netdev - Re: [RFC] net: ipv4 -- Introduce ifa limit per net

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Message-ID: <20160305184459.GO4184@uranus.lan>
Date:	Sat, 5 Mar 2016 21:44:59 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org, solar@...nwall.com,
	vvs@...tuozzo.com, avagin@...tuozzo.com, xemul@...tuozzo.com,
	vdavydov@...tuozzo.com, khorenko@...tuozzo.com
Subject: Re: [RFC] net: ipv4 -- Introduce ifa limit per net

On Sat, Mar 05, 2016 at 11:33:12AM -0500, David Miller wrote:
...
> 
> Probably the same optimization can be applied there, see patch below.
> And if that doesn't do it, there is a really easy way to batch the
> delete by scanning the FIB tree in one go and deleting every entry
> that points to "in_dev".  But I suspect we really won't need that.

It made it to work faster but still for 10000 addresses it takes
~3-4 minutes to become alive again.

David, give me some time, I'll prepare tests and report the
results on patches and unpatched versions. And thanks a huge
for both patches!

	Cyrill