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Date:      Fri, 21 Mar 2014 23:25:59 -0700
From:      Doug Hardie <bc979@lafn.org>
To:        Olivier Nicole <olivier2553@gmail.com>
Cc:        "questions@freebsd.org FreeBSD" <questions@freebsd.org>
Subject:   Re: Frequent Page Faults
Message-ID:  <808F4ABB-27FA-48D6-B526-A19C4A361667@lafn.org>
In-Reply-To: <CA%2Bg%2BBvjRy45%2BbSKttWx=R3J-WyBBLa9i_qLXFDFAysSTcNJ8yw@mail.gmail.com>
References:  <F0344C79-D919-43B5-88B2-DCDE590741B1@lafn.org> <CA%2Bg%2BBvjRy45%2BbSKttWx=R3J-WyBBLa9i_qLXFDFAysSTcNJ8yw@mail.gmail.com>

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On 15 March 2014, at 20:35, Olivier Nicole <olivier2553@gmail.com> =
wrote:

> Hi,
>=20
> Wild guess, but if you could have someone checking the hardware for
> you: dirty memory connector, dust clogged CPU fan... As you said, the
> system has been running for over 4 years, this could very much be
> hardware.
>=20
> Olivier

Well, it took a long time to get to the bottom of this.  The CPU fan was =
fine, no dust.  The machine is cleaned every 6 months so I didn't expect =
that to be the cause.  Adding a new NIC changed the character of the =
crashes and the traces were completely different after that.  We =
replaced the memory and power supply.  Neither had any effect on the =
crashes or messages.  Updated the OS to 9.2 on brand new disks.  =
Likewise no change in the crashes.  Finally gave up and replaced the =
entire computer.  Problem solved.  It must be the motherboard or CPU.  =
We are taking the unit back to the manufacturer (its local) and they are =
going to see what is causing the problem.  Unfortunately our backup =
machine doesn't have as much horsepower so it tends to run a bit slower. =
 Its noticeable by our users.  The OS upgrade cause a few issues.  A =
couple of packages have new configuration parameters that are not =
documented anywhere I could find.  It took awhile of reading through a =
lot of code to figure out what to do to get them working again.  There =
is real value in keeping UPDATING and README files current, complete, =
and accurate.  Yes I know its a real pain to do that, but it really pays =
off for those who use them.





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