netdev - Re: [IPV4 0/9] TRIE performance patches

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Message-Id: <20080122.215831.221891291.davem@davemloft.net>
Date:	Tue, 22 Jan 2008 21:58:31 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	shemminger@...ux-foundation.org
Cc:	netdev@...r.kernel.org
Subject: Re: [IPV4 0/9] TRIE performance patches

From: Stephen Hemminger <shemminger@...ux-foundation.org>
Date: Tue, 22 Jan 2008 15:37:33 -0800

> 
> Time to handle a full BGP load (163K of routes).
> 
> Before:		Load		Dump		Flush
> hash		3.5		 0.5		0.7
> 2.6.23.14	3.4		19.3		10.3
> net-2.6.25	3.4		18.7		9.8
> 
> After:
> 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
> 
> Load:	ip -batch iproute-table
> Dump:	ip route >/dev/null
> Flush:	ip route flush table main

Nice work Stephen, all 9 patches applied.

We'll need to think about that new -EBUSY behavior, it
might confuse routing daemons and similar, and therefore
we might need to find a way to fudge continuing the dump
instead of failing.
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