python 获取linux的性能信息
python 获取linux的内存信息1、安装psutil源码
https://pypi.python.org/pypi?:action=display&name=psutil#downloads
找到psutil-5.2.2.tar.gz 点击即可下载
shell # tar xzvf psutil-5.2.2.tar.gz
shell # cd psutil-5.2.2
shell # python setup.py install
2、使用psutil获取内存信息
终端输入python
shell # python
Python 2.6.6 (r266:84292, Aug 18 2016, 15:13:37)
on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import psutil
>>> mem = psutil.virtual_memory()
>>> mem
svmem(total=8254787584, available=3015909376, percent=63.5, used=4780199936, free=272994304, active=5022015488, inactive=2267688960, buffers=147845120, cached=3053748224, shared=199192576)
>>>mem.total,mem.used #总内存，内存使用率
(8254787584, 4780199936)#然后依次类推
>>> psutil.swap_memory()
sswap(total=4160745472, used=463339520, free=3697405952, percent=11.1, sin=8634368, sout=472358912) #swap 信息
>>> psutil.swap_memory().used #swap 使用，后面的可以以此类推
463339520
3、使用psutil获取cpu信息
shell # python
Python 2.6.6 (r266:84292, Aug 18 2016, 15:13:37)
on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import psutil
>>> psutil.cpu_times_percent()
scputimes(user=0.5, nice=0.0, system=0.29999999999999999,> >>> psutil.cpu_times_percent().user #user 占用cpu的时间比,以此类推
>>> psutil.cpu_count() #获取cpu的逻辑个数
4
4、使用psutil获取磁盘disk信息
>>> psutil.disk_partitions()
#获取磁盘分区信息
>>> psutil.disk_partitions() #获取磁盘第一个分区
sdiskpart(device='/dev/mapper/vg_zabbixserver161-lv_root', mountpoint='/', fstype='ext4', opts='rw')
>>> psutil.disk_partitions().mountpoint #获取磁盘第一个分区的挂载点
'/'
>>> psutil.disk_usage('/') #第一个分区的使用信息
sdiskusage(total=37525069824, used=19492302848, free=16119746560, percent=54.700000000000003)
>>> psutil.disk_usage('/').total #第一个分区的总使用量
37525069824
>>> psutil.disk_io_counters() #总的磁盘读写
sdiskio(read_count=14272042, write_count=221162728, read_bytes=114464508928, write_bytes=3038042720256, read_time=90401135, write_time=3063482316, read_merged_count=19088, write_merged_count=53414985, busy_time=2101696856)
>>> psutil.disk_io_counter(perdisk=true) #每个磁盘的IO信息
{'dm-1': sdiskio(read_count=2405, write_count=117472, read_bytes=9850880, write_bytes=481165312, read_time=29109, write_time=9174865, read_merged_count=0, write_merged_count=0, busy_time=81047), 'sda2': sdiskio(read_count=7126122, write_count=83871599, read_bytes=57226652160, write_bytes=1518993299456, read_time=45019892, write_time=21754212, read_merged_count=18833, write_merged_count=53377640, busy_time=1050439643), 'dm-0': sdiskio(read_count=7142858, write_count=137133182, read_bytes=57216399872, write_bytes=1518512134144, read_time=45351656, write_time=3030824832, read_merged_count=0, write_merged_count=0, busy_time=1050531804), 'sda1': sdiskio(read_count=673, write_count=41897, read_bytes=11671552, write_bytes=81393664, read_time=598, write_time=1807846, read_merged_count=255, write_merged_count=37583, busy_time=656567)}
5、网络信息
>>> psutil.net_io_counters() #获取总的网络信息
snetio(bytes_sent=29464674146, bytes_recv=33920851012, packets_sent=110329213, packets_recv=111418651, errin=0, errout=0, dropin=0, dropout=0)
>>> psutil.net_io_counters(pernic=True) #获取单个出口的网络I/O信息
{'lo': snetio(bytes_sent=23965934128, bytes_recv=23965934128, packets_sent=70801554, packets_recv=70801554, errin=0, errout=0, dropin=0, dropout=0), 'eth1': snetio(bytes_sent=5499003974, bytes_recv=9955206326, packets_sent=39528890, packets_recv=40618352, errin=0, errout=0, dropin=0, dropout=0)}
6、其他网络信息
获取用户信息
>>> psutil.users() #获取当前用户
获取开机时间
>>> psutil.boot_time() #获取机器开机时间，返回unix时间戳
1494645282.0
>>> datetime.datetime.fromtimestamp(psutil.boot_time()).strftime("%Y-%m-%d %H:%M:%S")
'2017-05-13 11:14:42' #unix时间转换自然时间格式
7、系统进程管理办法
>>> import psutil
>>> psutil.pids() #列出所有系统进程
>>> p = psutil.Process(2554)
>>> p.name() #进程的名字
'nginx'
>>> p.exe() #进程bin路径
'/usr/sbin/nginx'
>>> p.cwd() #进程工作目录绝对路径
'/'
>>> p.status() #进程状态
'sleeping'
>>> p.create_time() #进程创建时间，时间戳格式
1494645304.8499999
>>> p.uids() #进程uid
puids(real=0, effective=0, saved=0)
>>> p.gids() #进程pid
pgids(real=0, effective=0, saved=0)
>>> p.cpu_times() #进程cpu信息
pcputimes(user=0.0, system=0.0, children_user=0.0, children_system=0.0)
>>> p.memory_percent() #进程内存使用率
0.016870694561533128
>>> p.memory_info() #进程内存信息
pmem(rss=1392640, vms=45932544, shared=405504, text=864256, lib=0, data=835584, dirty=0)
p.io_counters() #进程的I/O信息
pio(read_count=0, write_count=1, read_bytes=4096, write_bytes=4096, read_chars=0, write_chars=5)
>>> p.connections() #返回打开进程的socket列表
>>> p.num_threads() #进程开启的线程数
1
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