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From: Evgeniy Polyakov <zbr@ioremap.net>
To: Jarek Poplawski <jarkao2@gmail.com>
Cc: David Miller <davem@davemloft.net>,
	herbert@gondor.apana.org.au, w@1wt.eu, dada1@cosmosbay.com,
	ben@zeus.com, mingo@elte.hu, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, jens.axboe@oracle.com
Subject: Re: [PATCH v2] tcp: splice as many packets as possible at once
Date: Tue, 20 Jan 2009 13:31:22 +0300	[thread overview]
Message-ID: <20090120103122.GC9167@ioremap.net> (raw)
In-Reply-To: <20090120102053.GA17004@ff.dom.local>

On Tue, Jan 20, 2009 at 10:20:53AM +0000, Jarek Poplawski (jarkao2@gmail.com) wrote:
> Good question! Alas I can't check this soon, but if it's really like
> this, of course this needs some better idea and rework. (BTW, I'd like
> to prevent here as much as possible some strange activities like 1
> byte (payload) packets getting full pages without any accounting.)

I believe approach to meet all our goals is to have own network memory
allocator, so that each skb could have its payload in the fragments, we
would not suffer from the heavy fragmentation and power-of-two overhead
for the larger MTUs, have a reserve for the OOM condition and generally
do not depend on the main system behaviour.

I will resurrect to some point my network allocator to check how things
go in the modern environment, if no one will beat this idea first :)

1. Network (tree) allocator
http://www.ioremap.net/projects/nta

-- 
	Evgeniy Polyakov

  reply	other threads:[~2009-01-20 10:31 UTC|newest]

