Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262058AbVDLFrp (ORCPT ); Tue, 12 Apr 2005 01:47:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261976AbVDLFrP (ORCPT ); Tue, 12 Apr 2005 01:47:15 -0400 Received: from orb.pobox.com ([207.8.226.5]:48107 "EHLO orb.pobox.com") by vger.kernel.org with ESMTP id S262068AbVDLFmO (ORCPT ); Tue, 12 Apr 2005 01:42:14 -0400 Date: Mon, 11 Apr 2005 22:42:03 -0700 From: "Barry K. Nathan" To: Ingo Molnar Cc: Linus Torvalds , Paul Jackson , pasky@ucw.cz, rddunlap@osdl.org, ross@jose.lug.udel.edu, linux-kernel@vger.kernel.org, git@vger.kernel.org Subject: Re: [rfc] git: combo-blobs Message-ID: <20050412054203.GA8008@ip68-4-98-123.oc.oc.cox.net> References: <20050411113523.GA19256@elte.hu> <20050411074552.4e2e656b.pj@engr.sgi.com> <20050411151204.GA5562@elte.hu> <20050411153905.GA7284@elte.hu> <20050411163358.GA9696@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050411163358.GA9696@elte.hu> User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1093 Lines: 21 On Mon, Apr 11, 2005 at 06:33:58PM +0200, Ingo Molnar wrote: > ok. Meanwhile i found another counter-argument: the average committed > file size is 36K, which with gzip -9 would compress down to roughly 8K, > with the commit message being another block. That's 2+1 blocks used per > commit, while with deltas one could at most cut this down to 1+1+1 > blocks - just as much space! So we would be almost even with the more > complex delta approach, just by increasing the default compression ratio > from 6 to 9. (but even with the default we are not that bad.) I think you forgot about reiserfs/reiser4 tails. (At least, I *think* reiser4 has tails. I know reiserfs 3.x does.) BTW, I happen to agree completely with Linus on this issue, but I still figured I'd mention this for the sake of completeness. -Barry K. Nathan - 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/