From owner-freebsd-bugs@FreeBSD.ORG Wed Oct 6 06:00:51 2004 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8DC2516A532 for ; Wed, 6 Oct 2004 06:00:51 +0000 (GMT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4AED643D2F for ; Wed, 6 Oct 2004 06:00:50 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.11/8.12.11) with ESMTP id i9660oim017830 for ; Wed, 6 Oct 2004 06:00:50 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.11/8.12.11/Submit) id i9660o7u017829; Wed, 6 Oct 2004 06:00:50 GMT (envelope-from gnats) Date: Wed, 6 Oct 2004 06:00:50 GMT Message-Id: <200410060600.i9660o7u017829@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org From: Gleb Smirnoff Subject: Re: misc/71603: "systat -v" enters infinite loop X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Gleb Smirnoff List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Oct 2004 06:00:51 -0000 The following reply was made to PR bin/71603; it has been noted by GNATS. From: Gleb Smirnoff To: David Kelly Cc: freebsd-gnats-submit@freebsd.org Subject: Re: misc/71603: "systat -v" enters infinite loop Date: Wed, 6 Oct 2004 09:59:19 +0400 David, On Sat, Sep 11, 2004 at 05:51:01PM +0000, David Kelly wrote: D> >How-To-Repeat: D> I have not found a reliable means of creating the situation but it seems to happen under heavy disk activity with multiple processes using single drive, and each process is able to run the drive at its limits. Such as md5, par2, or urar. D> D> Does not seem to matter if the drive is on parallel ATA or serial ATA. can you build systat with debug flags: # echo CFLAGS+=-g >> /etc/make.conf # echo STRIP= >> /etc/make.conf # cd /usr/src/usr.bin/systat # make # make install Later, when you trigger this bug, try to attach to process using gdb: # gdb `which systat` in gdb prompt type "bt" command, and attach backtrace to this PR. -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE