[emanicslab] EmanicsLab - Status Update

[Rick Hofstede]

Hi David,

Do you have any news on the CPU issue?

Best regards,

--
Rick Hofstede

On 22 Apr 2014, at 14:26, David Hausheer <hausheer at ps.tu-darmstadt.de> wrote:

> Hi Rick,
> 
> I am still working on the CPU issue. I expect to be able to solve it this week.
> 
> Best regards
> David
> 
> On 22.04.2014 14:00, Rick Hofstede wrote:
>> Hi David,
>> 
>> Do you have any news on the CPU utilization problem of
>> emanicslab1.ewi.utwente.nl <http://emanicslab1.ewi.utwente.nl>? As of
>> today (or the end of last week) we also have problems with
>> emanicslab2.ewi.utwente.nl <http://emanicslab2.ewi.utwente.nl>; people
>> effectively cannot login anymore. One of the users receives the
>> following error message:
>> 
>> Last login: Thu Apr 17 09:15:58 2014 from wlan021251.mobiel.utwente.nl
>> <http://wlan021251.mobiel.utwente.nl>
>> WARNING - setns(/proc/627/ns/uts)=>-2 (ignored)
>> WARNING - setns(/proc/627/ns/ipc)=>-2 (ignored)
>> WARNING - setns(/proc/627/ns/net)=>-2 (ignored)
>> WARNING - setns(/proc/627/ns/mnt)=>-2 (ignored)
>> Traceback (most recent call last):
>>   File "/usr/sbin/lxcsu-internal", line 273, in <module>
>>     main()
>>   File "/usr/sbin/lxcsu-internal", line 220, in main
>>     if (not umount(fs_path,'-l')):
>>   File "/usr/sbin/lxcsu-internal", line 42, in umount
>>     output = os.popen('/bin/umount %s %s 2>&1'%(opts, fs_dir)).read()
>> OSError: [Errno 12] Cannot allocate memory
>> Connection to emanicslab2.ewi.utwente.nl
>> <http://emanicslab2.ewi.utwente.nl> closed.
>> 
>> Best regards,
>> 
>> --
>> Rick
>> 
>> On 09 Apr 2014, at 13:26, David Hausheer <hausheer at ps.tu-darmstadt.de
>> <mailto:hausheer at ps.tu-darmstadt.de>> wrote:
>> 
>>> Dear Andri,
>>> 
>>> Thanks for the note. I am aware of the CPU utilization problem, which
>>> seems to originate from systemd. I am looking into that and I hope to
>>> be able to solve it as soon as possible.
>>> 
>>> Best regards
>>> David
>>> 
>>> On 09.04.2014 09:42, Andri Lareida wrote:
>>>> Dear David,
>>>> 
>>>> There seems to be a problem with the first node in Twente:
>>>> emanicslab1.ewi.utwente.nl <http://emanicslab1.ewi.utwente.nl>
>>>> After the upgrade I was not able to copy files with SCP to the node, I
>>>> was able to log in though. Guilherme re-created my slice and now I can
>>>> not log in anymore. Guilherme also reported that there is a very high
>>>> CPU load on the machine and he can see processes from all users.
>>>> Something seems to be wrong with the set up.
>>>> Thanks for investigating.
>>>> 
>>>> Cheers
>>>> Andri
>>>> 
>>>> On 04/08/2014 01:50 AM, David Hausheer wrote:
>>>>> Dear all,
>>>>> 
>>>>> here is another status update of migration of EmanicsLab nodes:
>>>>> 
>>>>> UZH - both nodes running and up-to-date
>>>>> TUD - both nodes running and up-to-date
>>>>> PSNC - both nodes running and up-to-date
>>>>> UCL - both nodes running and up-to-date
>>>>> IBBT - both nodes running and up-to-date
>>>>> INRIA - both nodes running and up-to-date
>>>>> UPC - both nodes running and up-to-date
>>>>> UniGE - both nodes running and up-to-date
>>>>> UT - both nodes running and up-to-date
>>>>> JUB - both nodes running and up-to-date
>>>>> UniBW - both nodes running and up-to-date
>>>>> 
>>>>> We still need to install Ganglia on the nodes.
>>>>> 
>>>>> Also, we are currently facing a problem with CPU utilization (some of
>>>>> the nodes run at 100% CPU). We hope to be able to fix it soon.
>>>>> 
>>>>> Best regards
>>>>> David
>>>>> 
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
>>>> emanicslab mailing list
>>>> emanicslab at lists.ifi.uzh.ch
>>>> https://lists.ifi.uzh.ch/listinfo/emanicslab
>>>> 
>>> 
>>> --
>>> Prof. Dr. David Hausheer
>>> 
>>> Technische Universitaet Darmstadt
>>> Dept. of Electrical Engineering & Information Technology
>>> 
>>> Rundeturmstr. 10, Building S3/20, Room 225
>>> 64283 Darmstadt, Germany
>>> Phone: +49 6151 16 4280
>>> Fax: +49 6151 16 6152
>>> E-Mail: hausheer at ps.tu-darmstadt.de <mailto:hausheer at ps.tu-darmstadt.de>
>>> Web: http://www.ps.tu-darmstadt.de/
>>> _______________________________________________
>>> emanicslab mailing list
>>> emanicslab at lists.ifi.uzh.ch <mailto:emanicslab at lists.ifi.uzh.ch>
>>> https://lists.ifi.uzh.ch/listinfo/emanicslab
>> 
> 
> -- 
> Prof. Dr. David Hausheer
> 
> Technische Universitaet Darmstadt
> Dept. of Electrical Engineering & Information Technology
> 
> Rundeturmstr. 10, Building S3/20, Room 225
> 64283 Darmstadt, Germany
> Phone: +49 6151 16 4280
> Fax: +49 6151 16 6152
> E-Mail: hausheer at ps.tu-darmstadt.de
> Web: http://www.ps.tu-darmstadt.de/