From owner-freebsd-current@FreeBSD.ORG Thu Jul 31 14:21:03 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4C9CECB2 for ; Thu, 31 Jul 2014 14:21:03 +0000 (UTC) Received: from heechee.tobez.org (heechee.tobez.org [IPv6:2001:2010:1::feef]) by mx1.freebsd.org (Postfix) with ESMTP id 12D7725B8 for ; Thu, 31 Jul 2014 14:21:02 +0000 (UTC) Received: by heechee.tobez.org (Postfix, from userid 1001) id 17BB645634; Thu, 31 Jul 2014 16:21:01 +0200 (CEST) Date: Thu, 31 Jul 2014 16:21:01 +0200 From: Anton Berezin To: freebsd-current@freebsd.org Subject: Fresh current (r269328) amd64: high load average while idle, slow keyboard reaction Message-ID: <20140731142100.GP92036@heechee.tobez.org> Mail-Followup-To: Anton Berezin , freebsd-current@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Powered-By: FreeBSD http://www.freebsd.org/ User-Agent: Mutt/1.5.23 (2014-03-12) X-Mailman-Approved-At: Thu, 31 Jul 2014 15:48:42 +0000 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18 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, 31 Jul 2014 14:21:03 -0000 Hi, Previously I ran CURRENT from some time in April without any problems. Symptoms: Consistently high LA (2.6 to 8.0) with all CPUs idle. At the console, depressing and holding a key does not lead to auto-repeat. At the console, sometimes a key only appears on the terminal after another key is pressed. In xorg, key auto-repeat sorta works, but visibly slower than active xset settings, and jerky as well. Moving mouse around helps. During reboot, when the kernel prints the number of dirty buffers periodically before shutting down, it "freezes" and does not print the next number until I press a key. So it takes multiple presses of "Shift" or "Control" before it actually boots. Nothing suspicious according to vmstat, vmstat -i, pcmstat, top, top -SH, top -m io. What I tried, by myself and because of various advices on IRC: - replacing sc with vt & disabling sc - removing atkbdc from kernel configuration - removing uart from kernel configuration - putting "off" for ttyu0 in /etc/ttys (it had "onifconsole") No luck. Verbose dmesg can be obtained from: http://www.tobez.org/download/dmesg.verbose.2014-07-31.txt Any thought? Thanks in advance, \Anton. -- Our society can survive even a large amount of irrational regulation. -- John McCarthy