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. )
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