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:[email protected]] Sent: Tuesday, November 27, 2012 11:56 AM To: Sergio Ballestrero Cc: David Fitzgerald; [email protected] 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-----
