请告诉我需要寻找哪些设置来解决我的问题。我在 Hyper-V（Windows Server 2016）上遇到了网络性能问题。
该服务器具有 10Gbits 接口。我用它iperf3来测量理论带宽。
从 Hyper-V 主机（Windows Server 2016）到其他 10Gbits/sec 服务器，它显示有 2 个并行工作器：
# iperf3 -c target.host -P 2
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 5.48 GBytes 4.70 Gbits/sec sender
[ 4] 0.00-10.00 sec 5.48 GBytes 4.70 Gbits/sec receiver
[ 6] 0.00-10.00 sec 5.44 GBytes 4.67 Gbits/sec sender
[ 6] 0.00-10.00 sec 5.44 GBytes 4.67 Gbits/sec receiver
[SUM] 0.00-10.00 sec 10.9 GBytes 9.37 Gbits/sec sender
[SUM] 0.00-10.00 sec 10.9 GBytes 9.37 Gbits/sec receiver
看起来不错，大约 10Gbits/秒
从来宾虚拟机（CentOS 7.4）我可以看到相同目标的相同性能：
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 5.39 GBytes 4.63 Gbits/sec 0 sender
[ 4] 0.00-10.00 sec 5.39 GBytes 4.63 Gbits/sec receiver
[ 6] 0.00-10.00 sec 5.38 GBytes 4.62 Gbits/sec 0 sender
[ 6] 0.00-10.00 sec 5.38 GBytes 4.62 Gbits/sec receiver
[SUM] 0.00-10.00 sec 10.8 GBytes 9.25 Gbits/sec 0 sender
[SUM] 0.00-10.00 sec 10.8 GBytes 9.25 Gbits/sec receiver
Linux 客户机之间的 NB 带宽看起来也不错，有 2-3 个工作进程时大约为 8Gbit/s。
但是如果我从 Windows Guest（Windows Server 2016 Datacenter）运行它，我会看到明显不同的画面：
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 1.25 GBytes 1.07 Gbits/sec sender
[ 4] 0.00-10.00 sec 1.25 GBytes 1.07 Gbits/sec receiver
[ 6] 0.00-10.00 sec 1.14 GBytes 983 Mbits/sec sender
[ 6] 0.00-10.00 sec 1.14 GBytes 983 Mbits/sec receiver
[SUM] 0.00-10.00 sec 2.39 GBytes 2.05 Gbits/sec sender
[SUM] 0.00-10.00 sec 2.39 GBytes 2.05 Gbits/sec receiver
仅 2Gbits/秒。并行工作者的数量对摘要没有任何影响。
我尝试过多对：
- Win VM -> Linux (硬件) - 约 2.5GBits/秒
- Win VM -> Linux（VM，同一主机）-〜2.5Gits/秒
- Win VM -> Win VM（同一主机）~ 1.5Gbits/s
-- 信息 --
Name InterfaceDescription Enabled BaseVmqProcessor MaxProcessors NumberOfReceiveQueues
---- -------------------- ------- ---------------- ------------- ----------------
NIC-1GBE-02 QLogic BCM57800 Gigabit Et...#198 False 0:0 16 0
NIC-10GBE-01 QLogic BCM57800 10 Gigabit...#195 True 0:0 16 0
NIC-10GBE-02 QLogic BCM57800 10 Gigabit...#196 False 0:0 16 0
NIC-1GBE-01 QLogic BCM57800 Gigabit Et...#197 False 0:0 16 0
# Get-NetAdapterVmqQueue
Name QueueID MacAddress VlanID Processor VmFriendlyName
---- ------- ---------- ------ --------- --------------
NIC-10GBE-01 0 00-15-5D-04-11-05 50 0:0
PS C:\Windows\system32> Get-NetAdapterRss
Name : NIC-1GBE-02
InterfaceDescription : QLogic BCM57800 Gigabit Ethernet (NDIS VBD Client) #198
Enabled : True
NumberOfReceiveQueues : 4
Profile : NUMAStatic
