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Date:      Thu, 5 Apr 2001 09:10:42 -0700
From:      Mahlon Smith <reich@internetcds.com>
To:        hackers@freebsd.org
Subject:   Re: pmap bomb on 4.0-STABLE
Message-ID:  <20010405091042.A7805@internetcds.com>
In-Reply-To: <59063B5B4D98D311BC0D0001FA7E452205FD9AFB@l04.research.kpn.com>; from "K.J.Koster@kpn.com" on Thu, Apr 05, 2001 at 09:57:10AM
References:  <59063B5B4D98D311BC0D0001FA7E452205FD9AFB@l04.research.kpn.com>

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> > Can anyone tell me what this means - and even better, a fix?  It's
> > my understanding that pmap concerns shared memory, is it possible
> > I have a bad stick of ram floating around?
> > 
> Bad memory sticks are easy to find. Just rip out half the RAM and let the
> box run for a few days, then let it run off the other half for a while.


Of course, this is pretty far from scientific troubleshooting, especially
when it crashes at random times.  It's also highly undesirable to cripple
the machine, considering it's a production box.

I just need to know if pmap_entry really does have anything to do with physical
ram, before I go off on a ram swapping goose chase, just to find out a
month down the road the problem isn't fixed.

--
Mahlon Smith
InternetCDS
http://www.internetcds.com

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