval)
#get memory
memory_state = getMemorystate()
return (tot_before,tot_after,pnic_before,pnic_after,cpu_state,memory_state)
def refresh_window(tot_before,tot_after,pnic_before,pnic_after,cpu_state,memory_state):
"""print stats on screen"""
#print current time,cpu state,memory
print (time.asctime() +" | "+cpu_state+" | "+
memory_state)
#total
print(" NetStates:")
print(" total bytes: sent: %-10s received: %s"%(\
bytes2human(tot_after.bytes_sent), \
bytes2human(tot_after.bytes_recv)))
print( " total packets: sent: %-10s received: %s"%(\
tot_after.packets_sent,\
tot_after.packets_recv))
# per-network interface details: let's sort network interfaces so
# that the ones which generated more traffic are shown first
print( " ")
nic_names = pnic_after.keys()
#nic_names.sort(key=lambda x: sum(pnic_after[x]), reverse=True)
for name in nic_names:
stats_before = pnic_before[name]
stats_after = pnic_after[name]
templ = "%-15s %15s %15s"
print(templ % (name, "TOTAL", "PER-SEC"))
print(templ % (
"bytes-sent",
bytes2human(stats_after.bytes_sent),
bytes2human(stats_after.bytes_sent - stats_before.bytes_sent) +
'/s',
))
print(templ % (
"bytes-recv",
bytes2human(stats_after.bytes_recv),
bytes2human(stats_after.bytes_recv- stats_before.bytes_recv)
+ '/s',
))
print(templ % (
"pkts-sent",
stats_after.packets_sent,
stats_after.packets_sent - stats_before.packets_sent,
))
print((templ %(
"pkts-recv",
stats_after.packets_recv,
stats_after.packets_recv - stats_before.packets_recv,
)))
print( " ")
try:
interval = 0
while 1:
args = poll(interval)
refresh_window(*args)
interval = 1
except (KeyboardInterrupt,SystemExit):
pass
以上就是本次更新后的实例代码，大家可以一起测试下，如果有其他问题可以在下方的留言区讨论，感谢你对中文源码网的支持。