Just a me too on this one. I ran into this on a 10.04.3 system with some Matlab jobs that have been running for a couple of weeks.
# ps -f -C MATLAB UID PID PPID C STIME TTY TIME CMD 1234 21267 21256 99 Jan09 pts/3 1184016086-14:43:06 /opt/matlabR2011b/bin 1234 21578 21567 97 Jan09 pts/5 22-23:06:31 /opt/matlabR2011b/bin/glnxa64 1234 21688 21666 96 Jan09 pts/6 22-17:46:41 /opt/matlabR2011b/bin/glnxa64 1234 21786 21775 89 Jan09 pts/7 21-05:12:21 /opt/matlabR2011b/bin/glnxa64 1234 21884 21873 99 Jan09 pts/9 1184016084-11:35:28 /opt/matlabR2011b/bin # cat /proc/21267/stat 21267 (MATLAB) S 21256 21267 21256 34819 21267 4202496 48728480602 10279 1 0 85619631648 4611685975611267009 16 1 20 0 49 0 176768180 3195682816 527162 18446744073709551615 4194304 4206714 140735315194304 140735315193832 140009299867740 0 134742022 0 151526638 18446744073709551615 0 0 17 15 0 0 0 0 0 # cat /proc/21884/stat 21884 (MATLAB) S 21873 21884 21873 34825 21884 4202496 47007338124 10280 1 0 85595226373 4611685975617266477 6 1 20 0 49 0 176794854 3336249344 558780 18446744073709551615 4194304 4206714 140734232928064 140734232927592 140313580697692 0 134742022 0 151526638 18446744073709551615 0 0 17 15 0 0 0 0 0 For what it's worth, htop seems to work properly and show the CPU usage of these processes. Here's some system info: # uname -a Linux myhost 2.6.32-37-generic #81-Ubuntu SMP Fri Dec 2 20:32:42 UTC 2011 x86_64 GNU/Linux # cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=10.04 DISTRIB_CODENAME=lucid DISTRIB_DESCRIPTION="Ubuntu 10.04.3 LTS" Let me know if any other info would be helpful while these jobs are still running. :-) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/859311 Title: Wrong cpu-time calculation for long-running multi-threaded processes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/procps/+bug/859311/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
