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From: David Miller <davem@davemloft.net>
To: shemminger@vyatta.com
Cc: dada1@cosmosbay.com, benny+usenet@amorsen.dk, minyard@acm.org,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	paulmck@linux.vnet.ibm.com
Subject: Re: [PATCH 3/3] Convert the UDP hash lock to RCU
Date: Tue, 07 Oct 2008 13:55:48 -0700 (PDT)	[thread overview]
Message-ID: <20081007.135548.56141000.davem@davemloft.net> (raw)
In-Reply-To: <20081007160729.60c076c4@speedy>

From: Stephen Hemminger <shemminger@vyatta.com>
Date: Tue, 7 Oct 2008 16:07:29 +0200

> The idea of keeping chains short is the problem. That code should
> just be pulled because it doesn't help that much, and also creates
> bias on the port randomization.

I have that patch from Vitaly Mayatskikh which does exactly this.

I keep looking at it, but I can't bring myself to apply it since
I'm not completely convinced.

  reply	other threads:[~2008-10-07 20:56 UTC|newest]

Thread overview: 134+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-06 18:50 [PATCH 3/3] Convert the UDP hash lock to RCU Corey Minyard
2008-10-06 21:22 ` Eric Dumazet
2008-10-06 21:40   ` David Miller
2008-10-06 23:08     ` Corey Minyard
2008-10-07  8:37       ` Evgeniy Polyakov
2008-10-07 14:16         ` Christoph Lameter
2008-10-07 14:29           ` Evgeniy Polyakov
2008-10-07 14:38             ` Christoph Lameter
2008-10-07 14:33           ` Paul E. McKenney
2008-10-07 14:45             ` Christoph Lameter
2008-10-07 15:07               ` Eric Dumazet
2008-10-07 15:07               ` Paul E. McKenney
2008-10-07  5:24     ` Eric Dumazet
2008-10-07  8:54       ` Benny Amorsen
2008-10-07 12:59         ` Eric Dumazet
2008-10-07 14:07           ` Stephen Hemminger
2008-10-07 20:55             ` David Miller [this message]
2008-10-07 21:20               ` Stephen Hemminger
2008-10-08 13:55               ` Eric Dumazet
2008-10-08 18:45                 ` David Miller
2008-10-28 20:37                   ` [PATCH 1/2] udp: introduce struct udp_table and multiple rwlocks Eric Dumazet
2008-10-28 21:23                     ` Christian Bell
2008-10-28 21:31                       ` Evgeniy Polyakov
2008-10-28 21:48                       ` Eric Dumazet
2008-10-28 21:28                     ` Evgeniy Polyakov
2008-10-28 20:42                   ` [PATCH 2/2] udp: RCU handling for Unicast packets Eric Dumazet
2008-10-28 22:45                     ` Eric Dumazet
2008-10-29  5:05                       ` David Miller
2008-10-29  8:23                         ` Eric Dumazet
2008-10-29  8:56                           ` David Miller
2008-10-29 10:19                             ` Eric Dumazet
2008-10-29 18:19                               ` David Miller
2008-10-29  9:04                           ` Eric Dumazet
2008-10-29  9:17                             ` David Miller
2008-10-29 13:17                             ` Corey Minyard
2008-10-29 14:36                               ` Eric Dumazet
2008-10-29 15:34                                 ` Corey Minyard
2008-10-29 16:09                                   ` Eric Dumazet
2008-10-29 16:37                                     ` Paul E. McKenney
2008-10-29 17:22                                       ` Corey Minyard
2008-10-29 17:45                                         ` Eric Dumazet
2008-10-29 18:28                                           ` Corey Minyard
2008-10-29 18:52                                             ` Paul E. McKenney
2008-10-29 20:00                                               ` Eric Dumazet
2008-10-29 20:17                                                 ` Paul E. McKenney
2008-10-29 21:29                                                   ` Corey Minyard
2008-10-29 21:57                                                     ` Eric Dumazet
2008-10-29 21:58                                                     ` Paul E. McKenney
2008-10-29 22:08                                                   ` Eric Dumazet
2008-10-30  3:22                                                     ` Corey Minyard
2008-10-30  5:50                                                       ` Eric Dumazet
2008-11-02  4:19                                                         ` David Miller
2008-10-30  5:40                                                     ` David Miller
2008-10-30  5:51                                                       ` Eric Dumazet
2008-10-30  7:04                                                         ` Eric Dumazet
2008-10-30  7:05                                                           ` David Miller
2008-10-30 15:40                                                     ` [PATCH] udp: Introduce special NULL pointers for hlist termination Eric Dumazet
2008-10-30 15:51                                                       ` Stephen Hemminger
2008-10-30 16:28                                                         ` Corey Minyard
2008-10-31 14:37                                                           ` Eric Dumazet
2008-10-31 14:55                                                             ` Pavel Emelyanov
2008-11-02  4:22                                                               ` David Miller
2008-10-30 17:12                                                         ` Eric Dumazet
2008-10-31  7:51                                                           ` David Miller
2008-10-30 16:01                                                       ` Peter Zijlstra
2008-10-31  0:14                                                       ` Keith Owens
2008-11-13 13:13                                                       ` [PATCH 0/3] net: RCU lookups for UDP, DCCP and TCP protocol Eric Dumazet
