real    108m1.284s
user    108m51.617s
sys     307445734m57.875s

307445734 min 57.875s is something really went crazy. Linux kernel 3.1.5 x86_64. A pitty thing regarding this issue is it's hard to search on web since keywords are quite irrelevant to this very problem.

  • Beware that there could be two times in your system, /usr/bin/time and possibly the bash built-in command (maybe other shells have one, too). So maybe the respectively other one works fine. Is it consistent behavior or a one-time thing? (Also there are other ways to measure things, e.g. Systemtap]
    – sr_
    Commented Dec 16, 2011 at 13:24
  • @sr_, it's a built-in, usually. But nevermind, the reason is kernel, not user space. I'm in email exchange with kernel devs now, we'll see…
    – poige
    Commented Dec 16, 2011 at 19:49
  • @sr_, the issue's found.
    – poige
    Commented Dec 18, 2011 at 16:49

1 Answer 1


BFS's bug.

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