From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12432 invoked by alias); 13 Oct 2011 22:08:15 -0000 Received: (qmail 12278 invoked by uid 22791); 13 Oct 2011 22:08:15 -0000 X-SWARE-Spam-Status: No, hits=-1.8 required=5.0 tests=AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from relay1.mentorg.com (HELO relay1.mentorg.com) (192.94.38.131) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 13 Oct 2011 22:08:02 +0000 Received: from nat-ies.mentorg.com ([192.94.31.2] helo=EU1-MAIL.mgc.mentorg.com) by relay1.mentorg.com with esmtp id 1RETRZ-0007V8-Ab from joseph_myers@mentor.com ; Thu, 13 Oct 2011 15:08:01 -0700 Received: from digraph.polyomino.org.uk ([172.16.63.104]) by EU1-MAIL.mgc.mentorg.com with Microsoft SMTPSVC(6.0.3790.1830); Thu, 13 Oct 2011 23:07:59 +0100 Received: from jsm28 (helo=localhost) by digraph.polyomino.org.uk with local-esmtp (Exim 4.74) (envelope-from ) id 1RETRW-0007gF-Hg; Thu, 13 Oct 2011 22:07:58 +0000 Date: Thu, 13 Oct 2011 22:08:00 -0000 From: "Joseph S. Myers" To: Jan Kratochvil cc: Phil Muldoon , gdb@sourceware.org Subject: Re: GIT and CVS In-Reply-To: <20111013215927.GA13931@host1.jankratochvil.net> Message-ID: References: <20111013215927.GA13931@host1.jankratochvil.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2011-10/txt/msg00087.txt.bz2 On Thu, 13 Oct 2011, Jan Kratochvil wrote: > You cannot count the first operation, before ./.git gets cached. The first > read is deficiency of kernel filesystem, pre-read and/or no SSD on your system. The whole point of my timings was to time uncached reads and compare them to uncached reads of ChangeLogs. I'm considering the user looking at lots of different trees from time to time, not spending all their time in an FSF GDB tree where they might have .git cached. -- Joseph S. Myers joseph@codesourcery.com