Re: Diagnosing an unstable Qube2

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Le 29 oct. 2012 =E0 13:12, Andy Ruhl a =E9crit :

> On Mon, Oct 29, 2012 at 12:41 AM, R=E9mi Zara <[email protected]> =
wrote:
>> Hi,
>>=20
>> After some years running quite well, my Qube2 (NetBSD 5.1) started to =
lock up after a few days, with the serial console unresponsive.
>> Usage is regular postgresql building and testing, which is quite =
processor and memory intensive, backup via rsync.
>> I changed the power supply, but that did not solve the problem.
>>=20
>> So I upgraded to NetBSD 6.0, and the machine is now really unstable:
>> lots of core dumps until the machine is unusable, tar telling that =
headers are invalid, then succeeding on the same file,
>>=20
>> then errors like this:
>> sendmail: panic: myfree: corrupt or unallocated memory block
>> [1]   Done                    /bin/sh /etc/dai... |
>>     Done                    tee /var/log/dai... |
>>     Abort trap (core dumped) sendmail -t
>>=20
>> How do I go about diagnosing what is the problem ?
>> Are there memory tests, disk tests that I could run ?
>>=20
>> Thanks for your help, I would be sad to have to decommission this =
little machine :-)
>>=20
>> R=E9mi Zara
>=20
> This seems very familiar to me, but I searched and couldn't find what
> I was looking for. I seem to remember doing checksums on the same file
> repeatedly and getting different results.
>=20
> I know there were some issues related to disconnecting the fan, and
> the theory was that the fan added some stability to the power supply.
>=20
> What you are describing could be hardware instability, but if it's
> really related to upgrading to version 6 then maybe not. It is
> probably a good idea to take the machine apart and clean it, and
> re-seat the riser card and memory if you haven't done it in a while.
>=20


Hi,

The machine would lock up before upgrading to 6.0. The upgrade just made =
the instability so much more pronounced.
I've ordered new RAM, and will clean the machine when I install it...

R=E9mi=

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