Date: Sun, 19 Jun 2005 17:12:31 -0400 From: "Matt Emmerton" <matt@gsicomp.on.ca> To: "Andreas Tobler" <toa@pop.agri.ch>, =?UTF-8?B?77+9?= <des@des.no> Cc: Tarc <tarc@tarc.po.cs.msu.su>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: -CURRENT crashes on compilling Message-ID: <001b01c57513$9e9265b0$1200a8c0@gsicomp.on.ca> References: <20050617180321.GA1131@tarc.po.cs.msu.su> <867jgskfvd.fsf@xps.des.no><20050618105622.GA723@tarc.po.cs.msu.su><86k6krg0z5.fsf@xps.des.no> <42B5D82E.2090509@pop.agri.ch>
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> Dag-Erling Smørgrav wrote: > > Tarc <tarc@tarc.po.cs.msu.su> writes: > > > >>On Fri, Jun 17, 2005 at 08:17:10PM +0200, Dag-Erling SmЬrgrav wrote: > >> > >>>Bad hardware - most likely bad RAM, possibly a bad CPU. > >> > >>Hmm... I thinked about this, but RAM is ok. > > Side note, I could not have a look at your config/dmesg etc. > tarc.po.cs.msu.su could not be found. > > > How do you know? Most software memory testers don't load the system > > enough to trip over marginal RAM; 'make buildworld' does. > > Yeah, buildkernel and buildworld are good stress tests. The same as a > gcc bootstrap is. > > >>How test processor? > > > > > > 'make buildworld' with known-good RAM is a pretty good indicator. > > Here my side note 2, it's not on x86, but on ppc. I have a powerbook > with one GB of ram. Doing buildworld and buildkernel ended up in such > sig 11 failures at random places. Not reproducable. > > I know my hw is ok, I do daily gcc bootstraps and the machine works. But > under fbsd ppc I got the above sig 11 issues. A short talk with Peter > Grehan made me try to reduce the physical memory software side with > hw.physmem=512M. Bingo, that was it. I could do buildkernel and > buildworld with hw.physmem=512M. No problem. So, our thinking is, that > there is a trouble with physical mem > 512/640MB on fbsd ppc. It more likely means that there is a problem with the memory chip(s) that hold the upper 512MB of memory on your system. A gcc bootstrap is probably not exercising this memory; a FreeBSD buildworld is. -- Matt Emmerton
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