100% cpu usage on CentOS/RHEL 6
david.holmes at oracle.com
Tue Jul 3 02:24:48 UTC 2012
Yes this sounds like the linux leap-second bug.
Despite a lot of ignorant comments on the web this is not a bug in Java.
But I would really appreciate it if someone experience this can send me
a stack trace from the problematic thread(s). I think I know what is
happening but need to confirm.
On 3/07/2012 12:02 AM, Mark Thornton wrote:
> On 02/07/12 14:45, Amol Kulkarni wrote:
>> I have a java app running on CentOS 6.0. It always runs in background via
>> cron. Sometimes this app goes into wait state while using 100% cpu.
>> My java version is :
>> java version "1.6.0_17"
>> OpenJDK Runtime Environment (IcedTea6 1.7.4) (rhel-1.21.b17.el6-x86_64)
>> OpenJDK 64-Bit Server VM (build 14.0-b16, mixed mode)
>> Other symptoms are :
>> a. One thread of the process seems to be in a loop waiting for something.
>> When traced using strace, it shows following o/p continuously :
>>> futex(0x7fb8000ac728, FUTEX_WAKE_PRIVATE, 1) = 0
>>> futex(0x7fb8000ac754, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME,
> Could it be related to this:
> Mark Thornton
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