netns performance

This was talked about before (e.g. https://lkml.org/lkml/2014/6/11/42) In 3.10, this 'script' takes ~1s to run, regardless of # CPU: ip netns add foo ip netns add bar for i in `seq 0 1000` do echo -e 'netns exec foo echo\nnetns exec bar echo' >> ipnetns.batch done time ip -b ipnetns.batch >

netns performance

This was talked about before (e.g. https://lkml.org/lkml/2014/6/11/42) In 3.10, this 'script' takes ~1s to run, regardless of # CPU: ip netns add foo ip netns add bar for i in `seq 0 1000` do echo -e 'netns exec foo echo\nnetns exec bar echo' >> ipnetns.batch done time ip -b ipnetns.batch >