netdev - [IPV4 0/9] TRIE performance patches

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Date:	Wed, 23 Jan 2008 15:06:47 +0100
From:	Robert Olsson <Robert.Olsson@...a.slu.se>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: [IPV4 0/9] TRIE performance patches


Stephen Hemminger writes:

 > Time to handle a full BGP load (163K of routes).
 > 
 > Before:		Load		Dump		Flush
 >
 > kmem_cache	3.8		13.0		7.2
 > iter		3.9		12.3		6.9
 > unordered	3.1		11.9		4.9
 > find_node	3.1		 0.3		1.2

 I certainly like the speed but what will we brake when
 we don't return in longest prefix order?

labb:/# ip r
default via 10.10.10.1 dev eth0 
5.0.0.0/8 via 192.168.2.2 dev eth3 
10.10.10.0/24 dev eth0  proto kernel  scope link  src 10.10.10.2 
10.10.11.0/24 dev eth1  proto kernel  scope link  src 10.10.11.1 
11.0.0.0/8 via 10.10.11.2 dev eth1 
192.168.1.0/24 dev eth2  proto kernel  scope link  src 192.168.1.2 
192.168.2.0/24 dev eth3  proto kernel  scope link  src 192.168.2.1 

labb:/# ip route list match 10.10.10.1
default via 10.10.10.1 dev eth0 
10.10.10.0/24 dev eth0  proto kernel  scope link  src 10.10.10.2 
labb:/# 

Maybe the unordered dump can be ordered cheaply...

Cheers.
				--ro

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