Thread overview: 190+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-08 17:30 [PATCH] tcp: splice as many packets as possible at once Willy Tarreau
2009-01-08 19:44 ` Jens Axboe
2009-01-08 22:03   ` Willy Tarreau
2009-01-08 21:50 ` Ben Mansell
2009-01-08 21:55   ` David Miller
2009-01-08 22:20     ` Willy Tarreau
2009-01-13 23:08       ` David Miller
2009-01-09  6:47     ` Eric Dumazet
2009-01-09  7:04       ` Willy Tarreau
2009-01-09  7:28         ` Eric Dumazet
2009-01-09  7:42           ` Willy Tarreau
2009-01-13 23:27           ` David Miller
2009-01-13 23:35             ` Eric Dumazet
2009-01-09 15:42       ` Eric Dumazet
2009-01-09 17:57         ` Eric Dumazet
2009-01-09 18:54         ` Willy Tarreau
2009-01-09 20:51           ` Eric Dumazet
2009-01-09 21:24             ` Willy Tarreau
2009-01-09 22:02               ` Eric Dumazet
2009-01-09 22:09                 ` Willy Tarreau
2009-01-09 22:07               ` Willy Tarreau
2009-01-09 22:12                 ` Eric Dumazet
2009-01-09 22:17                   ` Willy Tarreau
2009-01-09 22:42                     ` Evgeniy Polyakov
2009-01-09 22:50                       ` Willy Tarreau
2009-01-09 23:01                         ` Evgeniy Polyakov
2009-01-09 23:06                           ` Willy Tarreau
2009-01-10  7:40                       ` Eric Dumazet
2009-01-11 12:58                         ` Evgeniy Polyakov
2009-01-11 13:14                           ` Eric Dumazet
2009-01-11 13:35                             ` Evgeniy Polyakov
2009-01-11 16:00                               ` Eric Dumazet
2009-01-11 16:05                                 ` Evgeniy Polyakov
2009-01-14  0:07                                   ` David Miller
2009-01-14  0:13                                     ` Evgeniy Polyakov
2009-01-14  0:16                                       ` David Miller
2009-01-14  0:22                                         ` Evgeniy Polyakov
2009-01-14  0:37                                           ` David Miller
2009-01-14  3:51                                             ` Herbert Xu
2009-01-14  4:25                                               ` David Miller
2009-01-14  7:27                                               ` David Miller
2009-01-14  8:26                                                 ` Herbert Xu
2009-01-14  8:53                                                   ` Jarek Poplawski
2009-01-14  9:29                                                     ` David Miller
2009-01-14  9:42                                                       ` Jarek Poplawski
2009-01-14 10:06                                                         ` David Miller
2009-01-14 10:47                                                           ` Jarek Poplawski
2009-01-14 11:29                                                             ` Herbert Xu
2009-01-14 11:40                                                               ` Jarek Poplawski
2009-01-14 11:45                                                                 ` Jarek Poplawski
2009-01-14  9:54                                                       ` Jarek Poplawski
2009-01-14 10:01                                                         ` Willy Tarreau
2009-01-14 12:06                                                         ` Jarek Poplawski
2009-01-14 12:15                                                         ` Jarek Poplawski
2009-01-14 11:28                                                       ` Herbert Xu
2009-01-15 23:03                                                       ` Willy Tarreau
2009-01-15 23:19                                                         ` David Miller
2009-01-15 23:19                                                         ` Herbert Xu
2009-01-15 23:26                                                           ` David Miller
2009-01-15 23:32                                                             ` Herbert Xu
2009-01-15 23:34                                                               ` David Miller
2009-01-15 23:42                                                                 ` Willy Tarreau
2009-01-15 23:44                                                                   ` Willy Tarreau
2009-01-15 23:54                                                                     ` David Miller
2009-01-19  0:42                                                                       ` Willy Tarreau
2009-01-19  3:08                                                                         ` Herbert Xu
2009-01-19  3:27                                                                           ` David Miller
2009-01-19  6:14                                                                             ` Willy Tarreau
2009-01-19  6:19                                                                               ` David Miller
2009-01-19  6:45                                                                                 ` Willy Tarreau
2009-01-19 10:19                                                                                 ` Herbert Xu
2009-01-19 20:59                                                                                   ` David Miller
2009-01-19 21:24                                                                                     ` Herbert Xu
2009-01-25 21:03                                                                                     ` Willy Tarreau
2009-01-26  7:59                                                                                       ` Jarek Poplawski
2009-01-26  8:12                                                                                         ` Willy Tarreau
2009-01-19  8:40                                                                               ` Jarek Poplawski
2009-01-19  3:28                                                                         ` David Miller
2009-01-19  6:11                                                                           ` Willy Tarreau
2009-01-24 21:23                                                                           ` Willy Tarreau
2009-01-20 12:01                                                                         ` Ben Mansell
2009-01-20 12:11                                                                           ` Evgeniy Polyakov
2009-01-20 13:43                                                                             ` Ben Mansell
2009-01-20 14:06                                                                               ` Jarek Poplawski
2009-01-16  6:51                                                                     ` Jarek Poplawski
2009-01-19  6:08                                                                       ` David Miller
2009-01-19  6:16                                                                 ` David Miller
2009-01-19 10:20                                                                   ` Herbert Xu
2009-01-20  8:37                                                             ` Jarek Poplawski
2009-01-20  9:33                                                               ` [PATCH v2] " Jarek Poplawski
2009-01-20 10:00                                                                 ` Evgeniy Polyakov
2009-01-20 10:20                                                                   ` Jarek Poplawski
2009-01-20 10:31                                                                     ` Evgeniy Polyakov [this message]
2009-01-20 11:01                                                                       ` Jarek Poplawski
2009-01-20 17:16                                                                         ` David Miller
2009-01-21  9:54                                                                           ` Jarek Poplawski
2009-01-22  9:04                                                                           ` [PATCH v3] " Jarek Poplawski
2009-01-26  5:22                                                                             ` David Miller
2009-01-27  7:11                                                                               ` Herbert Xu
2009-01-27  7:54                                                                                 ` Jarek Poplawski
2009-01-27 10:09                                                                                   ` Herbert Xu
2009-01-27 10:35                                                                                     ` Jarek Poplawski
2009-01-27 10:57                                                                                       ` Jarek Poplawski
2009-01-27 11:48                                                                                       ` Herbert Xu
2009-01-27 12:16                                                                                         ` Jarek Poplawski
2009-01-27 12:31                                                                                           ` Jarek Poplawski
2009-01-27 17:06                                                                                             ` David Miller
2009-01-28  8:10                                                                                               ` Jarek Poplawski
2009-02-01  8:41                                                                                 ` David Miller
2009-01-26  8:20                                                                       ` [PATCH v2] " Jarek Poplawski
2009-01-26 21:21                                                                         ` Evgeniy Polyakov
2009-01-27  6:10                                                                           ` David Miller
