Date: Mon, 11 Aug 2003 01:07:16 +0200 From: Erik Trulsson <ertr1013@student.uu.se> To: Daniela <dgw@liwest.at> Cc: stable@freebsd.org Subject: Re: Strange things going on with 4.8 Message-ID: <20030810230716.GA11942@falcon.midgard.homeip.net> In-Reply-To: <200308110040.56138.dgw@liwest.at> References: <200308102227.51564.dgw@liwest.at> <20030810151936.Q69012@carver.gumbysoft.com> <200308110040.56138.dgw@liwest.at>
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On Mon, Aug 11, 2003 at 12:40:56AM +0000, Daniela wrote: > On Sunday 10 August 2003 22:22, Doug White wrote: > > On Sun, 10 Aug 2003, Daniela wrote: > > > I'm having problems no end on my 4.8-STABLE box, and I hope you can help > > > me. > > > > > > My processes get lots of signals (mostly 6, 10 and 11), and my kernel > > > dumps core very often. I have the core dumps from the 4 latest crashes. > > > See attachment for more info. > > > Notice the common values for IdlePTD and initial pcb. Does this mean > > > anything? > > > > Not particularly ... > > > > These types of problems are generally caused by: > > > > 1. Bad memory > > 2. Overheated processor, or some similar CPU fault > > 3. Bad memory > > > > > 1) Some time ago KDE was hanging in disk wait state forever. > > > > 'inode'? > > > > > 2) When rebuilding the world, make sometimes fails, but when I retry, it > > > either works, or fails elsewhere. I have not seen this on -STABLE, only > > > on 5.0-RELEASE (on the same computer). > > > > 5.0-R isn't very representative. You'd have to check against -current. > > > > > I have already tested the memory (no errors). There weren't any problems > > > with 4.6-RELEASE on my old box. > > > > How did you test the memory? Generally short of using a hardware SIMM > > tester its very difficult to identify bad modules. memtest86 run over the > > period of several hours can sometimes work. > > > > BIOS "tests" don't count. > > I used sysutils/memtest from the ports, and let it run over night. That won't be able to test all memory and will easily miss a lot of problems. Can be used as evidence that an error exists, but not that there is no error. > BTW, is there some kind of "operating system" that boots off a floppy and just > tests the memory? That would be useful because memtest can't test all the > memory. Yes, there is. Memtest86 as mentioned a few lines above is exactly such a program. It is available from http://www.memtest86.com -- <Insert your favourite quote here.> Erik Trulsson ertr1013@student.uu.se
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