From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Eric S. Raymond" Subject: Re: Millisecond precision in timestamps? Date: Tue, 27 Nov 2012 22:23:37 -0500 Organization: Eric Conspiracy Secret Labs Message-ID: <20121128032337.GB1669@thyrsus.com> References: <20121127204828.577264065F@snark.thyrsus.com> <7vzk22lmz9.fsf@alter.siamese.dyndns.org> <20121127230419.GA26080@thyrsus.com> <20121128001231.GA27971@thyrsus.com> <20121128011750.GA23498@sigill.intra.peff.net> Reply-To: esr@thyrsus.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Shawn Pearce , Felipe Contreras , Junio C Hamano , git To: Jeff King X-From: git-owner@vger.kernel.org Wed Nov 28 04:24:04 2012 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 1TdYFn-0005Kk-04 for gcvg-git-2@plane.gmane.org; Wed, 28 Nov 2012 04:24:03 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752294Ab2K1DXr (ORCPT ); Tue, 27 Nov 2012 22:23:47 -0500 Received: from static-71-162-243-5.phlapa.fios.verizon.net ([71.162.243.5]:58917 "EHLO snark.thyrsus.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751326Ab2K1DXr (ORCPT ); Tue, 27 Nov 2012 22:23:47 -0500 Received: by snark.thyrsus.com (Postfix, from userid 1000) id 903B640661; Tue, 27 Nov 2012 22:23:37 -0500 (EST) Content-Disposition: inline In-Reply-To: <20121128011750.GA23498@sigill.intra.peff.net> X-Eric-Conspiracy: There is no conspiracy User-Agent: Mutt/1.5.21 (2010-09-15) Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Jeff King : > But I really wonder if anybody actually cares about adding sub-second > timestamp support, or if it is merely "because SVN has it". There's actually one possible other reason to care. 1-second granularity isn't quite fine enough to guarantee that a (committer, timestamp) pair is a unique key. 1 microsecond granularity would be. -- Eric S. Raymond