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Windows/Linux 上的当前网络负载

tag-icon • tag-icon linux windows networking traffic
Windows/Linux 上的当前网络负载

是否可以通过命令行了解远程 linux/windows 机器上的网络负载。例如，我们可以获得 CPU 负载，即 CPU 使用率为 75%。

答案1

我无法过多地谈论该问题的 Linux 部分，并且我相信您正在寻找的答案将根据您使用的 Linux 版本而有所不同。

以下是使用 PowerShell 完成的 Windows 部分的答案：

$allCounters = Get-Counter -Counter "\Network Adapter(*)\Bytes Total/sec"

foreach ($adapter in $allCounters.CounterSamples) {
    if ($adapter.cookedValue -ne 0) {
        $adapterName = $adapter.InstanceName
        $adapterMax = (Get-Counter "\Network Adapter($adapterName)\Current Bandwidth").CounterSamples.cookedValue
        if ($adapterMax -ne 0) {
            $objResult = New-Object -TypeName psobject -Property @{
                Name = $adapterName
                Load = ($adapter.CookedValue/$adapterMax).ToString("P6")
            }
            $results+=$objResult
        }
    }
}

$results

这将返回系统上所有当前活动的适配器并计算其利用率。请记住，Windows 认为的适配器最大容量与基于环境的实际容量可能不是同一个数字。如果您知道接口的实际带宽，则可以用常数值替换 $adapterMax，然后根据该值进行计算（以 bps 为单位）。

对于某些适配器（网桥等），Windows 不会存储带宽值，因此带宽会检查为 0。它非常容易传输流量，但由于它是网桥成员的集合，因此 Windows 不会跟踪最大带宽。

如果您想了解更多有关脚本访问性能指标的信息，请查看此处：MSDN Get-Counter cmdlet 您可以轻松调整相同的脚本来获取远程指标。

答案2

对于 Linux 方面，您可以使用命令netstat。根据您想要查看的具体内容，您可以使用大量标志。（手册页非常详细。）（开关-s提供统计信息。）

例子：

[user@host ~]$ netstat -s
Ip:
    Forwarding: 2
    17721 total packets received
    1 with invalid addresses
    0 forwarded
    0 incoming packets discarded
    17702 incoming packets delivered
    16252 requests sent out
    12 outgoing packets dropped
Icmp:
    33 ICMP messages received
    0 input ICMP message failed
    ICMP input histogram:
        destination unreachable: 33
    39 ICMP messages sent
    0 ICMP messages failed
    ICMP output histogram:
        destination unreachable: 39
IcmpMsg:
        InType3: 33
        OutType3: 39
Tcp:
    140 active connection openings
    77 passive connection openings
    6 failed connection attempts
    5 connection resets received
    0 connections established
    17554 segments received
    16134 segments sent out
    16 segments retransmitted
    0 bad segments received
    12 resets sent
Udp:
    88 packets received
    33 packets to unknown port received
    0 packet receive errors
    121 packets sent
    0 receive buffer errors
    0 send buffer errors
UdpLite:
TcpExt:
    112 TCP sockets finished time wait in fast timer
    365 delayed acks sent
    1 delayed acks further delayed because of locked socket
    2086 packets directly queued to recvmsg prequeue
    1310 bytes directly in process context from backlog
    TCPDirectCopyFromPrequeue: 1015476
    9354 packet headers predicted
    773 packet headers predicted and directly queued to user
    1112 acknowledgments not containing data payload received
    4861 predicted acknowledgments
    TCPTimeouts: 24
    5 connections reset due to unexpected data
    2 connections aborted due to timeout
    TCPDeferAcceptDrop: 12
    TCPRcvCoalesce: 2246
    TCPAutoCorking: 7
    TCPOrigDataSent: 6211
    TCPHystartTrainDetect: 4
    TCPHystartTrainCwnd: 65
    TCPKeepAlive: 115
IpExt:
    InMcastPkts: 14
    OutMcastPkts: 16
    InOctets: 52113215
    OutOctets: 26659850
    InMcastOctets: 1882
    OutMcastOctets: 1962
    InNoECTPkts: 33753

答案3

贝蒙可能就是您所需要的。它将显示有关系统上每个适配器的大量信息。

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