On 9/26/14, 7:40 AM, Nicolas Dichtel wrote:
No, I don't want to monitor anything. Even if I wanted, I would just
start one
daemon in each netns instead of one for all.
Ok you don't want, but some other people (not only me) want it! And
having one
daemon per netns does not scale: there are scenarii with thousand netns
which
are dynamically created and deleted.
An example of the scaling problem using quagga (old but still seems to
be a relevant data point):
https://lists.quagga.net/pipermail/quagga-users/2010-February/011351.html
"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.
David
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