2008-11-13 17:20                                                         ` Andi Kleen
2008-11-17  3:41                                                         ` David Miller
2008-11-19 19:52                                                           ` Christoph Lameter
2008-11-13 13:14                                                       ` [PATCH 1/3] rcu: Introduce hlist_nulls variant of hlist Eric Dumazet
2008-11-13 13:29                                                         ` Peter Zijlstra
2008-11-13 13:44                                                           ` Eric Dumazet
2008-11-13 16:02                                                             ` [PATCH 4/3] rcu: documents rculist_nulls Eric Dumazet
2008-11-14 15:16                                                               ` Peter Zijlstra
2008-11-17  3:36                                                                 ` David Miller
2008-11-19 17:07                                                               ` Paul E. McKenney
2008-11-14 15:16                                                         ` [PATCH 1/3] rcu: Introduce hlist_nulls variant of hlist Peter Zijlstra
2008-11-19 17:01                                                         ` Paul E. McKenney
2008-11-19 17:53                                                           ` Eric Dumazet
2008-11-19 18:46                                                             ` Paul E. McKenney
2008-11-19 18:53                                                               ` Arnaldo Carvalho de Melo
2008-11-19 21:17                                                                 ` Paul E. McKenney
2008-11-19 20:39                                                               ` Eric Dumazet
2008-11-19 21:21                                                                 ` Paul E. McKenney
2008-11-13 13:15                                                       ` [PATCH 2/3] udp: Use hlist_nulls in UDP RCU code Eric Dumazet
2008-11-19 17:29                                                         ` Paul E. McKenney
2008-11-19 17:53                                                           ` Eric Dumazet
2008-11-13 13:15                                                       ` [PATCH 3/3] net: Convert TCP & DCCP hash tables to use RCU / hlist_nulls Eric Dumazet
2008-11-13 13:34                                                         ` Peter Zijlstra
2008-11-13 13:51                                                           ` Eric Dumazet
2008-11-13 14:08                                                             ` Christoph Lameter
2008-11-13 14:22                                                             ` Peter Zijlstra
2008-11-13 14:27                                                               ` Christoph Lameter
2008-11-19 17:53                                                         ` Paul E. McKenney
2008-11-23  9:33                                                         ` [PATCH] net: Convert TCP/DCCP listening hash tables to use RCU Eric Dumazet
2008-11-23 15:59                                                           ` Paul E. McKenney
2008-11-23 18:42                                                             ` Eric Dumazet
2008-11-23 19:17                                                               ` Paul E. McKenney
2008-11-23 20:18                                                                 ` Eric Dumazet
2008-11-23 22:33                                                                   ` Paul E. McKenney
2008-11-24  1:23                                                           ` David Miller
2008-10-30 11:04                                                 ` [PATCH 2/2] udp: RCU handling for Unicast packets Peter Zijlstra
2008-10-30 11:30                                                   ` Eric Dumazet
2008-10-30 18:25                                                     ` Paul E. McKenney
2008-10-31 16:40                                                       ` Eric Dumazet
2008-11-01  3:10                                                         ` Paul E. McKenney
2008-10-29 17:32                                       ` Eric Dumazet
2008-10-29 18:11                                         ` Paul E. McKenney
2008-10-29 18:29                                           ` David Miller
2008-10-29 18:38                                             ` Paul E. McKenney
2008-10-29 18:36                                           ` Eric Dumazet
2008-10-29 18:20                                 ` David Miller
2008-10-30 11:12                                 ` Peter Zijlstra
2008-10-30 11:29                                   ` Eric Dumazet
2008-10-28 20:37                 ` [PATCH 0/2] udp: Convert the UDP hash lock to RCU Eric Dumazet
2008-10-28 21:28                   ` Stephen Hemminger
2008-10-28 21:50                     ` Eric Dumazet
2008-10-07 16:43           ` [PATCH 3/3] " Corey Minyard
2008-10-07 18:26       ` David Miller
2008-10-08  8:35         ` Eric Dumazet
2008-10-08 16:38           ` David Miller
2008-10-07  8:31     ` Peter Zijlstra
2008-10-07 14:36       ` Paul E. McKenney
2008-10-07 18:29       ` David Miller
2008-10-06 22:07   ` Corey Minyard
2008-10-07  8:17   ` Peter Zijlstra
2008-10-07  9:24     ` Eric Dumazet
2008-10-07 14:15       ` Christoph Lameter
2008-10-07 14:38         ` Paul E. McKenney
2008-10-07 14:50         ` Eric Dumazet
2008-10-07 15:05           ` Paul E. McKenney
2008-10-07 15:09           ` Peter Zijlstra
2008-10-07 15:23           ` Christoph Lameter

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