From: Eric Dumazet <eric.dumazet@xxxxxxxxx> Date: Thu, 8 Mar 2018 10:05:12 -0800 > Another problematic legacy behavior is the automatic creation of > fallback tunnels, which hurts netns creation/deletion. > > Some environments want to create a netns for every job/task, and they > do not care if the init netns has these tunnels or not. > > We have a local patch adding yet another knob to control this, since > it saves a lot of cpu cycles (about 10ms per netns create/delete pair > here) Yeah, understood. At small scale the current behavior maybe made sense, but these days it really doesn't. No objections to the knob if you want to submit it.
