https://bugzilla.novell.com/show_bug.cgi?id=833272
https://bugzilla.novell.com/show_bug.cgi?id=833272#c1
Jeff Mahoney changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |WONTFIX
--- Comment #1 from Jeff Mahoney 2013-08-07 12:58:15 EDT ---
The route cache was removed intentionally in v3.6:
commit 89aef8921bfbac22f00e04f8450f6e447db13e42
Author: David S. Miller
Date: Tue Jul 17 11:00:09 2012 -0700
ipv4: Delete routing cache.
The ipv4 routing cache is non-deterministic, performance wise, and is
subject to reasonably easy to launch denial of service attacks.
The routing cache works great for well behaved traffic, and the world
was a much friendlier place when the tradeoffs that led to the routing
cache's design were considered.
What it boils down to is that the performance of the routing cache is
a product of the traffic patterns seen by a system rather than being a
product of the contents of the routing tables. The former of which is
controllable by external entitites.
Even for "well behaved" legitimate traffic, high volume sites can see
hit rates in the routing cache of only ~%10.
Signed-off-by: David S. Miller
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