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I'm using java application on linux system(Redhat 6.6). Some times this application charged CPU 100%.

This is proc strace.

[chgminer@perpscm CE]$ strace -p 18182
...
sched_yield()                           = 0
sched_yield()                           = 0
futex(0x7ff5ec021e54, FUTEX_WAIT_BITSET_PRIVATE, 1, {16502241, 759149277}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
futex(0x7ff5ec021e28, FUTEX_WAKE_PRIVATE, 1) = 0
...

strace printed "futex .. ETIMEOUT". So I guess "Leap Second Bug".

And I want to fix this problem. But the problem machine can not access some reason.

So I must reproduce this situation on other system(linux).

How can I reproduce this situation?

System Infomation

  • OS : Linux 2.6.32-504.el6.x86_64 (amd64)

  • Red Hat Enterprise Linux Server release 6.6 (Santiago)

jww
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  • Possible duplicate of [How can I reproduce "Leap Second Bug" on my linux system](https://stackoverflow.com/questions/44362726/how-can-i-reproduce-leap-second-bug-on-my-linux-system) – jww Jun 08 '17 at 05:59
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    Why do you think it's a leap second bug that's causing this? – tangrs Jun 08 '17 at 06:11
  • Also see [Resolve Leap Second Issues in Red Hat Enterprise Linux](https://access.redhat.com/articles/15145). According to Red Hat's article, *"At this time, we are not aware of upcoming leap second events"*. So it appears there have been no events recently to affect your software. Maybe something else is the problem??? – jww Jun 08 '17 at 06:18

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