From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755704Ab1KXKaT (ORCPT ); Thu, 24 Nov 2011 05:30:19 -0500 Received: from smtprelay0214.b.hostedemail.com ([64.98.42.214]:54843 "EHLO smtprelay.b.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754984Ab1KXKaR (ORCPT ); Thu, 24 Nov 2011 05:30:17 -0500 X-Panda: scanned! X-Session-Marker: 742E617274656D406C79636F732E636F6D X-Filterd-Recvd-Size: 4006 Date: Thu, 24 Nov 2011 10:30:15 +0000 (GMT) From: "Artem S. Tashkinov" To: linux-kernel@vger.kernel.org Message-ID: <1718181782.740375.1322130615898.JavaMail.mail@webmail19> Subject: [REGRESSION] [Linux 3.2] top/htop and all other CPU usage metering applications has gone crackers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Mailer: Webmail X-Originating-IP: [46.146.86.117] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, I'd like to report a weird regression in Linux 3.2 (running rc3 now) - all CPU metering applications have gone terribly mad under this kernel: Here are two text snapshots of htop: 1 [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Tasks: 135 total, 1 running 2 [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Load average: 0.00 0.01 0.05 3 [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Uptime: 00:27:49 4 [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Load: 0.00 Mem[|||||||||||| 544/8093MB] Avg[||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] IORR IOWR IO PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command 0 0 0 3529 root 20 0 70052 52244 19324 S 300. 0.6 0:25.93 /usr/bin/X -br 0 0 0 3678 user 20 0 33952 10220 8448 S 100. 0.1 0:03.58 gkrellm 0 0 0 3772 user 20 0 32144 13960 9532 S 100. 0.2 0:07.46 konsole [kdeinit] --noxft 0 0 0 6061 user 20 0 2780 1276 960 R 100. 0.0 0:00.01 htop 0 0 0 1 root 20 0 2884 1376 1168 S 0.0 0.0 0:01.00 /sbin/init 0 0 0 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 1 [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Tasks: 135 total, 1 running 2 [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Load average: 0.00 0.01 0.05 3 [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Uptime: 00:28:43 4 [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] Load: 0.00 Mem[|||||||||||| 545/8093MB] Avg[||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%] IORR IOWR IO PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command 0 0 0 6061 user 20 0 2780 1288 972 R 57.0 0.0 0:00.11 htop 0 0 0 5243 user 20 0 559M 318M 30928 S 57.0 3.9 0:26.07 /opt/firefox/firefox 0 0 0 3687 user 20 0 108M 39124 23564 S 57.0 0.5 0:06.50 kedit 0 0 0 3637 user 20 0 26960 5572 4288 S 57.0 0.1 0:00.02 klauncher [kdeinit] --new-startup 0 0 0 3529 root 20 0 70052 52244 19324 S 0.0 0.6 0:26.71 /usr/bin/X -br Interestingly with this madness going on, the internal kernel average load counter works properly: [root@localhost ~]# uptime 16:20:38 up 44 min, 2 users, load average: 0.02, 0.04, 0.05 Right at this moment all process viewers report 400% CPU load (I have 4 CPU cores), either 400% loaded by user processes or 200% by system and 200% by user processes. Graphically it looks this way: http://img717.imageshack.us/img717/6495/top2b.png I'm not running any CPU intensive applications at the moment at all. My .config file can be downloaded here: http://ompldr.org/iYmZneg My distro is Fedora 14 i686. Best wishes, Artem