Re: [RFC] [patch 5/6] [Network namespace] ipv4 isolation

James Morris wrote:

On Fri, 9 Jun 2006, [email protected] wrote:

When an outgoing packet has the loopback destination addres, the
skbuff is filled with the network namespace. So the loopback packets
never go outside the namespace. This approach facilitate the migration
of loopback because identification is done by network namespace and
not by address. The loopback has been benchmarked by tbench and the
overhead is roughly 1.5 %

I think you'll need to make it so this code has zero impact when not configured.

Indeed, and over stuff other than loopback too. I'll not so humbly suggest :) netperf TCP_STREAM and TCP_RR figures _with_ CPU utilization/service demand measures.

rick jones
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