From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261415AbULQQDH (ORCPT ); Fri, 17 Dec 2004 11:03:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261442AbULQQDH (ORCPT ); Fri, 17 Dec 2004 11:03:07 -0500 Received: from 69-18-3-179.lisco.net ([69.18.3.179]:20408 "EHLO slaphack.com") by vger.kernel.org with ESMTP id S261415AbULQQCr (ORCPT ); Fri, 17 Dec 2004 11:02:47 -0500 Message-ID: <41C30325.4040604@slaphack.com> Date: Fri, 17 Dec 2004 10:02:45 -0600 From: David Masover User-Agent: Mozilla Thunderbird 0.8 (X11/20040916) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Hans Reiser CC: Peter Foldiak , reiserfs-list@namesys.com, linux-kernel@vger.kernel.org Subject: Re: file as a directory References: <200411301631.iAUGVT8h007823@laptop11.inf.utfsm.cl> <41ACA7C9.1070001@namesys.com> <1103043518.21728.159.camel@pear.st-and.ac.uk> <41BF21BC.1020809@namesys.com> <1103059622.2999.17.camel@grape.st-and.ac.uk> <41BFC1C5.1070302@slaphack.com> <1103102854.30601.12.camel@pear.st-and.ac.uk> <41C0CF3B.1030705@slaphack.com> <41C1D870.2020407@namesys.com> In-Reply-To: <41C1D870.2020407@namesys.com> X-Enigmail-Version: 0.86.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hans Reiser wrote: | David Masover wrote: | |> |> |> Speaking of which, how much speed is lost by starting up a process? |> |> The idea of caching is that running |> |> cat *; cat *; cat *; cat *; cat * |> |> is probably slower than |> |> cat * > baz; cat baz; cat baz; cat baz; cat baz; cat baz | | | Only for small files where the per file overhead of a read is significant. That's potentially a common problem, and "cat *" is an overly-simplified example. Either you force the "plugin" to say whether it wants to be cached or not, or you cache everything, because there are going to be plugins like "tar -xjp" for which caching is a HUGE increase. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iQIVAwUBQcMDJHgHNmZLgCUhAQLDMxAAiW6qcBUDKepjkGGK30yyjpia7yzbRlI5 CLSwLnRFTX+oVoqIjYgjw6Cy+Y+kPAW8nL54Vnrvn/fjd05YV6SXIql/XqX5ZY1M SXSD9LKnhxUEIH80Qcm8MdKtx0CrAPSIxVehpz7Clrv8pSClgtN2JIG1r4FsQHuB E3Hasw11bHKZmg+NgYtNn1IDcgUxz2iTmw8xSwAlPtBZz8Enc4so4VVqZPOUYg+z CTYOi84Qe8ecDGjhC6ZNvuEKsd8PgNl81MgEcJ5zcsnyCbNLpS2E8v1drsfVmXE5 8kbwelpc2q5ayEnNjeJgpIug8wH57cRWyc5KlAY733kZFTloG3LsnlWli8j9v0LT sTcOtJMWa2zj7O7LE+1z/j6xMkjlPoT/QolMsAUv0SqloOihsfF3R71uolW3mrvM VT8eQw5VUSHZyix/MqU0uDdvbOXsAoRvDL4xhdUAQv9/WbpGCNsB1PAiM693GFT2 A3VKiEcp0KMRUQZUxa5E1tBZh7WpwFvYkNTqxoN1fIDRKR6o/snAUDVb8UdTWxaW T169coH6jS/4gEQVzsZ2PvWJ8gGpV5BjXM0C/04pgVLN4e610sJsoUXsha49wpob bXgA8kw1wHp2C9fuA/NjNzyki8kzaTunkviu8ki/kaV7fEirVc0Prw78w7G2MkcC j3enAzaZHVI= =UFkt -----END PGP SIGNATURE-----