Linux常用命令-ifstat

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命令

ifstat

描述

handy utility to read network interface statistics
查看网络接口统计信息

用法

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ifstat [ OPTIONS ] [ INTERFACE_LIST ]

选项

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Options:
  -a, --ignore         忽略历史文件数据,即显示当前的数据
  -d, --scan=SECS      指定每几秒抽样一次统计数据,注意默认为后台运行
  -e, --errors         显示错误
  -j, --json           显示为JSON格式
  -n, --nooutput       不显示任何输出,只更新历史文件
  -p, --pretty         优化显示格式
  -r, --reset          重置历史
  -s, --noupdate       不要更新历史
  -t, --interval=SECS  显示过去几秒钟的平均值
  -z, --zeros          显示活动为零的条目
  -x, --extended=TYPE  显示指定类型的扩展统计信息,TYPE参数cpu_hits

默认历史文件路径/tmp/.ifstat.u$UID,如/tmp/.ifstat.u0

注意

无

示例

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$ ifstat -V
ifstat utility, iproute2-ss170501

# 首次执行会显示当前汇总统计,并写入到/tmp/.ifstat.u0文件中
$ ifstat
#kernel
Interface        RX Pkts/Rate    TX Pkts/Rate    RX Data/Rate    TX Data/Rate
                 RX Errs/Drop    TX Errs/Drop    RX Over/Rate    TX Coll/Rate
lo                465914 0        465914 0       625885K 0       625885K 0
                       0 0             0 0             0 0             0 0
eth0               8088K 0        829431 0         1527M 0         1036M 0
                       0 162           0 0             0 0             0 0
# 该文件为上一次的统计数据
$ more /tmp/.ifstat.u0
#kernel
1 lo 466027 0 466027 0 625892330 0 625892330 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
 0 0 0 0 0 0 0 0 0 0 0 0 0
2 eth0 8092621 0 830397 0 1527932937 0 1036848657 0 0 0 0 0 162 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
# 再次执行,默认情况下仅显示上次调用和当前调用之间的差异,并更新/tmp/.ifstat.u0文件内容
$ ifstat
#kernel
Interface        RX Pkts/Rate    TX Pkts/Rate    RX Data/Rate    TX Data/Rate
                 RX Errs/Drop    TX Errs/Drop    RX Over/Rate    TX Coll/Rate
lo                     2 0             2 0           104 0           104 0
                       0 0             0 0             0 0             0 0
eth0                   5 0             4 0           360 0           392 0
                       0 0             0 0             0 0             0 0

# -a 显示当前的统计数据
$ ifstat -a
# -j 显示为json格式
$ ifstat -j
{"kernel":{"lo":{"rx_packets":466070,"tx_packets":466070,"rx_bytes":625895786,"tx_bytes":625895786,"rx_errors":0,"tx_errors":0,"rx_dropped":0,"tx_dropped":0,"multicast":0,"collisions":0},"eth0":{"rx_packets":8093534,"tx_packets":830501,"rx_bytes":1527989911,"tx_bytes":1036857851,"rx_errors":0,"tx_errors":0,"rx_dropped":162,"tx_dropped":0,"multicast":0,"collisions":0}}}

# ifstat获取的数据和ifconfig查看的网卡数据是一致的
$ ifstat -j
{"kernel":{"lo":{"rx_packets":466171,"tx_packets":466171,"rx_bytes":625902258,"tx_bytes":625902258,"rx_errors":0,"tx_errors":0,"rx_dropped":0,"tx_dropped":0,"multicast":0,"collisions":0},"eth0":{"rx_packets":8096750,"tx_packets":831115,"rx_bytes":1528196531,"tx_bytes":1036914347,"rx_errors":0,"tx_errors":0,"rx_dropped":162,"tx_dropped":0,"multicast":0,"collisions":0}}}
$ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.31.80  netmask 255.255.255.0  broadcast 192.168.31.255
        inet6 fe80::2daa:d1ea:5915:ce9f  prefixlen 64  scopeid 0x20<link>
        ether 00:50:56:2f:07:60  txqueuelen 1000  (Ethernet)
        RX packets 8096769  bytes 1528197941 (1.4 GiB)
        RX errors 0  dropped 162  overruns 0  frame 0
        TX packets 831126  bytes 1036915361 (988.8 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 466171  bytes 625902258 (596.9 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 466171  bytes 625902258 (596.9 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0