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SubjectRe: [PATCH RFC/RFT net-next 00/17] net: Convert neighbor tables to per-namespace
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From: David Ahern <dsahern@gmail.com>
Date: Tue, 17 Jul 2018 13:02:18 -0600

> I understand the concern about global resource and limits: as it stands
> you have to increase the limits in init_net to the max expected and hope
> for the best. With per namespace limits you can lower the limits of each
> namespace better control the total impact on the total memory used.
> Perhaps the defaults for namespaces after init_net could have really low
> defaults (e.g., 16 / 32 / 64 for gc_thresh 1/2/3) requiring admin
> intervention.

How does this work when a namespace creates another namespace?

Changing the defaults for non-init_net namespaces could work, but that
could be a surprise to some people.

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