Re: [RFC PATCH net-next v2 0/5] netns: allow to identify peer netns
From: David Ahern
Date: Fri Sep 26 2014 - 15:15:25 EST
On 9/26/14, 7:40 AM, Nicolas Dichtel wrote:
Ok you don't want, but some other people (not only me) want it! And
No, I don't want to monitor anything. Even if I wanted, I would just
daemon in each netns instead of one for all.
daemon per netns does not scale: there are scenarii with thousand netns
are dynamically created and deleted.
An example of the scaling problem using quagga (old but still seems to
be a relevant data point):
"2k VRFs that would be 2.6G"
And that does not include the overhead of each namespace -- roughly
200kB/namespace on one kernel I checked (v3.10). So that's a ballpark of
3G of memory.
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