From owner-freebsd-stable@FreeBSD.ORG Tue Jul 18 13:31:55 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6F59516A4DD for ; Tue, 18 Jul 2006 13:31:55 +0000 (UTC) (envelope-from mb@imp.ch) Received: from pop.imp.ch (mx2.imp.ch [157.161.9.17]) by mx1.FreeBSD.org (Postfix) with ESMTP id E046543D55 for ; Tue, 18 Jul 2006 13:31:54 +0000 (GMT) (envelope-from mb@imp.ch) Received: from godot.imp.ch (godot.imp.ch [157.161.4.8]) by pop.imp.ch (8.13.7/8.13.7/Submit_imp) with ESMTP id k6IDVoAa026116 for ; Tue, 18 Jul 2006 15:31:52 +0200 (CEST) (envelope-from mb@imp.ch) Date: Tue, 18 Jul 2006 15:31:49 +0200 (CEST) From: Martin Blapp To: freebsd-stable@freebsd.org Message-ID: <20060718152306.X36995@godot.imp.ch> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Scanned-By: MIMEDefang 2.57 on 157.161.9.65 Subject: Please confirm: top(1) cpu time broken on FreeBSD 6.1 (RELEASE/STABLE) SMP ? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Jul 2006 13:31:55 -0000 Hi all, I'm currently seeing strang things going on on all our upgraded SMP 2 CPU boxes. 4 Boxes are upgraded from 5.5 to 6 STABLE, one box is running 6.1 RELEASE. All of them have SMP kernels, just using the provided GENERIC and SMP kernel config files. Mergemaster has been done on all boxes. If a box is full loaded top(1) shows: CPU states: 41.7% user, 0.0% nice, 7.7% system, 0.6% interrupt, 50.0% idle I can buildworld -j 100, do verything what I want. The sum of idle time never goes below 50.0% idle ! And the sum of total CPU time never goes over 50.0%. So I wonder if just top is broken (in 6.1 RELEASE too), or if this is a SCHED4BSD bug. Can someone confirm this issue ? We see it on IBL X-Series 346 Boxes, as on IBM 306M Dual Core SMP systems. Martin Martin Blapp, ------------------------------------------------------------------ ImproWare AG, UNIXSP & ISP, Zurlindenstrasse 29, 4133 Pratteln, CH Phone: +41 61 826 93 00 Fax: +41 61 826 93 01 PGP: PGP Fingerprint: B434 53FC C87C FE7B 0A18 B84C 8686 EF22 D300 551E ------------------------------------------------------------------