Date: Thu, 10 Jul 2014 16:45:54 -0400 From: Clint Armstrong <clint@clintarmstrong.net> To: freebsd-jail@freebsd.org Subject: VNET performance Message-ID: <CAJMTyCF956CYHa6JVQ7zuHODM5im%2B3%2B4MPmSTnqDCy7HXiSD8g@mail.gmail.com>
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What is the expected network performance of a VNET jail for network communication between the jail and the host, or between multiple jails? I expected it to approach the 10Gbps of the epair device, but I'm not seeing that. I see between 800 - 1200 Mbps in standard iperf tests both between the host bridge interface and the vnet jail inteface. I see the same poor speeds if I make 2 vnet jails and put one side of the epair in each and test between them. Is the overhead of vnet causing this? Is there anything I can do to improve this performance. I've tested and seen similar performance on 10.0-RELEASE and 11.0-CURRENT.
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