linux获取内存、cpu、负载、网口流量、磁盘信息

内存信息 / meminfo

返回dict

1.  
   #!/usr/bin/env python
2.  
   def memory_stat():
3.  
   mem = {}
4.  
   f = open("/proc/meminfo")
5.  
   lines = f.readlines()
6.  
   f.close()
7.  
   for line in lines:
8.  
   if len(line) < 2: continue
9.  
   name = line.split(':')[0]
10.  
    var = line.split(':')[1].split()[0]
11.  
    mem[name] = long(var) * 1024.0
12.  
    mem['MemUsed'] = mem['MemTotal'] - mem['MemFree'] - mem['Buffers'] - mem['Cached']
13.  
    return mem

CPU信息 / cpuinfo
返回list，每核心一dict

1.  
   #!/usr/bin/env python
2.  
   def cpu_stat():
3.  
   cpu = []
4.  
   cpuinfo = {}
5.  
   f = open("/proc/cpuinfo")
6.  
   lines = f.readlines()
7.  
   f.close()
8.  
   for line in lines:
9.  
   if line == '\n':
10.  
    cpu.append(cpuinfo)
11.  
    cpuinfo = {}
12.  
    if len(line) < 2: continue
13.  
    name = line.split(':')[0].rstrip()
14.  
    var = line.split(':')[1]
15.  
    cpuinfo[name] = var
16.  
    return cpu

负载信息 / loadavg
返回dict

1.  
   #!/usr/bin/env python
2.  
   def load_stat():
3.  
   loadavg = {}
4.  
   f = open("/proc/loadavg")
5.  
   con = f.read().split()
6.  
   f.close()
7.  
   loadavg['lavg_1']=con[0]
8.  
   loadavg['lavg_5']=con[1]
9.  
   loadavg['lavg_15']=con[2]
10.  
    loadavg['nr']=con[3]
11.  
    loadavg['last_pid']=con[4]
12.  
    return loadavg

运转时间 / Uptime
返回dict

1.  
   #!/usr/bin/env python
2.  
   def uptime_stat():
3.  
   uptime = {}
4.  
   f = open("/proc/uptime")
5.  
   con = f.read().split()
6.  
   f.close()
7.  
   all_sec = float(con[0])
8.  
   MINUTE,HOUR,DAY = 60,3600,86400
9.  
   uptime['day'] = int(all_sec / DAY )
10.  
    uptime['hour'] = int((all_sec % DAY) / HOUR)
11.  
    uptime['minute'] = int((all_sec % HOUR) / MINUTE)
12.  
    uptime['second'] = int(all_sec % MINUTE)
13.  
    uptime['Free rate'] = float(con[1]) / float(con[0])
14.  
    return uptime

获取网卡流量信息 /proc/net/dev
返回dict,单位byte

1.  
   #!/usr/bin/env python
2.  
   def net_stat():
3.  
   net = []
4.  
   f = open("/proc/net/dev")
5.  
   lines = f.readlines()
6.  
   f.close()
7.  
   for line in lines[2:]:
8.  
   con = line.split()
9.  
   """
10.  
    intf = {}
11.  
    intf['interface'] = con[0].lstrip(":")
12.  
    intf['ReceiveBytes'] = int(con[1])
13.  
    intf['ReceivePackets'] = int(con[2])
14.  
    intf['ReceiveErrs'] = int(con[3])
15.  
    intf['ReceiveDrop'] = int(con[4])
16.  
    intf['ReceiveFifo'] = int(con[5])
17.  
    intf['ReceiveFrames'] = int(con[6])
18.  
    intf['ReceiveCompressed'] = int(con[7])
19.  
    intf['ReceiveMulticast'] = int(con[8])
20.  
    intf['TransmitBytes'] = int(con[9])
21.  
    intf['TransmitPackets'] = int(con[10])
22.  
    intf['TransmitErrs'] = int(con[11])
23.  
    intf['TransmitDrop'] = int(con[12])
24.  
    intf['TransmitFifo'] = int(con[13])
25.  
    intf['TransmitFrames'] = int(con[14])
26.  
    intf['TransmitCompressed'] = int(con[15])
27.  
    intf['TransmitMulticast'] = int(con[16])
28.  
    """
29.  
    intf = dict(
30.  
    zip(
31.  
    ( 'interface','ReceiveBytes','ReceivePackets',
32.  
    'ReceiveErrs','ReceiveDrop','ReceiveFifo',
33.  
    'ReceiveFrames','ReceiveCompressed','ReceiveMulticast',
34.  
    'TransmitBytes','TransmitPackets','TransmitErrs',
35.  
    'TransmitDrop', 'TransmitFifo','TransmitFrames',
36.  
    'TransmitCompressed','TransmitMulticast' ),
37.  
    ( con[0].rstrip(":"),int(con[1]),int(con[2]),
38.  
    int(con[3]),int(con[4]),int(con[5]),
39.  
    int(con[6]),int(con[7]),int(con[8]),
40.  
    int(con[9]),int(con[10]),int(con[11]),
41.  
    int(con[12]),int(con[13]),int(con[14]),
42.  
    int(con[15]),int(con[16]), )
43.  
    )
44.  
    )
45.  
     
46.  
    net.append(intf)
47.  
    return net

磁盘空间使用
使用内置python内置函数，返回dict,单位byte

1.  
   #!/usr/bin/env python
2.  
   def disk_stat():
3.  
   import os
4.  
   hd={}
5.  
   disk = os.statvfs("/")
6.  
   hd['available'] = disk.f_bsize * disk.f_bavail
7.  
   hd['capacity'] = disk.f_bsize * disk.f_blocks
8.  
   hd['used'] = disk.f_bsize * disk.f_bfree
9.  
   return hd