2009-01-27  7:40                                                                             ` Jarek Poplawski
2009-01-30 21:42                                                                               ` David Miller
2009-01-30 21:59                                                                                 ` Willy Tarreau
2009-01-30 22:03                                                                                   ` David Miller
2009-01-30 22:13                                                                                     ` Willy Tarreau
2009-01-30 22:15                                                                                       ` David Miller
2009-01-30 22:16                                                                                 ` Herbert Xu
2009-02-02  8:08                                                                                   ` Jarek Poplawski
2009-02-02  8:18                                                                                     ` David Miller
2009-02-02  8:43                                                                                       ` Jarek Poplawski
2009-02-03  7:50                                                                                         ` David Miller
2009-02-03  9:41                                                                                           ` Jarek Poplawski
2009-02-03 11:10                                                                                             ` Evgeniy Polyakov
2009-02-03 11:24                                                                                               ` Herbert Xu
2009-02-03 11:49                                                                                                 ` Evgeniy Polyakov
2009-02-03 11:53                                                                                                   ` Herbert Xu
2009-02-03 12:07                                                                                                     ` Evgeniy Polyakov
2009-02-03 12:12                                                                                                       ` Herbert Xu
2009-02-03 12:18                                                                                                         ` Evgeniy Polyakov
2009-02-03 12:25                                                                                                           ` Willy Tarreau
2009-02-03 12:28                                                                                                             ` Herbert Xu
2009-02-04  0:47                                                                                                             ` David Miller
2009-02-04  6:19                                                                                                               ` Willy Tarreau
2009-02-04  8:12                                                                                                                 ` Evgeniy Polyakov
2009-02-04  8:54                                                                                                                   ` Willy Tarreau
2009-02-04  8:59                                                                                                                     ` Herbert Xu
2009-02-04  9:01                                                                                                                       ` David Miller
2009-02-04  9:12                                                                                                                         ` Willy Tarreau
2009-02-04  9:15                                                                                                                           ` David Miller
2009-02-04 19:19                                                                                                                           ` Roland Dreier
2009-02-04 19:28                                                                                                                             ` Willy Tarreau
2009-02-04 19:48                                                                                                                               ` Jarek Poplawski
2009-02-05  8:32                                                                                                                           ` Bill Fink
2009-02-04  9:12                                                                                                                 ` David Miller
2009-02-03 12:27                                                                                                           ` Herbert Xu
2009-02-03 13:05                                                                                                   ` david
2009-02-03 12:12                                                                                                     ` Evgeniy Polyakov
2009-02-03 12:18                                                                                                       ` Herbert Xu
2009-02-03 12:30                                                                                                         ` Evgeniy Polyakov
2009-02-03 12:33                                                                                                           ` Herbert Xu
2009-02-03 12:33                                                                                                         ` Nick Piggin
2009-02-04  0:46                                                                                                 ` David Miller
2009-02-04  9:41                                                                                                   ` Benny Amorsen
2009-02-04 12:01                                                                                                     ` Herbert Xu
2009-02-03 12:36                                                                                               ` Jarek Poplawski
2009-02-03 13:06                                                                                                 ` Evgeniy Polyakov
2009-02-03 13:25                                                                                                   ` Jarek Poplawski
2009-02-03 14:20                                                                                                     ` Evgeniy Polyakov
2009-02-04  0:46                                                                                               ` David Miller
2009-02-04  8:08                                                                                                 ` Evgeniy Polyakov
2009-02-04  9:23                                                                                                   ` Nick Piggin
2009-02-04  7:56                                                                                             ` Jarek Poplawski
2009-02-06  7:52                                                                                             ` David Miller
2009-02-06  8:09                                                                                               ` Herbert Xu
2009-02-06  9:10                                                                                               ` Jarek Poplawski
2009-02-06  9:17                                                                                                 ` David Miller
2009-02-06  9:42                                                                                                   ` Jarek Poplawski
2009-02-06  9:49                                                                                                     ` David Miller
2009-02-06  9:23                                                                                                 ` Herbert Xu
2009-02-06  9:51                                                                                                   ` Jarek Poplawski
2009-02-06 10:28                                                                                                     ` Herbert Xu
2009-02-06 10:58                                                                                                       ` Jarek Poplawski
2009-02-06 11:10                                                                                                         ` Willy Tarreau
2009-02-06 11:47                                                                                                           ` Jarek Poplawski
2009-02-06 18:59                                                                                               ` Jarek Poplawski
2009-02-03 11:38                                                                                 ` Nick Piggin
2009-01-27 18:42                                                                             ` David Miller
2009-01-15 23:32                                                           ` [PATCH] " Willy Tarreau
2009-01-15 23:35                                                             ` David Miller
2009-01-14  0:51                                         ` Herbert Xu
2009-01-14  1:24                                           ` David Miller
2009-01-09 22:45                     ` Eric Dumazet
2009-01-09 22:53                       ` Willy Tarreau
2009-01-09 23:34                         ` Eric Dumazet
2009-01-13  5:45                           ` David Miller
2009-01-14  0:05                           ` David Miller
2009-01-13 23:31         ` David Miller
2009-01-13 23:26       ` David Miller

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