On 10 Jul 2014, at 20:45 , Clint Armstrong cl...@clintarmstrong.net wrote:
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.
epair has a netisr queuing in between as you cannot call the input routines
directly from the output routines. I was able to get a bit more traffic
through by doing pinning games.
I wonder what a vale switch for vnets could achieve.
—
Bjoern A. Zeeb Come on. Learn, goddamn it., WarGames, 1983
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