If/when you find out what it is, would you kindly report back to the list what you find? This has got me really curious now. :D
-Chris
On 2012-11-28, at 5:51 AM, David Fitzgerald <[log in to unmask]> wrote:
> Thank you everyone for all the good ideas. I have class this evening and will be able to use your suggestions. I'll let you know what I find.
>
> Dave
>
> -----Original Message-----
> From: Robert Blair [mailto:[log in to unmask]]
> Sent: Tuesday, November 27, 2012 11:56 AM
> To: Sergio Ballestrero
> Cc: David Fitzgerald; [log in to unmask]
> Subject: Re: clients slow down due to unknown process
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> "/usr/sbin/lsof -p $PID" will also list all of the resources it uses which is often a big help in figuring out wtf it is all about.
>
> On 11/27/2012 10:52 AM, Sergio Ballestrero wrote:
>> Hello David,
>> I'm not familiar with freeIPA, but anyway you can start by better
>> identifying the process.
>> In top, get the PID and look under /proc/$PID - in particular exe
>> will be a link to the binary, like lrwxrwxrwx 1 root root 0 Nov 27
>> 01:41 /proc/1/exe -> /sbin/init
>>
>> pstree -p -H $PID
>> will help you identify the parent process, if there's one.
>>
>> Cheers,
>> Sergio
>>
>> On 27 Nov 2012, at 16:21, David Fitzgerald wrote:
>>
>>> Hello,
>>>
>>> Sorry for the length of this post, but I want to make sure I give all
>>> the information needed for someone to help.
>>>
>>> I have a lab of 25 workstations running Scientific Linux 6.2. User
>>> accounts are authenticated via freeIPA, and auto mounted to an NFS
>>> server and the users use Gnome 2.8. The NFS and freeIPA servers are
>>> located on the same server (IP 10.10.10.10) which is also running
>>> Scientific Linux 6.2 and is a virtual guest in VMware ESXI 4.1.
>>>
>>> During class when the workstations are most heavily in use, the
>>> students are writing Fortran programs with gedit and usually have
>>> firefox up as well. Here is my predicament. During class some of
>>> the workstation screens will freeze with no mouse or keyboard input.
>>> This can last for varying lengths of time, sometimes a few minutes,
>>> some other times for the full length of the class. I can ssh in to
>>> the frozen machines and top will show load averages of up to 4 or more.
>>> The process taking up the most CPU is one I don't recognize named
>>> 10.10.10.10-ma. The 10.10.10.10 being the IP address of my server.
>>> I have no idea what that process is related to, whether it's freeIPA,
>>> NFS, Gnome or something else. Killing the process doesn't help as it
>>> simply restarts with a new PID. Note that the freezing does NOT
>>> happen when only a few people are using the lab, so reproducing the
>>> problem outside of class time is difficult.
>>>
>>> Can anyone help me track down this problem and fix it?
>>>
>>> I appreciate any help you can give.
>>>
>>> Thanks!
>>>
>>> Dave
>>>
>>>
>>> +++++++++++++++++++++++
>>> David Fitzgerald
>>> Department of Earth Sciences
>>> Millersville University
>>> Millersville, PA 17551
>>>
>>> Phone: 717-871-2394
>>>
>>
>> --
>> Sergio Ballestrero - http://physics.uj.ac.za/psiwiki/Ballestrero
>> University of Johannesburg, Physics Department ATLAS TDAQ sysadmin
>> team - Office:75282 OnCall:164851
>>
>>
>>
>>
>>
>>
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