RE: [PATCH RFC/RFT net-next 00/17] net: Convert neighbor tables to per-namespace

[David Laight]

From: Eric W. Biederman
> Sent: 25 July 2018 18:38
...
> >> Further unless I misread something you are increasing the number of
> >> timers to 3 per namespace.  If I create create a thousand network
> >> namespaces that feels like it will hurt system performance overall.
> >
> > It seems to me the timers are per neighbor entry not table. The per
> > table ones are for proxies.
> 
> It seems I misread that bit when I was refreshing my memory on what
> everything is doing.  If we can already have 1024 timers that makes
> timers not a concern.

Surely it is enough to just have a timestamp in each entry.
Deletion of expired items need not be done until insert (which
has the table suitable locked) bumps into an expired item.

	David

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