From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Stephen R. van den Berg" Subject: Re: [PATCHv5 00/14] git notes Date: Thu, 10 Sep 2009 08:23:11 +0200 Message-ID: <20090910062311.GA27466@cuci.nl> References: <1252376822-6138-1-git-send-email-johan@herland.net> <200909081436.30761.johan@herland.net> <200909090046.45213.johan@herland.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Johannes Schindelin , git@vger.kernel.org, Junio C Hamano , trast@student.ethz.ch, tavestbo@trolltech.com, git@drmicha.warpmail.net, chriscool@tuxfamily.org, spearce@spearce.org To: Johan Herland X-From: git-owner@vger.kernel.org Thu Sep 10 08:30:58 2009 Return-path: Envelope-to: gcvg-git-2@lo.gmane.org Received: from vger.kernel.org ([209.132.176.167]) by lo.gmane.org with esmtp (Exim 4.50) id 1MldBF-0001HX-Ma for gcvg-git-2@lo.gmane.org; Thu, 10 Sep 2009 08:30:54 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755149AbZIJGaR (ORCPT ); Thu, 10 Sep 2009 02:30:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755144AbZIJGaO (ORCPT ); Thu, 10 Sep 2009 02:30:14 -0400 Received: from aristoteles.cuci.nl ([212.125.128.18]:43228 "EHLO aristoteles.cuci.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755140AbZIJGaK (ORCPT ); Thu, 10 Sep 2009 02:30:10 -0400 X-Greylist: delayed 421 seconds by postgrey-1.27 at vger.kernel.org; Thu, 10 Sep 2009 02:30:10 EDT Received: by aristoteles.cuci.nl (Postfix, from userid 500) id 377E65420; Thu, 10 Sep 2009 08:23:11 +0200 (CEST) Content-Disposition: inline In-Reply-To: <200909090046.45213.johan@herland.net> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Johan Herland wrote: >I was, however, naive enough to assume that when git.git decided on using >2/38 fanout for its loose objects, then some performance-related thoughts >went into that decision. If there are indications that multiple-of-2-type I presume that that choice was based on the fact that on a typical filesystem (e.g. ext2 old-style) without directory indexing, the sort-of optimal fanout should aim for no more than 100-200 directory entries per directory. -- Sincerely, Stephen R. van den Berg. Mommy, what happens to your files when you die?