From owner-freebsd-questions  Mon Nov 16 12:39:01 1998
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id MAA06469
          for freebsd-questions-outgoing; Mon, 16 Nov 1998 12:39:01 -0800 (PST)
          (envelope-from owner-freebsd-questions@FreeBSD.ORG)
Received: from home.dragondata.com (home.dragondata.com [204.137.237.2])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA06464
          for <questions@freebsd.org>; Mon, 16 Nov 1998 12:38:59 -0800 (PST)
          (envelope-from toasty@home.dragondata.com)
Received: (from toasty@localhost)
	by home.dragondata.com (8.8.8/8.8.5) id OAA26291;
	Mon, 16 Nov 1998 14:38:22 -0600 (CST)
From: Kevin Day <toasty@home.dragondata.com>
Message-Id: <199811162038.OAA26291@home.dragondata.com>
Subject: Re: MediaGX and calcru: negative time
In-Reply-To: <Pine.BSF.4.03.9811161212540.17775-100000@resnet.uoregon.edu> from Doug White at "Nov 16, 98 12:14:46 pm"
To: dwhite@resnet.uoregon.edu (Doug White)
Date: Mon, 16 Nov 1998 14:38:22 -0600 (CST)
Cc: questions@FreeBSD.ORG
X-Mailer: ELM [version 2.4ME+ PL31 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

> > wdc0: unit 0 (wd0): <QUANTUM FIREBALL SE3.2A>, multi-block-16
> > wd0: 3079MB (6306048 sectors), 6256 cyls, 16 heads, 63 S/T, 512 B/S
> > wdc1 at 0x170-0x177 irq 15 on isa
> > wdc1: unit 0 (atapi): <FX320S/q01>, removable, intr, dma, iordis
> > wcd0: 5512Kb/sec, 256Kb cache, audio play, 255 volume levels, ejectable tray
> > wcd0: no disc inside, unlocked
> 
> Nothing out of the ordinary there...
> 
> > calcru: negative time: -6644 usec
> > pid 8197 (dl), uid 0: exited on signal 11 (core dumped)
> 
> dl is one of your programs?  Backtrace the core dump and see what made it
> fall over.
> 
> > calcru: negative time: -6644 usec
> > pid 8211 (dl), uid 0: exited on signal 11 (core dumped)
> > calcru: negative time: -6644 usec
> > pid 8211 (dl), uid 0: exited on signal 11 (core dumped)
> > calcru: negative time: -6644 usec
> > pid 8211 (dl), uid 0: exited on signal 11 (core dumped)
> > /kernel: file: table is full   
> > syslogd: /var/run/utmp: Too many open files in system
> 
> dl was probably leaking file descriptors ...
> 
> > Now, since Cyrix is supporting us with this product, are there any questions
> > I can ask them that may shed some light?
> 
> The calcru is probably related, but I doubt your crashes are.  You'll have
> to analyse the core.
> 
> > It appears that the problem is brought out by lots of IDE access. The IDE
> > interface is done internaly, in the CPU. Could timeouts/delays in the IDE
> > side be slowing the clock somehow?
> 
> Most likely ..
> 

dl is one of my apps.... It runs fine, and only crashes when i get one of
thse calcru's. (it runs days at a time sometimes, i get a calcru error, and
it dies within seconds).

If it helps any, dl uses lots of sysv shared memory, and lots of mmap()ing.

It appears that it's segfaulting trying to read a global variable in the
application. It's different each time, but always a global variable.


I posted this to -current, since a similar discussion went on here not to
long ago, I believe. :)

Kevin

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message