Date: Fri, 5 Mar 1999 18:17:04 -0800 (PST) From: bob@pmr.com To: freebsd-gnats-submit@freebsd.org Subject: kern/10411: top, vmstat, iostat show 0% cpu idle & usage on SMP system Message-ID: <19990306021704.436811527C@hub.freebsd.org>
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>Number: 10411 >Category: kern >Synopsis: top, vmstat, iostat show 0% cpu idle & usage on SMP system >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Mar 5 18:20:01 PST 1999 >Closed-Date: >Last-Modified: >Originator: Bob Willcox >Release: 3.1-stable >Organization: Power Micro Research >Environment: FreeBSD luke.pmr.com 3.1-STABLE FreeBSD 3.1-STABLE #10: Wed Mar 3 19:38:49 CST 1999 root@luke.pmr.com:/usr/src/sys/compile/LUKE.mp i386 >Description: After installing a MP kernel on my system I have noticed that the various system utilities that display cpu usage all report 0.0% for everything. The UP kernel does not have this problem and the MP kernel will work ok briefly after rebooting, until I apply a load (such as starting X or building a kernel). For example top's line 3 output looks like this: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 0.0% idle My hardware is: ASUS XG-DLS motherboard 2 Xeon 400MHz/512KB cache processors 512MB of SDRAM memory >How-To-Repeat: After booting the system run top, vmstat or iostat and observe that the cpu usage stats. In a second virtual console do a kernel build. You will (if your system is failing like mine is) then see that the cpu stats being displayed will all change to zero and remain there till the next reboot. >Fix: Not known >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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