From owner-freebsd-questions Tue Nov 9 7:56:51 1999 Delivered-To: freebsd-questions@freebsd.org Received: from europa.salford.ac.uk (europa.salford.ac.uk [146.87.3.2]) by hub.freebsd.org (Postfix) with SMTP id 1CF8314BFC for ; Tue, 9 Nov 1999 07:56:45 -0800 (PST) (envelope-from M.S.Powell@salford.ac.uk) Received: (qmail 22976 invoked by alias); 9 Nov 1999 15:56:45 -0000 Received: (qmail 22970 invoked from network); 9 Nov 1999 15:56:44 -0000 Received: from plato.salford.ac.uk (146.87.255.76) by europa.salford.ac.uk with SMTP; 9 Nov 1999 15:56:44 -0000 Received: (qmail 21703 invoked by uid 141); 9 Nov 1999 15:56:44 -0000 Date: Tue, 9 Nov 1999 15:56:44 +0000 (GMT) From: Mark Powell X-Sender: mark@localhost To: Charles Randall Cc: freebsd-questions@freebsd.org Subject: RE: Stress testing a machine with "make world" In-Reply-To: <64003B21ECCAD11185C500805F31EC0304621B98@houston.matchlogic.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, 9 Nov 1999, Charles Randall wrote: > Out of curiosity, how much RAM and swap do you have? 128MB RAM - 556MB swap make world (Didn't swap at all. Completed okay) make -j60 world (Saw 50-60MB in swap, but was only a cursory check. Paniced.) Later I put the RAM upto a total of 256MB. make -j200 world (Saw it swapping, but can't remember how much. Completed okay) > Were there any indication that the system was running low on swap? None at all. Too much swap for that? > Was there a message in the syslog? Nope. Re: swap space, you mean? > Charles > > -----Original Message----- > From: Mark Powell [mailto:M.S.Powell@salford.ac.uk] > Sent: Tuesday, November 09, 1999 4:35 AM > To: freebsd-questions@freebsd.org > Subject: Stress testing a machine with "make world" > > > We all know "make world" is a good acid test of whether a machine has > decent motherboard, RAM and disk subsystem. However, how far does one go? > And what is a good stress test of a machine with lots of RAM? > I've had a machine forced upon me, which is based on a Micro-Star 6119 > motherboard. Never heard of them before, so I decided to test it out. > Handles a 3.3R "make world" fine, but will panic the kernel on a > "make -j60 world". > > ----- > IdlePTD 2711552 > initial pcb at 2310b8 > panicstr: page fault > panic messages: > --- > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x29a > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc0174bef > stack pointer = 0x10:0xc78b5f30 > frame pointer = 0x10:0xc7be8174 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 2 (pagedaemon) > interrupt mask = > trap number = 12 > panic: page fault > > syncing disks... 133 133 133 119 93 45 7 1 done > > .... > > --- > #0 boot (howto=Cannot access memory at address 0x20. > ) at ../../kern/kern_shutdown.c:285 > 285 dumppcb.pcb_cr3 = rcr3(); > --- > > These sort of errors are bad hardware? > This always happens when the machine has 128MB of RAM. If the RAM is > increased to 256MB, I can't get the "make world" to fail, even putting the > number of concurrent jobs up into the hundreds. I presume this is due to > it swapping less and not encountering the problems with the hardware? How > can one test such a machine without resorting to a "make -j100 world" on > each and even DIMM in turn? > Cheers. > > Mark Powell - UNIX System Administrator - Clifford Whitworth Building > A.I.S., University of Salford, Salford, Manchester, UK. > Tel: +44 161 295 5936 Fax: +44 161 295 5888 www.pgp.com for PGP key > M.S.Powell@ais.salfrd.ac.uk (spell salford correctly to reply to me) > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > Mark Powell - UNIX System Administrator - Clifford Whitworth Building A.I.S., University of Salford, Salford, Manchester, UK. Tel: +44 161 295 5936 Fax: +44 161 295 5888 www.pgp.com for PGP key M.S.Powell@ais.salfrd.ac.uk (spell salford correctly to reply to me) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message