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 <david.fitzger...@millersville.edu> 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:r...@anl.gov] > Sent: Tuesday, November 27, 2012 11:56 AM > To: Sergio Ballestrero > Cc: David Fitzgerald; scientific-linux-us...@fnal.gov > 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 >> >> >> >> >> >> > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.5 (GNU/Linux) > > iQEUAwUBULTwmfQM1KNWz8QaAQLU0Qf2JXa29RVDhJALq2TD72Nis4wAmxlqFIYP > rIo5sHBUI+o/bebsDit9qoC+hWuCK3+xDai9fzF2jUQqXfhRZiPHjdQRpCViMurY > Wp+aVZWCD1U3KusuWMSWlv6Xdx0QmaMQr8Nh8JRRWUi8cNEgAO2Th1txwdu3auJb > LssTFmwUjLUEC0mKhgx6520hisirfOHNTnF3rQCN5ilZGEYEZ2vMm/lcm5yI0Sqc > wdqWUXVYGNsBepFf4bRWaWPX0Hbf6sbLgoJNUHJOJ2pGpc3MUp3SiGsIIUGkZwPW > xT6kS523J+nItY/odmvdl+ibHRVa7TgDx0xhuqISarr39g00yvvx > =RQky > -----END PGP SIGNATURE-----