From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Torvalds Subject: Re: [ANNOUNCE] Example Cogito Addon - cogito-bundle Date: Wed, 18 Oct 2006 14:55:47 -0700 (PDT) Message-ID: References: <20061018053647.GA3507@coredump.intra.peff.net> <20061018185225.GU20017@pasky.or.cz> <20061018185907.GV20017@pasky.or.cz> <7vy7rd1m4q.fsf@assigned-by-dhcp.cox.net> <20061018191834.GA18829@spearce.org> <20061018204626.GA19194@spearce.org> <20061018213225.GD19194@spearce.org> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: Nicolas Pitre , Junio C Hamano , git@vger.kernel.org X-From: git-owner@vger.kernel.org Wed Oct 18 23:56:21 2006 Return-path: Envelope-to: gcvg-git@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by ciao.gmane.org with esmtp (Exim 4.43) id 1GaJOS-0004zT-Ru for gcvg-git@gmane.org; Wed, 18 Oct 2006 23:56:09 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423050AbWJRV4G (ORCPT ); Wed, 18 Oct 2006 17:56:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423038AbWJRV4F (ORCPT ); Wed, 18 Oct 2006 17:56:05 -0400 Received: from smtp.osdl.org ([65.172.181.4]:57803 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1423050AbWJRV4D (ORCPT ); Wed, 18 Oct 2006 17:56:03 -0400 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 k9ILtmaX018872 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Wed, 18 Oct 2006 14:55:49 -0700 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 k9ILtlFf019845; Wed, 18 Oct 2006 14:55:48 -0700 To: Shawn Pearce In-Reply-To: <20061018213225.GD19194@spearce.org> X-Spam-Status: No, hits=-0.97 required=5 tests=AWL,OSDL_HEADER_SUBJECT_BRACKETED X-Spam-Checker-Version: SpamAssassin 2.63-osdl_revision__1.95__ X-MIMEDefang-Filter: osdl$Revision: 1.155 $ X-Scanned-By: MIMEDefang 2.36 Sender: git-owner@vger.kernel.org Precedence: bulk X-Mailing-List: git@vger.kernel.org Archived-At: On Wed, 18 Oct 2006, Shawn Pearce wrote: > > My comment that you quoted was about mmap'ing the pack files in > large chunks (around 64-128 MiB at a time, but configurable from > .git/config) rather than as an entire massive mapping. Sure. I agree that we should do that, if only because it's clearly getting hard to handle large pack-files on a 32-bit architecture. You just seemed to say that in the _context_ of wanting to support having multiple pack-files open (in order to allow deltas to refer to things outside their own pack-file). I just wanted to head that particular idea off at the pass. I think thin packs have been a good idea, and they certainly cut the amount of data sent over the network down by a large amount (much more than 50%), so I think thin packs are a great idea. Just _not_ when indexed. So I don't object to mmap windows at all. I object to them only in the context of "they would allow us to use deltas between two different packs" discussion ;) Linus