Re: systems hangs every few days
On 06/18/2013 10:31 AM, Chris Purves wrote:
> On 2013-06-18 10:20, Rob Owens wrote:
>> ----- Original Message -----
>>> From: "Chris Purves" <chris@northfolk.ca>
>>> To: debian-user@lists.debian.org
>>> Sent: Tuesday, June 18, 2013 8:59:07 AM
>>> Subject: systems hangs every few days
>>>
>>> After upgrading to wheezy, I get a system hang every one or two days
>>> where the system becomes completely unresponsive and I need do a
>>> cold boot.
>>>
>> That sounds a lot like bad RAM. Run MEMTEST86 on it. I'm not sure if the debian install cds contain that, but Knoppix usually has that as a boot option. The full test could take more than a day. If you're lucky, it'll find an error in the first 10 minutes.
>>
>
> I ran memtest86 already for about 20 minutes without error. (I forgot to mention that in original post). I will run it overnight tonight to see if anything else pops up.
>
> I am skeptical that it's bad RAM since the problem occurred after upgrading and I would have expected some kernel panic errors in the logs or something like that, although I suppose bad RAM can manifest itself in different ways.
One thing I noted in your first message, Chris, was that it usually happens when
a cron job is running. I immediately thought of two possibilities:
1. One or more of the cron jobs are running a process that is "tickling" a
driver that doesn't work as well with the newer kernel as it did with the
previous one.
2. A scheduled job is doing something CPU-intensive that could be making the
system overheat. (I suppose load caused by a given job might be worse under
wheezy than it was under squeeze.)
Unfortunately, I didn't keep the earlier messages and can't refer back to them
to be certain whether or not my addled brain is remembering the details properly.
I hope you find the gremlin and oust him!
Regards,
J.
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