Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261351AbVECD3e (ORCPT ); Mon, 2 May 2005 23:29:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261352AbVECD3d (ORCPT ); Mon, 2 May 2005 23:29:33 -0400 Received: from waste.org ([216.27.176.166]:60105 "EHLO waste.org") by vger.kernel.org with ESMTP id S261351AbVECD32 (ORCPT ); Mon, 2 May 2005 23:29:28 -0400 Date: Mon, 2 May 2005 20:29:16 -0700 From: Matt Mackall To: Linus Torvalds Cc: Bill Davidsen , Morten Welinder , Sean , linux-kernel , git@vger.kernel.org Subject: Re: Mercurial 0.4b vs git patchbomb benchmark Message-ID: <20050503032916.GE22038@waste.org> References: <20050429165232.GV21897@waste.org> <427650E7.2000802@tmr.com> <20050502223002.GP21897@waste.org> <20050503000011.GA22038@waste.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1128 Lines: 30 On Mon, May 02, 2005 at 07:48:29PM -0700, Linus Torvalds wrote: > > > On Mon, 2 May 2005, Matt Mackall wrote: > > > > Umm.. I am _not_ calculating the SHA of the delta itself. That'd be > > silly. > > It's not silly. The delta is not the object I care about and its representation is arbitrary. In fact different branches will store different deltas depending on how their DAGs get topologically sorted. The object I care about is the original text, so that's the hash I store. > In other words, you need to hash the metadata too. Otherwise how do you > consistency-check the _collection_ of files? Well naturally, I hash the metadata too. For every change, there's a toplevel changeset hash that is the hash of the entire project state at that time. And it's all signable and so on. Just like git and just like Monotone. -- Mathematics is the supreme nostalgia of our time. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/