netdev - Re: [IPV4] ROUTE: ip_rt_dump() is unecessary slow

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Message-Id: <20080107.215253.250616600.davem@davemloft.net>
Date:	Mon, 07 Jan 2008 21:52:53 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	dada1@...mosbay.com
Cc:	netdev@...r.kernel.org
Subject: Re: [IPV4] ROUTE: ip_rt_dump() is unecessary slow

From: Eric Dumazet <dada1@...mosbay.com>
Date: Mon, 7 Jan 2008 19:30:02 +0100

> I noticed "ip route list cache x.y.z.t" can be *very* slow.
> 
> While strace-ing -T it I also noticed that first part of route cache is
> fetched quite fast :
 ...
> The following patch corrects this performance/latency problem, removing quadratic behavior.
> 
> Signed-off-by: Eric Dumazet <dada1@...mosbay.com>

I think removing quadratic behavior is a bug fix, thus applied
to net-2.6, thanks Eric :-)
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