netdev - Re: [PATCH net-next v2] bridge: vlan: allow to suppress local mac install for all vlans

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Date:	Tue, 25 Aug 2015 23:06:41 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	nikolay@...ulusnetworks.com
Cc:	netdev@...r.kernel.org, vyasevic@...hat.com,
	toshiaki.makita1@...il.com, stephen@...workplumber.org,
	bridge@...ts.linux-foundation.org, wkok@...ulusnetworks.com
Subject: Re: [PATCH net-next v2] bridge: vlan: allow to suppress local mac
 install for all vlans

From: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Date: Tue, 25 Aug 2015 22:28:16 -0700

> Certainly, that should be done and I will look into it, but the
> essence of this patch is a bit different. The problem here is not
> the size of the fdb entries, it’s more the number of them - having
> 96000 entries (even if they were 1 byte ones) is just way too much
> especially when the fdb hash size is small and static. We could work
> on making it dynamic though, but still these type of local entries
> per vlan per port can easily be avoided with this option.

96000 bits can be stored in 12k.  Get where I'm going with this?

Look at the problem sideways.