From owner-freebsd-current@FreeBSD.ORG Thu Mar 23 14:48:12 2006 Return-Path: X-Original-To: current@freebsd.org 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 A60E616A436 for ; Thu, 23 Mar 2006 14:48:12 +0000 (UTC) (envelope-from rizzo@icir.org) Received: from xorpc.icir.org (xorpc.icir.org [192.150.187.68]) by mx1.FreeBSD.org (Postfix) with ESMTP id EF4A443D95 for ; Thu, 23 Mar 2006 14:48:05 +0000 (GMT) (envelope-from rizzo@icir.org) Received: from xorpc.icir.org (localhost [127.0.0.1]) by xorpc.icir.org (8.12.11/8.12.11) with ESMTP id k2NEm58H067367; Thu, 23 Mar 2006 06:48:05 -0800 (PST) (envelope-from rizzo@xorpc.icir.org) Received: (from rizzo@localhost) by xorpc.icir.org (8.12.11/8.12.3/Submit) id k2NEm5x4067366; Thu, 23 Mar 2006 06:48:05 -0800 (PST) (envelope-from rizzo) Date: Thu, 23 Mar 2006 06:48:05 -0800 From: Luigi Rizzo To: Scott Long Message-ID: <20060323064805.B67264@xorpc.icir.org> References: <20060322122906.A41691@xorpc.icir.org> <20060323001555.GA1811@tin.it> <20060323142518.GA1308@tin.it> <20060323063139.A67037@xorpc.icir.org> <4422B3C8.3080303@samsco.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <4422B3C8.3080303@samsco.org>; from scottl@samsco.org on Thu, Mar 23, 2006 at 07:42:16AM -0700 Cc: current@freebsd.org Subject: Re: interesting(?) data on network interrupt servicing X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Mar 2006 14:48:12 -0000 On Thu, Mar 23, 2006 at 07:42:16AM -0700, Scott Long wrote: > Luigi Rizzo wrote: > > On Thu, Mar 23, 2006 at 03:25:18PM +0100, Paolo Pisati wrote: ... > >>ok, i updated my CURRENT and rerun the tests (and while here > >>i disabled SMP): > >> > >>phk's optimization to cpu ticks calculation shaved 4k ticks, > > > > this makes it a very good candidate for MFC when 6.1 is out ? ... > I haven't been paying close enough attention, have all of the calcru > problems and other side effects been fixed from phk's work? we should ask phk. As far as i remember the only "problem" is/was that the sys/user times are computed as if the cpu were running at its max speed. But this is in fact a good thing because it is a more consistent measurement of the cost of the CPU work, which decouples us from having to take care of variable cpu speed. luigi