Hi, We have observed a strange behaviour on our compute-nodes after the upgrade to squeeze and on new nodes freshly installed with squeeze.
All processes running longer than 24.8 days lead to "nonsense" cpu-time. Below is an example output of "ps -u username f" over time: [2012-05-29 05:49:33] 30590 ? R 35793:27 ./fortran_kdis 2 25 [2012-05-29 05:49:38] 30590 ? R 35793:32 ./fortran_kdis 2 25 [2012-05-29 05:49:43] 30590 ? R 35793:37 ./fortran_kdis 2 25 [2012-05-29 05:49:48] 30590 ? R 11129636:45 ./fortran_kdis 2 25 [2012-05-29 05:49:53] 30590 ? R 11129636:45 ./fortran_kdis 2 25 [2012-05-29 05:49:58] 30590 ? R 11129636:45 ./fortran_kdis 2 25 [2012-05-29 11:20:36] 30590 ? R 11129636:45 ./fortran_kdis 2 25 Several days later, the accumulated cpu time value remains the same. The daily report of the "Grid Engine 2011.11" job scheduler for this job shows: ... ...:86412.030000:6925734.008546:... ...:86380.140000:6923160.882762:... ...:86423.790000:6926644.923450:... ...:30016546.230000:2405779823.509468:... <---- day with jump ...:0.000000:0.000000:... ...:0.000000:0.000000:... ...:0.000000:0.000000:... ...:0.000000:0.000000:... ...:0.000000:0.000000:... ...:0.000000:0.000000::... ...:0.000000:0.000000:... ...:17112.340000:1371446.414438:... ...:86395.480000:6924655.520745:... ...:86411.810000:6926306.216313:... ...:86415.170000:6926575.536817:... ...:85071.220000:6818939.616130:... ... The two numbers between the ... represent values for "ru_utime" and "ru_stime". The accounting values for ru_utime the days before the "jump" are correct but afterwards they are nonsense for some days and than ok again (this job was running with 100% cpu usage all the time!). But all values for ru_stime are looking strange. Keep in mind: 1 day == 86400 sec. In addition for all jobs showing this behaviour after 35793:37, the values for the accumulated cpu-usage differ for every job: [2012-05-29 05:18:32] 30591 ? R 10557290:44 ./fortran_kdis 2 27 [2012-05-29 05:34:42] 30636 ? R 11129626:19 ./fortran_kdis 2 31 [2012-05-29 05:58:20] 30637 ? R 12274089:59 ./fortran_kdis 2 30 [2012-05-29 06:02:37] 30630 ? R 12274256:17 ./fortran_kdis 2 28 [2012-05-29 06:03:12] 30634 ? R 11129641:38 ./fortran_kdis 2 29 [2012-05-29 06:09:44] 30638 ? R 12274280:17 ./fortran_kdis 2 32 [2012-05-29 06:23:55] 30587 ? R 11701990:44 ./fortran_kdis 2 26 Used kernel and architecture are: # uname -a Linux warg09 2.6.32-5-amd64 #1 SMP Sun May 6 04:00:17 UTC 2012 x86_64 GNU/Linux Any help to get rid of this issue, would be highly appreciated. Thanks in advance... -- Uwe Bolick Zentrum für Astronomie und Astrophysik Technische Universität Berlin EW 8-1, Hardenbergstr. 36, D-10623 Berlin (Germany) -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20120917143547.ga15...@astro.physik.tu-berlin.de
