linux-kernel - Re: Thousands of interfaces

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Date:	Tue, 31 Oct 2006 07:55:04 -0800
From:	Ben Greear <greearb@...delatech.com>
To:	David Miller <davem@...emloft.net>
CC:	peter.hicks@...gs.co.uk, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: Thousands of interfaces

David Miller wrote:
> From: Peter Hicks <peter.hicks@...gs.co.uk>
> Date: Tue, 31 Oct 2006 09:25:50 +0000
>
> [ Discussion belongs on netdev@...r.kernel.org, added to CC: ]
>
>   
>> I have a dual 3GHz Xeon machine with a 2.4.21 kernel and thousands (15k+) of
>> ipip tunnel interfaces.  These are being used to tunnel traffic from remote
>> routers, over a private network, and handed off to a third party.
>>     
>  ...
>   
>> Is it possible to speed up creation of the interfaces?  Currently it takes
>> around 24 hours.  Is there are more efficient way to handle a very large
>> number of IP-IP tunnels?  Would upgrading to a 2.6 kernel be of use?
>>     
>
>   
2.6 (and the associated 'ip' tool) does have some improvements for 
showing very
large numbers of interfaces.  I haven't tried more than a few thousand 
though...

Ben


-- 
Ben Greear <greearb@...delatech.com> 
Candela Technologies Inc  http://www.candelatech.com


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