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From: Ulrich Drepper <drepper@redhat.com>
To: Davide Libenzi <davidel@xmailserver.org>
Cc: Eric Dumazet <dada1@cosmosbay.com>,
	Kyle Moffett <mrmacman_g4@mac.com>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: [patch 7/8] fdmap v2 - implement sys_socket2
Date: Thu, 07 Jun 2007 13:02:23 -0700	[thread overview]
Message-ID: <4668644F.80708@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0706071243090.6445@alien.or.mcafeemobile.com>

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Davide Libenzi wrote:
> Uli, would it be OK to rely only on base randomization and use a LIFO 
> instead? We have base randomization, plus LIFO does not mean strictly 
> sequential like legacy allocator, just more compatc and cache friendly.

If FIFO is slowing things down it's certainly OK to you LIFO.  If there
is wiggle room (i.e., choose between two descriptors without additional
cost) then taking advantage of this would be of advantage.  A policy
which enforces that only the last closed descriptor is not reused
immediately might might be enough.  Maybe that's too specific for
people's taste.

- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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  reply	other threads:[~2007-06-07 20:04 UTC|newest]

Thread overview: 129+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-06 22:30 [patch 7/8] fdmap v2 - implement sys_socket2 Davide Libenzi
2007-06-06 22:44 ` David Miller
2007-06-06 22:52   ` Davide Libenzi
2007-06-06 22:57     ` David Miller
2007-06-06 22:57   ` Ulrich Drepper
2007-06-06 23:02     ` David Miller
2007-06-06 22:59 ` Alan Cox
2007-06-06 22:58   ` Ulrich Drepper
2007-06-06 23:04   ` Davide Libenzi
2007-06-06 23:08     ` David Miller
2007-06-06 23:19     ` Alan Cox
2007-06-06 23:22       ` Ulrich Drepper
2007-06-07 10:04         ` Alan Cox
2007-06-07 11:59           ` Kyle Moffett
2007-06-07 13:12             ` Eric Dumazet
2007-06-07 15:51               ` Davide Libenzi
2007-06-07 19:49               ` Davide Libenzi
2007-06-07 20:02                 ` Ulrich Drepper [this message]
2007-06-07 20:05                 ` Eric Dumazet
2007-06-07 20:18                   ` Ulrich Drepper
2007-06-07 21:44                     ` Davide Libenzi
2007-06-07 22:03                       ` Ulrich Drepper
2007-06-07 22:40                         ` Davide Libenzi
2007-06-08 12:07                           ` Theodore Tso
2007-06-08 13:01                             ` Alan Cox
2007-06-08 18:11                               ` Davide Libenzi
2007-06-08 18:26                                 ` Alan Cox
2007-06-08 18:43                                   ` Ulrich Drepper
2007-06-08 18:46                                     ` Al Viro
2007-06-08 18:56                                       ` Ulrich Drepper
2007-06-08 19:07                                         ` Linus Torvalds
2007-06-08 19:21                                           ` Davide Libenzi
2007-06-09  0:03                                             ` Linus Torvalds
2007-06-09  0:13                                               ` Davide Libenzi
2007-06-09  0:36                                               ` Al Viro
2007-06-09  1:19                                                 ` Ulrich Drepper
2007-06-09  1:41                                                   ` Al Viro
2007-06-09  2:10                                                     ` Ulrich Drepper
2007-06-09 15:15                                                       ` Al Viro
2007-06-09 16:26                                                         ` Ulrich Drepper
2007-06-09 16:54                                                           ` Al Viro
2007-06-09 17:04                                                             ` Davide Libenzi
2007-06-09 17:08                                                               ` Davide Libenzi
2007-06-09 17:08                                                             ` Ulrich Drepper
2007-06-09 17:24                                                               ` Al Viro
2007-06-09 19:27                                                                 ` Kyle Moffett
2007-06-09 20:06                                                                   ` Al Viro
2007-06-09 20:21                                                                     ` Linus Torvalds
2007-06-09 20:31                                                                       ` Davide Libenzi
2007-06-09 21:41                                                                         ` Matt Mackall
2007-06-09 22:12                                                                           ` Davide Libenzi
2007-06-09 20:49                                                                       ` Al Viro
2007-06-09 21:55                                                                         ` Matt Mackall
2007-06-09 23:33                                                                         ` Linus Torvalds
2007-06-10  3:35                                                                           ` Davide Libenzi
