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Old 12-18-2008, 11:27 PM
Jonas Mixter
 
Default System "freeze" / IBM x3650 kernel options

Hi!
I have an IBM x3650 server with a single quad-core 2.0 GHz Intel Xeon
(and one empty CPU-slot) and 4 GB RAM. The system is running an ordinary
installation of etch.

I used the linux-image-2.6.18-6-686-bigmem kernel but had some strange
problems with the server. It all booted fine but occasionally the entire
system freezed for a few seconds. Both running services (smtp, pop,
imap-daemons, ongoing ssh-sessions) and the local console is "dead".
After a little while (about 10-20 seconds typically) all the services
became avaliable again. This has happened at least 5-6 times during last
afternoon and evening.

I booted the server with noapic, nolapic and clock=pit as kernel options
(I later saw that clock was replaced with clocksource, so I don't know
if that option changes anything) during the problems. The kernel hangs
from time to time at boot without the noapic and nolapic options, and
there also seems to be problem with clock skew on the machine.


Now I've upgraded the kernel to etchnhalf
(linux-image-2.6.24-etchnhalf.1-686-bigmem) and I hope that this will
solve the problem. I have seen a few signs of the freeze after the
upgrade, but I cannot verify it yet.
The previous booting problems without noapic and nolapic seems to be
gone with this kernel version, so the kernel now boots without any
special options. I have had a few problems with the clock too after the
upgrade... The kernel prints this at boot time:
kernel: Time: tsc clocksource has been installed.

So, finally, my question... :-)
Is there anyone else running etch on a IBM x3650 (dual or quad core, I
have clock skew-problems with another server too that has a dual core
Xeon)? Is there any kernel parameters needed? Which kernel version is
recommended? 2.6.18, 2.6.24 or a custom kernel?
Does anyone else (with a x3650 or not) have similar problems with etch
and x3650? I get no errors in dmesg or syslog about the freeze and the
system just run on as nothing has happened afterwards.

Best regards, Jonas Mixter


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Old 03-22-2012, 09:53 PM
Joey L
 
Default System "freeze" / IBM x3650 kernel options

well..my issue with the kernel is gone - do not know why.
But now having issue with the video driver.
I have stopped gd3 from loading on start, and now can not get the
server console to show on my monitor.
Did you see this ?

On Wed, Mar 21, 2012 at 3:20 AM, Jonas Mixter <jonas.mixter@jamtport.se> wrote:
> Hi Joey,
> Sorry for the late answer. I've been on parental leave for a week and is
> back at the office today.
>
> We've never gotten any kernel panic errors, if I recall correctly. We only
> had the strange "pause"-error where the entire machine stopped for a few
> seconds and then continued as if nothing had happened.
>
> The x3650's (both M1 and M3) that we have are used with Debian etch,
> etch-n-half, lenny and squeeze without any special drivers or kernels. Apart
> from the clock sync issue (which we had on almost all machines for a while)
> and the "pause"-error (which we only had on one machine, luckily) we've
> never had any problems with the servers.
>
> Could it be a hardware error on your machine? I don't know if the server is
> in production, but if not, does the same problems show up after a reinstall
> or if you install another OS (Windows, FreeBSD?).
> I hope that you find the cause of the problem!
>
> Best regards, Jonas Mixter
>
>
> Joey L skrev följande 2012-03-13 23.15:
>
>> Hi Jonas -
>> I am using the x3650 with the ServRaid 8k card.
>> I am getting kernel panic errors - have you seen these type of messeges?
>> I have downloaded the lasted firmware for the controller, bios, and
>> drives - but I am still getting weird system issues.
>> I sometimes have the system very unresponsive to me - or when the
>> server screen goes to sleep - it never comes back.
>> I had a couple of kernel errors show up on the screen - but do not
>> know what they mean or how to fix them - i have googled.
>> Where does debian store hardware issues or messeges ?
>> Have you installed a special driver or kernel on your system for it to
>> be stable ?
>> The last thing I did in the IBM bios is turn off virtualization - that
>> makes the system a little more responsive but still have wierd kernel
>> errors.
>>
>>
>> thanks
>> mjh
>>
>> On Thu, Dec 18, 2008 at 7:27 PM, Jonas Mixter<jonas.mixter@jamtport.se>
>> *wrote:
>>>
>>> Hi!
>>> I have an IBM x3650 server with a single quad-core 2.0 GHz Intel Xeon
>>> (and one empty CPU-slot) and 4 GB RAM. The system is running an ordinary
>>> installation of etch.
>>>
>>> I used the linux-image-2.6.18-6-686-bigmem kernel but had some strange
>>> problems with the server. It all booted fine but occasionally the entire
>>> system freezed for a few seconds. Both running services (smtp, pop,
>>> imap-daemons, ongoing ssh-sessions) and the local console is "dead".
>>> After a little while (about 10-20 seconds typically) all the services
>>> became avaliable again. This has happened at least 5-6 times during last
>>> afternoon and evening.
>>>
>>> I booted the server with noapic, nolapic and clock=pit as kernel options
>>> (I later saw that clock was replaced with clocksource, so I don't know
>>> if that option changes anything) during the problems. The kernel hangs
>>> from time to time at boot without the noapic and nolapic options, and
>>> there also seems to be problem with clock skew on the machine.
>>>
>>>
>>> Now I've upgraded the kernel to etchnhalf
>>> (linux-image-2.6.24-etchnhalf.1-686-bigmem) and I hope that this will
>>> solve the problem. I have seen a few signs of the freeze after the
>>> upgrade, but I cannot verify it yet.
>>> The previous booting problems without noapic and nolapic seems to be
>>> gone with this kernel version, so the kernel now boots without any
>>> special options. I have had a few problems with the clock too after the
>>> upgrade... The kernel prints this at boot time:
>>> kernel: Time: tsc clocksource has been installed.
>>>
>>> So, finally, my question... :-)
>>> Is there anyone else running etch on a IBM x3650 (dual or quad core, I
>>> have clock skew-problems with another server too that has a dual core
>>> Xeon)? Is there any kernel parameters needed? Which kernel version is
>>> recommended? 2.6.18, 2.6.24 or a custom kernel?
>>> Does anyone else (with a x3650 or not) have similar problems with etch
>>> and x3650? I get no errors in dmesg or syslog about the freeze and the
>>> system just run on as nothing has happened afterwards.
>>>
>>> Best regards, Jonas Mixter
>>>
>>>
>>> --
>>> To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
>>> with a subject of "unsubscribe". Trouble? Contact
>>> listmaster@lists.debian.org
>>>
>


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Archive: CAK3ER7utzh55uB9o30JO9-jiWbZjcyZ4vF4PhLqRuZqrpP0KnA@mail.gmail.com">http://lists.debian.org/CAK3ER7utzh55uB9o30JO9-jiWbZjcyZ4vF4PhLqRuZqrpP0KnA@mail.gmail.com
 

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