netdev - Re: [PATCH net-next-2.6] ipv4: speedup inet_dump

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Message-Id: <20091113.205015.125854704.davem@davemloft.net>
Date:	Fri, 13 Nov 2009 20:50:15 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6] ipv4: speedup inet_dump_ifaddr()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 12 Nov 2009 18:44:25 +0100

> [PATCH net-next-2.6] ipv4: speedup inet_dump_ifaddr()
> 
> When handling large number of netdevices, inet_dump_ifaddr()
> is very slow because it has O(N2) complexity.
> 
> Instead of scanning one single list, we can use the NETDEV_HASHENTRIES
> sub lists of the dev_index hash table, and RCU lookups.
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> Acked-by: Stephen Hemminger <shemminger@...tta.com>

Applied.
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