From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.176.0/21 X-Spam-Status: No, score=-3.5 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MSGID_FROM_MTA_HEADER,RP_MATCHES_RCVD shortcircuit=no autolearn=ham autolearn_force=no version=3.4.0 From: Linus Torvalds Subject: Re: cloning the kernel - why long time in "Resolving 313037 deltas" Date: Mon, 18 Dec 2006 22:51:19 -0800 (PST) Message-ID: References: <86y7p57y05.fsf@blue.stonehenge.com> <86r6uw9azn.fsf@blue.stonehenge.com> <86hcvs984c.fsf@blue.stonehenge.com> <8664c896xv.fsf@blue.stonehenge.com> <20061219051108.GA29405@thunk.org> <20061219063930.GA2511@spearce.org> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII NNTP-Posting-Date: Tue, 19 Dec 2006 06:51:44 +0000 (UTC) Cc: Theodore Tso , Nicolas Pitre , "Randal L. Schwartz" , git@vger.kernel.org Return-path: Envelope-to: gcvg-git@gmane.org In-Reply-To: <20061219063930.GA2511@spearce.org> X-MIMEDefang-Filter: osdl$Revision: 1.163 $ X-Scanned-By: MIMEDefang 2.36 Precedence: bulk X-Mailing-List: git@vger.kernel.org Archived-At: Received: from vger.kernel.org ([209.132.176.167]) by ciao.gmane.org with esmtp (Exim 4.43) id 1GwYp6-0005Sc-91 for gcvg-git@gmane.org; Tue, 19 Dec 2006 07:51:36 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752928AbWLSGvd (ORCPT ); Tue, 19 Dec 2006 01:51:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752948AbWLSGvd (ORCPT ); Tue, 19 Dec 2006 01:51:33 -0500 Received: from smtp.osdl.org ([65.172.181.25]:59035 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752903AbWLSGvc (ORCPT ); Tue, 19 Dec 2006 01:51:32 -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 kBJ6pLID018791 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Mon, 18 Dec 2006 22:51:21 -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 kBJ6pJb3025434; Mon, 18 Dec 2006 22:51:20 -0800 To: Shawn Pearce Sender: git-owner@vger.kernel.org On Tue, 19 Dec 2006, Shawn Pearce wrote: > > Why isn't git-index-pack doing the same? Is there some hidden glitch > in some OS somewhere that has a problem with overmapping a file and > appending into it via write()? I've done that on Mac OS X, Linux, > BSDi, Solaris... never had a problem. It works on modern systems, but at least old HPUX versions had non-coherent mmap() and write(), and POSIX does not guarantee it. And if you ever want to port to Windows, I don't think you should do it. Anyway, try the pread() version first, see if that fixes the OS X problem.