From mboxrd@z Thu Jan 1 00:00:00 1970 From: demerphq Subject: Re: question about: Facebook makes Mercurial faster than Git Date: Mon, 10 Mar 2014 12:28:37 +0100 Message-ID: References: <531D8ED9.7040305@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: Git To: Dennis Luehring X-From: git-owner@vger.kernel.org Mon Mar 10 12:29:08 2014 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WMyOG-0007s0-9J for gcvg-git-2@plane.gmane.org; Mon, 10 Mar 2014 12:29:04 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752506AbaCJL2j (ORCPT ); Mon, 10 Mar 2014 07:28:39 -0400 Received: from mail-qc0-f173.google.com ([209.85.216.173]:63196 "EHLO mail-qc0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752427AbaCJL2i (ORCPT ); Mon, 10 Mar 2014 07:28:38 -0400 Received: by mail-qc0-f173.google.com with SMTP id r5so7498032qcx.32 for ; Mon, 10 Mar 2014 04:28:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=7TD1iTmBu8dzyNP63MkPzifbyBIGaegepNBMpyl78vo=; b=lH/EwsMjNYTlAzqMv8tP3sO+05mX75Mg5HkADqe1EfDunxhvImjCdxqfi+EPMEd13B AAu9/cMriwa+VQwJMGprCH91p/gLCU21Qhs67PpThB6dthsr3oG2M0rGwqUvwPYHQ6Bz XVJI2zn2pYSyN2kvZ8JegdH3+wXFvJHcYJrMPKVOwlkrKxiSLyIduOrZvHgdD/mzStSN DES++6K82XObiFufFXJh+f7+DZZBG8tr+LZZ/u1BrubTGIyD/CzPCc+aqiksEK6OBqB3 aSlE8iby/Dzb8rdI4b2ZyYq5v5qzbdV0IBH4HCQ18w2IU50bBv11V9TXUAz0cPt0TEMI SvOg== X-Received: by 10.224.29.4 with SMTP id o4mr39819726qac.3.1394450917445; Mon, 10 Mar 2014 04:28:37 -0700 (PDT) Received: by 10.140.104.200 with HTTP; Mon, 10 Mar 2014 04:28:37 -0700 (PDT) In-Reply-To: <531D8ED9.7040305@gmx.net> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: On 10 March 2014 11:07, Dennis Luehring wrote: > according to these blog posts > > http://www.infoq.com/news/2014/01/facebook-scaling-hg > https://code.facebook.com/posts/218678814984400/scaling-mercurial-at-facebook/ > > mercurial "can" be faster then git > > but i don't found any reply from the git community if it is a real problem > or if there a ongoing (maybe git 2.0) changes to compete better in this case They mailed the list about performance issues in git. From what I saw there was relatively little feedback. I had the impression, and I would not be surprised if they had the impression that the git development community is relatively unconcerned about performance issues on larger repositories. There have been other reports, which are difficult to keep track of without a bug tracking system, but the ones I know of are: Poor performance of git status with large number of excluded files and large repositories. Poor performance, and breakage, on repositories with very large numbers of files in them. (Rebase for instance will break if you rebase a commit that contains a *lot* of files.) Poor performance in protocol layer (and other places) with repos with large numbers of refs. (Maybe this is fixed, not sure.) cheers, Yves -- perl -Mre=debug -e "/just|another|perl|hacker/"