Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 21 Aug 2002 10:05:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 21 Aug 2002 10:05:43 -0400 Received: from pc2-cwma1-5-cust12.swa.cable.ntl.com ([80.5.121.12]:41966 "EHLO irongate.swansea.linux.org.uk") by vger.kernel.org with ESMTP id ; Wed, 21 Aug 2002 10:05:42 -0400 Subject: Re: [PATCH] tsc-disable_B9 From: Alan Cox To: Andrea Arcangeli Cc: Mikael Pettersson , john stultz , Marcelo Tosatti , lkml , Leah Cunningham , wilhelm.nuesser@sap.com, paramjit@us.ibm.com, msw@redhat.com In-Reply-To: <20020821131223.GB1117@dualathlon.random> References: <1028771615.22918.188.camel@cog> <1028812663.28883.32.camel@irongate.swansea.linux.org.uk> <1028860246.1117.34.camel@cog> <20020815165617.GE14394@dualathlon.random> <1029496559.31487.48.camel@irongate.swansea.linux.org.uk> <15708.64483.439939.850493@kim.it.uu.se> <20020821131223.GB1117@dualathlon.random> Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Ximian Evolution 1.0.3 (1.0.3-6) Date: 21 Aug 2002 15:10:24 +0100 Message-Id: <1029939024.26425.49.camel@irongate.swansea.linux.org.uk> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 662 Lines: 14 On Wed, 2002-08-21 at 14:12, Andrea Arcangeli wrote: > However here the point is that the TSC was left _enabled_ (not disabled > and emulated as you are advocating) despite it was not in sync. That > cannot make any sense, except if you use the tsc as a random number > generator. Totally untrue. When you are doing profiling the data is very useful because CPU switches are trivial to filter and statistically rare - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/