From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759044AbYESIYx (ORCPT ); Mon, 19 May 2008 04:24:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755516AbYESIYc (ORCPT ); Mon, 19 May 2008 04:24:32 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:59339 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755346AbYESIYa (ORCPT ); Mon, 19 May 2008 04:24:30 -0400 Message-ID: <483138AC.9080504@cn.fujitsu.com> Date: Mon, 19 May 2008 16:22:04 +0800 From: Wang Chen User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) MIME-Version: 1.0 To: Linus Torvalds CC: Linux Kernel Mailing List Subject: Re: Linux 2.6.26-rc3 References: In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus Torvalds said the following on 2008-5-19 6:12: > So because of that event, I looked at some of the statistics of the BK > timeframe and the git timeframe. The most striking difference has nothing > to do with git or BK (the switch-over timing was just the reason I decided > to take a look), but with the fact that we're not just continuing to > develop, but we're developing faster and with more people. > > So during the three years 2002->2005, we had 63428 commits, attributed to > 1560 different authors (caveat: misspellings etc will mean that some > people get counted more than ones). During the last three years, we've had > 96885 attributed to 4068 distinct authors (with the same caveat, > obviously). > > I didn't do a lot of per-commit statistics yet, but from the little I've > done it also seems like we've gotten increasingly better at doing small > commits (which is probably one of the reasons we have a larger number of > them, but also why we have more authors - small commits is how people get > into doing kernel development). > > [ But part of it is also because we're better at authorship tracking: the > BK history has 6000+ patches attributed to Andrew, and a number of them > have a "From: xyz" in them, but my statistics only looked at who got > attributed in the SCM logs. Our patch extraction tools have also gotten > better over the years.. ] > > I'll see if I can make some interesting statistics about just how > development has changed over the last three years, but no promises. The > actual exact "same amount of time" time is coming up in another month or > so. > Linus, I've made an analysis from raw data of git-log. Very similar to what Jonathan Corbet has done. But hope it can give us some useful information. http://remword.com/kps_result/ --WCN