Launchpad has imported 12 comments from the remote bug at https://bugzilla.redhat.com/show_bug.cgi?id=702826.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2011-05-07T14:07:30+00:00 Michael wrote: Description of problem: GNU time can print out the maximum RSS usage of its subprocess. The ru_maxrss value returned by the wait4 syscall is in units of kilobytes, but GNU time incorrectly treats this as a number of pages, multiplying the value by 4 before displaying it. Version-Release number of selected component (if applicable): time-1.7-37.fc12.i686 How reproducible: Always Steps to Reproduce: 1. /usr/bin/time -f %M perl -e '"x" x 400 x 1024 x 1024' Actual results: A bit over 1600000, indicating maximum RSS usage of 1.6 GB. This is not even possible on my system as it only has 1 GB of physical RAM. Expected results: Approximately 400000, since Perl should only be allocating around 400 MB. Additional info: Applying strace to the above command, it is clear that time is multiplying the ru_maxrss value returned by wait4: $ strace -ve wait4 /usr/bin/time -f %M perl -e '"x" x 400 x 1024 x 1024' wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, {ru_utime={0, 146977}, ru_stime={0, 676897}, ru_maxrss=411356, ru_ixrss=0, ru_idrss=0, ru_isrss=0, ru_minflt=102901, ru_majflt=1, ru_nswap=0, ru_inblock=176, ru_oublock=0, ru_msgsnd=0, ru_msgrcv=0, ru_nsignals=0, ru_nvcsw=1, ru_nivcsw=40}) = 7459 --- {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7459, si_status=0, si_utime=14, si_stime=68} (Child exited) --- 1645424 According to the getrusage(2) manpage: ru_maxrss (since Linux 2.6.32) This is the maximum resident set size used (in kilobytes). [...] I've attached a simple patch that simply skips the "pages to kilobytes" conversion for this field. Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/2 ------------------------------------------------------------------------ On 2011-05-07T14:09:53+00:00 Michael wrote: Created attachment 497533 Do not incorrectly convert ru_maxrss Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/3 ------------------------------------------------------------------------ On 2011-05-11T12:52:21+00:00 Petr wrote: All Fedoras affected (time-1.7). Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/5 ------------------------------------------------------------------------ On 2011-05-11T13:44:39+00:00 Petr wrote: Thank you for the report, fixed time version will be pushed into Fedoras soon. Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/6 ------------------------------------------------------------------------ On 2011-05-11T16:16:56+00:00 Petr wrote: Fixed in time-1.7-39.fc16 for F16. Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/7 ------------------------------------------------------------------------ On 2011-05-11T16:27:09+00:00 Fedora wrote: time-1.7-39.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/time-1.7-39.fc15 Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/8 ------------------------------------------------------------------------ On 2011-05-11T16:28:01+00:00 Fedora wrote: time-1.7-38.fc14 has been submitted as an update for Fedora 14. https://admin.fedoraproject.org/updates/time-1.7-38.fc14 Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/9 ------------------------------------------------------------------------ On 2011-05-11T16:28:16+00:00 Fedora wrote: time-1.7-38.fc13 has been submitted as an update for Fedora 13. https://admin.fedoraproject.org/updates/time-1.7-38.fc13 Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/10 ------------------------------------------------------------------------ On 2011-05-13T23:02:07+00:00 Fedora wrote: Package time-1.7-38.fc14: * should fix your issue, * was pushed to the Fedora 14 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing time-1.7-38.fc14' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/time-1.7-38.fc14 then log in and leave karma (feedback). Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/11 ------------------------------------------------------------------------ On 2011-05-19T04:58:41+00:00 Fedora wrote: time-1.7-39.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report. Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/12 ------------------------------------------------------------------------ On 2011-05-25T02:28:19+00:00 Fedora wrote: time-1.7-38.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report. Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/13 ------------------------------------------------------------------------ On 2011-05-25T02:53:48+00:00 Fedora wrote: time-1.7-38.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report. Reply at: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/comments/14 ** Changed in: time (Fedora) Status: Unknown => Fix Released ** Changed in: time (Fedora) Importance: Unknown => Undecided -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/742248 Title: time reports incorrect max rss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/time/+bug/742248/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
