I've executed the test case on a Lucid system. Here's the output for the 2.6.32-41.94 kernel: # uname -a Linux lucid 2.6.32-41-generic #94-Ubuntu SMP Fri Jul 6 16:51:39 UTC 2012 i686 GNU/Linux # ./leap_seconds now: 1343779191:18314044 diff: 0:275081 rem: 0:0 now: 1343779191:518753118 diff: 0:439074 rem: 0:0 now: 1343779192:18885544 diff: 0:132426 rem: 0:0 now: 1343779192:519186044 diff: 0:300500 rem: 0:0 now: 1343779193:19389186 diff: 0:203142 rem: 0:0 now: 1343779193:520615448 diff: 0:1226262 rem: 0:0 now: 1343779194:20769790 diff: 0:154342 rem: 0:0 now: 1343779194:520932743 diff: 0:162953 rem: 0:0 now: 1343779195:21301107 diff: 0:368364 rem: 0:0 now: 1343779195:521610712 diff: 0:309605 rem: 0:0 now: 1343779196:21818618 diff: 0:207906 rem: 0:0 now: 1343779196:522070412 diff: 0:251794 rem: 0:0 now: 1343779197:22276862 diff: 0:206450 rem: 0:0 now: 1343779197:522477856 diff: 0:200994 rem: 0:0 now: 1343779198:22686111 diff: 0:208255 rem: 0:0 now: 1343779198:522924932 diff: 0:238821 rem: 0:0 now: 1343779199:24238584 diff: 0:1313652 rem: 0:0 now: 1343779199:524540590 diff: 0:302006 rem: 0:0 now: 1343779199:24829471 diff: 0:-999711119 rem: 0:0 now: 1343779199:24938078 diff: 0:-499891393 rem: 0:0 now: 1343779199:24982361 diff: 0:-499955717 rem: 0:0 now: 1343779199:25022793 diff: 0:-499959568 rem: 0:0 now: 1343779199:25063446 diff: 0:-499959347 rem: 0:0 now: 1343779199:25104451 diff: 0:-499958995 rem: 0:0 now: 1343779199:25147178 diff: 0:-499957273 rem: 0:0 now: 1343779199:25193846 diff: 0:-499953332 rem: 0:0 now: 1343779199:25243894 diff: 0:-499949952 rem: 0:0 now: 1343779199:25286937 diff: 0:-499956957 rem: 0:0 now: 1343779199:25332647 diff: 0:-499954290 rem: 0:0 now: 1343779199:25374189 diff: 0:-499958458 rem: 0:0 now: 1343779199:25413411 diff: 0:-499960778 rem: 0:0 ... # dmesg [ 161.756872] Clock: inserting leap second 23:59:60 UTC
With the new 2.6.32-42.95 kernel, here's the output: # uname -a Linux lucid 2.6.32-42-generic #95-Ubuntu SMP Wed Jul 25 15:57:54 UTC 2012 i686 GNU/Linux root@lucid:/home/ubuntu/Downloads# ./leap_seconds now: 1343692791:233925009 diff: 0:178887 rem: 0:0 now: 1343692791:734525073 diff: 0:600064 rem: 0:0 now: 1343692792:234689367 diff: 0:164294 rem: 0:0 now: 1343692792:734955710 diff: 0:266343 rem: 0:0 now: 1343692793:235121427 diff: 0:165717 rem: 0:0 now: 1343692793:735387972 diff: 0:266545 rem: 0:0 now: 1343692794:235636709 diff: 0:248737 rem: 0:0 now: 1343692794:735885332 diff: 0:248623 rem: 0:0 now: 1343692795:236064344 diff: 0:179012 rem: 0:0 now: 1343692795:736370441 diff: 0:306097 rem: 0:0 now: 1343692796:236552965 diff: 0:182524 rem: 0:0 now: 1343692796:736751874 diff: 0:198909 rem: 0:0 now: 1343692797:236931281 diff: 0:179407 rem: 0:0 now: 1343692797:737179866 diff: 0:248585 rem: 0:0 now: 1343692798:237285693 diff: 0:105827 rem: 0:0 now: 1343692798:737387092 diff: 0:101399 rem: 0:0 now: 1343692799:237472566 diff: 0:85474 rem: 0:0 now: 1343692799:737590980 diff: 0:118414 rem: 0:0 now: 1343692800:237755920 diff: 0:164940 rem: 0:0 now: 1343692800:737882098 diff: 0:126178 rem: 0:0 now: 1343692801:238105101 diff: 0:223003 rem: 0:0 now: 1343692801:738282994 diff: 0:177893 rem: 0:0 now: 1343692802:238484975 diff: 0:201981 rem: 0:0 now: 1343692802:739666912 diff: 0:1181937 rem: 0:0 now: 1343692803:239852875 diff: 0:185963 rem: 0:0 now: 1343692803:740122243 diff: 0:269368 rem: 0:0 now: 1343692804:240333133 diff: 0:210890 rem: 0:0 now: 1343692804:740595533 diff: 0:262400 rem: 0:0 now: 1343692805:240814256 diff: 0:218723 rem: 0:0 ... # dmesg [ 53.648003] Clock: inserting leap second 23:59:60 UTC I'm tagging this bug as verified for Lucid. ** Tags removed: verification-needed-lucid ** Tags added: verification-done-lucid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1020285 Title: Addition of leap second causes spuriously high CPU usage and futex lockups To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/base-files/+bug/1020285/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