2007-06-10  3:49                                                                             ` Davide Libenzi
2007-06-10  3:19                                                                       ` Al Viro
2007-06-10  3:48                                                                         ` Linus Torvalds
2007-06-10  4:00                                                                           ` Al Viro
2007-06-10  4:03                                                                             ` Linus Torvalds
2007-06-10  4:06                                                                               ` Al Viro
2007-06-10  4:45                                                                           ` dean gaudet
2007-06-10  5:06                                                                             ` Linus Torvalds
2007-06-10  5:46                                                                               ` Al Viro
2007-06-10 17:23                                                                                 ` Linus Torvalds
2007-06-10  6:35                                                                           ` Kari Hurtta
2007-06-10 15:21                                                                             ` Alan Cox
2007-06-10  9:14                                                                       ` Eric Dumazet
2007-06-10 15:16                                                                         ` Alan Cox
2007-06-10 18:19                                                                         ` Linus Torvalds
2007-06-10  2:40                                                                   ` Al Viro
2007-06-08 19:34                                         ` Alan Cox
2007-06-08 19:30                                     ` Alan Cox
2007-06-08 19:37                                       ` Davide Libenzi
2007-06-08 19:48                                         ` Alan Cox
2007-06-08 19:51                                           ` Davide Libenzi
2007-06-08 21:24                                             ` Alan Cox
2007-06-08 21:59                                               ` Davide Libenzi
2007-06-08 22:28                                                 ` Alan Cox
2007-06-08 22:38                                                   ` Davide Libenzi
2007-06-11  8:24                                       ` Xavier Bestel
2007-06-08 19:22                                   ` Davide Libenzi
2007-06-09  5:41                                 ` Paul Mackerras
2007-06-09 14:38                                   ` Kyle Moffett
2007-06-10  6:48                                     ` Paul Mackerras
2007-06-10 15:56                                       ` Davide Libenzi
2007-06-10 19:16                                       ` Davide Libenzi
2007-06-09 17:00                                   ` Davide Libenzi
2007-06-10  6:26                                     ` Paul Mackerras
2007-06-10  7:10                                       ` William Lee Irwin III
2007-06-10 15:52                                       ` Davide Libenzi
2007-06-08 18:07                             ` Davide Libenzi
2007-06-08 18:35                             ` Linus Torvalds
2007-06-07 21:57                   ` Davide Libenzi
2007-06-08  4:38                     ` Eric Dumazet
2007-06-08  5:20                       ` Davide Libenzi
2007-06-07 14:25           ` Ulrich Drepper
2007-06-07 17:56             ` Eric Dumazet
2007-06-07 18:03               ` Davide Libenzi
2007-06-07 18:57                 ` Eric Dumazet
2007-06-07 18:26               ` Ulrich Drepper
2007-06-07 18:39                 ` Davide Libenzi
2007-06-07 18:56                   ` Ulrich Drepper
2007-06-07 19:12                     ` Davide Libenzi
2007-06-07 20:03                   ` Andrew Morton
2007-06-08  2:55                     ` Ulrich Drepper
2007-06-08  5:16                       ` Davide Libenzi
2007-06-06 23:29       ` Davide Libenzi
2007-06-07 10:06         ` Alan Cox
2007-06-07 10:45           ` Eric Dumazet
2007-06-07 11:27             ` Alan Cox
2007-06-07 15:41           ` Davide Libenzi
2007-06-07 20:10   ` Linus Torvalds
2007-06-07 20:47     ` Eric Dumazet
2007-06-07 21:08       ` Linus Torvalds
2007-06-07 21:41         ` Davide Libenzi
2007-06-07 20:59     ` Guillaume Chazarain
2007-06-07 21:06       ` Guillaume Chazarain
2007-06-07 21:31     ` Ulrich Drepper
2007-06-07 22:22     ` Davide Libenzi
2007-06-07 23:42       ` Linus Torvalds
2007-06-08  0:04         ` Davide Libenzi
2007-06-08  0:59     ` Matt Mackall
2007-06-08  2:25       ` Linus Torvalds
2007-06-08 15:56     ` Jeff Dike
2007-06-07  0:29 ` Arnd Bergmann
2007-06-07  0:33   ` Davide Libenzi
  -- strict thread matches above, loose matches on Subject: below --
2007-06-06 22:30 [patch 1/8] fdmap v2 - fdmap core Davide Libenzi
2007-06-07  6:54 ` Eric Dumazet
2007-06-07  7:10   ` Davide Libenzi
2007-06-07 10:39     ` [patch 7/8] fdmap v2 - implement sys_socket2 Eric Dumazet
2007-06-07 15:42       ` Davide Libenzi

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