From owner-freebsd-current@FreeBSD.ORG Mon Aug 25 12:59:46 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8AC2116A4BF for ; Mon, 25 Aug 2003 12:59:46 -0700 (PDT) Received: from dragon.nuxi.com (trang.nuxi.com [66.93.134.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id E0CA743FBF for ; Mon, 25 Aug 2003 12:59:45 -0700 (PDT) (envelope-from obrien@NUXI.com) Received: from dragon.nuxi.com (obrien@localhost [127.0.0.1]) by dragon.nuxi.com (8.12.9/8.12.9) with ESMTP id h7PJxiQX064479 for ; Mon, 25 Aug 2003 12:59:44 -0700 (PDT) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.12.9/8.12.9/Submit) id h7PJxixx064478 for current@freebsd.org; Mon, 25 Aug 2003 12:59:44 -0700 (PDT) Date: Mon, 25 Aug 2003 12:59:43 -0700 From: "David O'Brien" To: current@freebsd.org Message-ID: <20030825195943.GA64423@dragon.nuxi.com> Mail-Followup-To: David O'Brien , current@freebsd.org References: <3F4A1CE2.6080806@freebsd.org> <20030825164907.GA17503@dragon.nuxi.com> <3F4A43EA.9090500@tcoip.com.br> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3F4A43EA.9090500@tcoip.com.br> User-Agent: Mutt/1.4.1i X-Operating-System: FreeBSD 5.1-CURRENT Organization: The NUXI BSD Group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 Subject: Re: HTT on current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: current@freebsd.org List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Aug 2003 19:59:46 -0000 On Mon, Aug 25, 2003 at 02:14:18PM -0300, Daniel C. Sobral wrote: > >I've heard this several times and don't doubt it, but it would be nice to > >know more about the issue. What type of cases? What benchmarks have > >been run showing this? > > Well, I haven't actually seen any case where there was a performance > gain instead of degradation. I've seen MS-Windows DCC apps (not optimized specifically for HT) get significant speedup from HT. Unfortnately those are the favored benchmarks of Tom's Hardware et.al. so it is hard to get a truer sense of the benefits (or pesimization) of HT.