Slow down the speed of the network with windows Guest OS

Hello, I want to start and say I'm new on esxi environment and built a white box at home to get a virtulazition experience. everything works perfectly, but the only problem is when I do the speed test between vm machine connections network physical I get good flow. When I run a test of iperf (comp A, iperf s < - iperf - c model B) between the virtual machine ip address linux to linux vm I get 3 Gbps even for vm linux on a physical computer regardless of its fine operating system. the problem is windows VM Windows VM any version of windows (win 7, win Server 2008 or 2012) iperf speed is 12 Mbps and maximum 80 MB/s, but when I do a physical Windows VM OS iperf test I have avg 670 Mbps. when I do a test of iperf with option - l 65535 I get high speed between the virtual or not windows operating system. My settings, it's that I have pfsense installed within esxi on a map as the router e1000. I vcsa e1000 card I have all the vmxnet3 windows (best debit) card and all the linux e1000 map. all switches are on auto negotiate, all the mtu to 1500. all VM have active VMCI. I searched on google for varies responses that I've changed in a vm windows 7 test parameters of network such as disabling it TSO disabling all offload more of tcp / ipv4 hopeless settings. If anyone can help me improve my speed of network between the virtual machine vm windows would be great or redirect me to a place where they could have the answer to my question that I might have missed. Thank you

Make sure that the network adapter uses vmxnet3. Check http://kb.vmware.com/kb/1009517 please ensure that the following settings are made according to the link: https://gist.github.com/mcantrell/5094393

Tags: VMware

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