netdev - Re: inetpeer with create==0

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Date:	Thu, 3 Mar 2011 16:07:32 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org
Subject: Re: inetpeer with create==0

On Thu, Mar 3, 2011 at 2:42 PM, David Miller <davem@...emloft.net> wrote:
>
> Thats why I am working hard to remove it :-)
>
> The %99 percentile performance of our routing cache is absolutely
> terrible.  The routing cache does nothing except get in the way.
>
> It is the reason why Linux is still completely unsuitable for use as a
> router on the core internet.
>

After routing cache is removed totally, Linux is still unsuitable for
use as a router on the core internet. Because it isn't a realtime OS,
and the forwarding delay isn't bounded. With routing cache, the memory
cost isn't bounded too. :)

-- 
Regards,
Changli Gao(xiaosuo@...il.com)
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