Re: Regarding Routing cache

Please, no private mails on this discussion. I added back netdev on CC.

Le jeudi 17 novembre 2011 à 12:09 +0530, Ajith Adapa a écrit :

Hi,

Sorry about my naive post regarding the issue.

quoted

IPv6 has no routing cache, and wont have one, since we are trying to
remove IPv4 routing cache :)

But it would have performance issues right as we always check fib
table for destination route ?

Is there any references or posts or material which takes about the
reason for removing the ipv6 and ipv4 routing caches ?

routing cache doesnt scale and was difficult to tune in some situations.

It uses a lot of memory, and doesnt fit in CPU caches.

It was a good solution in the past, but better is to get scalable algo
in the first place.

http://vger.kernel.org/netconf2011.html

http://vger.kernel.org/netconf2011_slides/davem_netconf2011.pdf