From: David Miller <davem@davemloft.net>
To: dada1@cosmosbay.com
Cc: netdev@vger.kernel.org
Subject: Re: [IPV4] ROUTE: ip_rt_dump() is unecessary slow
Date: Mon, 07 Jan 2008 21:52:53 -0800 (PST) [thread overview]
Message-ID: <20080107.215253.250616600.davem@davemloft.net> (raw)
In-Reply-To: <20080107193002.df137d57.dada1@cosmosbay.com>
From: Eric Dumazet <dada1@cosmosbay.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@cosmosbay.com>
I think removing quadratic behavior is a bug fix, thus applied
to net-2.6, thanks Eric :-)
next prev parent reply other threads:[~2008-01-08 5:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-07 18:30 [IPV4] ROUTE: ip_rt_dump() is unecessary slow Eric Dumazet
2008-01-08 5:52 ` David Miller [this message]
2008-01-08 6:11 ` Eric Dumazet
2008-01-08 6:15 ` David Miller
2008-01-08 6:37 ` Eric Dumazet
2008-01-09 6:02 ` Herbert Xu
2008-01-09 7:38 ` [NET] ROUTE: fix rcu_dereference() uses in /proc/net/rt_cache Eric Dumazet
2008-01-09 9:46 ` Herbert Xu
2008-01-09 10:37 ` Eric Dumazet
2008-01-09 14:22 ` Paul E. McKenney
2008-01-09 14:31 ` David Miller
2008-01-09 14:43 ` Paul E. McKenney
2008-01-09 17:36 ` Eric Dumazet
2008-01-10 11:56 ` David Miller
2008-01-10 14:06 ` [DECNET] ROUTE: fix rcu_dereference() uses in /proc/net/decnet_cache Eric Dumazet
2008-01-11 6:35 ` David Miller
2008-01-10 23:10 ` [NET] ROUTE: fix rcu_dereference() uses in /proc/net/rt_cache Jarek Poplawski
2008-01-10 23:51 ` Paul E. McKenney
2008-01-11 14:13 ` Jarek Poplawski
2008-01-11 0:00 ` Herbert Xu
2008-01-11 8:30 ` Jarek Poplawski
2008-01-11 9:11 ` Jarek Poplawski
2008-01-11 9:23 ` Jarek Poplawski
2008-01-11 10:38 ` Herbert Xu
2008-01-11 11:30 ` Jarek Poplawski
2008-01-11 10:37 ` Herbert Xu
2008-01-11 12:31 ` Jarek Poplawski
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