BaseProcessor: [Group:Number] : 0:0
MaxProcessor: [Group:Number] : 0:38
MaxProcessors : 16
RssProcessorArray: [Group:Number/NUMA Distance] : 0:0/0 0:2/0 0:4/0 0:6/0 0:8/0 0:10/0 0:12/0 0:14/0
0:16/0 0:18/0 0:20/32767 0:22/32767 0:24/32767 0:26/32767
0:28/32767 0:30/32767
0:32/32767 0:34/32767 0:36/32767 0:38/32767
IndirectionTable: [Group:Number] :
Name : vEthernet (VSW-10GBE-01)
InterfaceDescription : Hyper-V Virtual Ethernet Adapter #2
Enabled : True
NumberOfReceiveQueues : 16
Profile : NUMAStatic
BaseProcessor: [Group:Number] : 0:0
MaxProcessor: [Group:Number] : 0:38
MaxProcessors : 4
RssProcessorArray: [Group:Number/NUMA Distance] : 0:0/0 0:2/0 0:4/0 0:6/0 0:8/0 0:10/0 0:12/0 0:14/0
0:16/0 0:18/0 0:20/0 0:22/0 0:24/0 0:26/0 0:28/0 0:30/0
0:32/0 0:34/0 0:36/0 0:38/0
IndirectionTable: [Group:Number] : 0:0 0:20 0:2 0:22 0:0 0:20 0:2 0:22
0:0 0:20 0:2 0:22 0:0 0:20 0:2 0:22
Name : NIC-10GBE-01
InterfaceDescription : QLogic BCM57800 10 Gigabit Ethernet (NDIS VBD Client) #195
Enabled : True
NumberOfReceiveQueues : 16
Profile : NUMAStatic
BaseProcessor: [Group:Number] : :0
MaxProcessor: [Group:Number] : :38
MaxProcessors : 16
RssProcessorArray: [Group:Number/NUMA Distance] :
IndirectionTable: [Group:Number] :
Name : NIC-10GBE-02
InterfaceDescription : QLogic BCM57800 10 Gigabit Ethernet (NDIS VBD Client) #196
Enabled : True
NumberOfReceiveQueues : 4
Profile : NUMAStatic
BaseProcessor: [Group:Number] : 0:0
MaxProcessor: [Group:Number] : 0:38
MaxProcessors : 16
RssProcessorArray: [Group:Number/NUMA Distance] : 0:0/0 0:2/0 0:4/0 0:6/0 0:8/0 0:10/0 0:12/0 0:14/0
0:16/0 0:18/0 0:20/32767 0:22/32767 0:24/32767 0:26/32767
0:28/32767 0:30/32767
0:32/32767 0:34/32767 0:36/32767 0:38/32767
IndirectionTable: [Group:Number] :
Name : NIC-1GBE-01
InterfaceDescription : QLogic BCM57800 Gigabit Ethernet (NDIS VBD Client) #197
Enabled : True
NumberOfReceiveQueues : 4
Profile : NUMAStatic
BaseProcessor: [Group:Number] : 0:0
MaxProcessor: [Group:Number] : 0:38
MaxProcessors : 16
RssProcessorArray: [Group:Number/NUMA Distance] : 0:0/0 0:2/0 0:4/0 0:6/0 0:8/0 0:10/0 0:12/0 0:14/0
0:16/0 0:18/0 0:20/32767 0:22/32767 0:24/32767 0:26/32767
0:28/32767 0:30/32767
0:32/32767 0:34/32767 0:36/32767 0:38/32767
IndirectionTable: [Group:Number] :
Windows 客户机有什么问题？我可以调整什么来达到 10Gbit/s 左右？
答案1
答案2
您的描述与此 KB 完全相同：“如果启用了 VMQ，Windows Server 2012 Hyper-V 主机上的虚拟机网络性能较差“。
必须为您的适配器禁用 VMQ。如果这不起作用，请检查事件日志以了解原因。