From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Torvalds Subject: Re: newbie questions about git design and features (some wrt hg) Date: Tue, 30 Jan 2007 11:37:33 -0800 (PST) Message-ID: References: <3c6c07c20701300820l42cfc8dbsb80393fc1469f667@mail.gmail.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: git@vger.kernel.org To: Mike Coleman X-From: git-owner@vger.kernel.org Tue Jan 30 20:38:17 2007 Return-path: Envelope-to: gcvg-git@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by lo.gmane.org with esmtp (Exim 4.50) id 1HBynw-0001j7-Rv for gcvg-git@gmane.org; Tue, 30 Jan 2007 20:38:09 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751766AbXA3Thx (ORCPT ); Tue, 30 Jan 2007 14:37:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751770AbXA3Thx (ORCPT ); Tue, 30 Jan 2007 14:37:53 -0500 Received: from smtp.osdl.org ([65.172.181.24]:44574 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751769AbXA3Thw (ORCPT ); Tue, 30 Jan 2007 14:37:52 -0500 Received: from shell0.pdx.osdl.net (fw.osdl.org [65.172.181.6]) by smtp.osdl.org (8.12.8/8.12.8) with ESMTP id l0UJbY1m020555 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Tue, 30 Jan 2007 11:37:34 -0800 Received: from localhost (shell0.pdx.osdl.net [10.9.0.31]) by shell0.pdx.osdl.net (8.13.1/8.11.6) with ESMTP id l0UJbXB3026777; Tue, 30 Jan 2007 11:37:34 -0800 In-Reply-To: X-Spam-Status: No, hits=-0.45 required=5 tests=AWL X-Spam-Checker-Version: SpamAssassin 2.63-osdl_revision__1.111__ X-MIMEDefang-Filter: osdl$Revision: 1.172 $ X-Scanned-By: MIMEDefang 2.36 Sender: git-owner@vger.kernel.org Precedence: bulk X-Mailing-List: git@vger.kernel.org Archived-At: On Tue, 30 Jan 2007, Linus Torvalds wrote: > > We had this particular performance "anomaly" be discussed just the other > week. People seem to be so used to the "file ID" mentality that has its > roots in RCS etc, that they expect "git log " to somehow be > faster than "git log". In git, that's simply not true. History is *always* > seen as a "full repository history". There simply isn't anything else. Side note: some people have talked about changing this by generating some kind of per-filename cache to make logging ops have an "accelerated" mode for the trivial cases. So maybe git at some future date will have a special-case for a single filename, but that's definitely not the case today. Linus