From owner-freebsd-current@FreeBSD.ORG Wed Feb 23 16:50:53 2005 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 10BF216A4CE; Wed, 23 Feb 2005 16:50:53 +0000 (GMT) Received: from mp2.macomnet.net (mp2.macomnet.net [195.128.64.6]) by mx1.FreeBSD.org (Postfix) with ESMTP id BF5E743D54; Wed, 23 Feb 2005 16:50:49 +0000 (GMT) (envelope-from maxim@macomnet.ru) Received-SPF: pass (mp2.macomnet.net: domain of maxim@macomnet.ru designates 127.0.0.1 as permitted sender) receiver=mp2.macomnet.net; client_ip=127.0.0.1; envelope-from=maxim@macomnet.ru; Received: from localhost (localhost [127.0.0.1]) by mp2.macomnet.net (8.12.11/8.12.11) with ESMTP id j1NGolKa094448; Wed, 23 Feb 2005 19:50:48 +0300 (MSK) (envelope-from maxim@macomnet.ru) Date: Wed, 23 Feb 2005 19:50:47 +0300 (MSK) From: Maxim Konovalov To: Robert Watson In-Reply-To: Message-ID: <20050223194943.M94267@mp2.macomnet.net> References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-SpamTest-Info: Profile: Formal (208/050203) X-SpamTest-Info: Profile: Detect Hard (4/030526) X-SpamTest-Info: Profile: SysLog X-SpamTest-Info: Profile: Marking - Keywords (2/030321) X-SpamTest-Status: Not detected X-SpamTest-Version: SMTP-Filter Version 2.0.0 [0124], SpamtestISP/Release cc: current@freebsd.org Subject: Re: Kernel profiling on a dual xeon with HTT leads to wedge? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Wed, 23 Feb 2005 16:50:53 -0000 On Wed, 23 Feb 2005, 13:20-0000, Robert Watson wrote: > > I tried to turn on high precision kernel profiling on a dual Xeon box with > HTT (so four logical processors) at work today. Unfortunately, whenever I > do so, it seems to wedge hard within a few seconds. I can typically hit > enter on the serial console maybe 4-6 times before it hangs pretty solidly > (serial break doesn't work). I don't remember having this problem before, > but when I backed the kernel out fo Feb 7, Jan 1, Dec 1, and Nov 1 the > problem remained. I'm wondering if maybe I had HTT off on the box > previously, but can't turn it off remotely currently so can't try that > now. Does anyone else have kernel profilng working with >2 > physical/logical processors? Doesn't work for me even on RELENG_4 dual xeon/htt box. -- Maxim Konovalov