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

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Message-Id: <20160309.152730.691838022304871697.davem@davemloft.net>
Date:	Wed, 09 Mar 2016 15:27:30 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	gorcunov@...il.com
Cc:	alexei.starovoitov@...il.com, 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

From: Cyrill Gorcunov <gorcunov@...il.com>
Date: Wed, 9 Mar 2016 20:53:07 +0300

> On Wed, Mar 09, 2016 at 12:24:00PM -0500, David Miller wrote:
> ...
>> We asked you for numbers without a lot of features enabled, it'll
>> help us diagnose which subsystem still causes a lot of overhead
>> much more clearly.
>> 
>> So please do so.
> 
> Sure. Gimme some time and I'll back with numbers.
> 
>> Although it's already pretty clear that netfilter conntrack
>> cleanup is insanely expensive.
> 
> Yes. I can drop it off for a while and run tests without it,
> then turn it back and try again. Would you like to see such
> numbers?

That would be very helpful, yes.