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Futex_wait_bitset_private Etimedout (connection Timed Out)

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futex resumed> ) = -1 ETIMEDOUT (Connection timed out) 12473 12:50:29 futex(0x4fb17928, FUTEX_WAKE_PRIVATE, 1) = 0 12473 12:50:29 clock_gettime(CLOCK_MONOTONIC, {5867097, 96548969}) = 0 12473 12:50:29 clock_gettime(CLOCK_MONOTONIC, {5867097, 96595835}) = 0 12473 EINVAL The operation specified in futex_op employs one or both of the pointers uaddr and uaddr2, but one of these does not point to a valid object—that is, the address is ENFILE (FUTEX_FD) The system-wide limit on the total number of open files has been reached. The symptoms are the same.If the workarounds or a different OS do not help, the following information might help me to better understand what might be happening.Which JVM are you using? http://3ecommunications.net/connection-timed/squid-110-connection-timed-out.html

clock_gettime resumed> {1365702629, 722767741}) = 0 12459 12:50:29 <... Topics: Active | Unanswered Index »Kernel & Hardware »random 100% CPU kernel when running java Pages: 1 #1 2013-01-02 11:00:42 tcn Member Registered: 2011-09-30 Posts: 24 random 100% CPU kernel when Note: for FUTEX_WAIT, timeout is interpreted as a relative value. atoi(argv[1]) : 5; /* Create a shared anonymous mapping that will hold the futexes. https://meenakshi02.wordpress.com/2011/02/02/strace-hanging-at-futex/

Futex_wait_bitset_private Etimedout (connection Timed Out)

In my experimentation I also found that setting the -XX:ParallelGCThreads=1 had no apparent effect until I also set -XX:UseParallelOldGC which tells the JVM to use parallel GC for both young and The uaddr2 argument is ignored. Most commonly, val is specified as either 1 (wake up a single waiter) or INT_MAX (wake up all waiters).

I'll see if I can reduce the number of processes a bit to see if that makes any difference. Run the following command: ps -efL|grep Now, you can trace each of the thread using it's pid as follows: strace -p pid-of-a-thread So you can run strace for a They didn't seem particularly interested in the fact that the same application on the same stack works fine on a physical computer with two cores but not on a virtual machine What Is Futex Browse other questions tagged linux eclipse debug lsof strace or ask your own question.

The machine is not doing any significant I/O, or using any CPU. Futex Etimedout (connection Timed Out) The FUTEX_WAKE operation is equivalent to FUTEX_WAKE_BITSET with val3 specified as FUTEX_BITSET_MATCH_ANY; that is, wake up any waiter(s). On a few occasions, I have worked with customers who were experiencing performance issues with their Java deployments on ESX. http://superuser.com/questions/436250/debugging-connection-timeouts-using-strace In order to share a futex between processes, the futex is placed in a region of shared memory, created using (for example) mmap(2) or shmat(2). (Thus, the futex word may have

Null check OR isEmpty Check Dividing rational expression? Futex_wait Java The remaining waiters are removed from the wait queue of the source futex at uaddr and added to the wait queue of the target futex at uaddr2. Reload to refresh your session. I found the eclipse process using: $ ps ax | grep java 5546 ?

Futex Etimedout (connection Timed Out)

The indexer process just seems to grind to a halt. OS:Redhat 6.1, kernal version 2.6.31 JDK:1.7.0_05 CPU:X5650, 24cores Memory :24GB and 48GB java io futex huge-pages share|improve this question edited Sep 1 '15 at 6:23 asked Aug 28 '15 at 3:35 Futex_wait_bitset_private Etimedout (connection Timed Out) This is a JDBC connection using SUN (Oracle) java 1.7 Googling this seems to be [maybe] related to: a.) IPV6 enabled class where IPV6 is not enabled on the networks involved Futex_wait Strace If the thread starts to sleep, it is considered a waiter on this futex word.

EXAMPLE top The program below demonstrates use of futexes in a program where a parent process and a child process use a pair of futexes located inside weblink The waiter can be removed from the wait on uaddr without requeueing on uaddr2 via a FUTEX_WAKE operation in another task. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. The purpose of the comparison with the expected value is to prevent lost wake-ups. Futex_wait Bug

Deadlock?", 56Exception occured due to No live threads left. What does Joker “with TM” mean in the Deck of Many Things? EINVAL (FUTEX_WAKE, FUTEX_WAKE_OP, FUTEX_WAKE_BITSET, FUTEX_REQUEUE, FUTEX_CMP_REQUEUE) The kernel detected an inconsistency between the user-space state at uaddr and the kernel state— that is, it detected a waiter which waits in FUTEX_LOCK_PI navigate here EINTR A FUTEX_WAIT or FUTEX_WAIT_BITSET operation was interrupted by a signal (see signal(7)).

If so, why is a read() still performed when there is no data available? –jabalsad Jun 13 '12 at 13:36 Nevermind, your added comment answered my question. –jabalsad Jun Futex_wait_private Hang Please type your message and try again. 1 2 Previous Next 27 Replies Latest reply: Oct 28, 2011 5:54 AM by shishir08 Java Performance on VMware ESX haroldr May 26, 2009 Besides the basic wait and wake-up futex functionality, there are further futex operations aimed at supporting more complex use cases.

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Skip to content Search Meenakshi's Blog Strace - hanging at futex,FUTEX_WAIT Whenever i am done with all the debugging tools and techniques to debug never ending processes, and still with no why? Consequently, the low- priority task makes no progress toward releasing the lock, and the high-priority task remains blocked. Java Futex Do they wish to personify BBC Worldwide?

linux eclipse debug lsof strace share|improve this question edited Jun 13 '12 at 12:33 user49740 2,1811325 asked Jun 13 '12 at 11:33 jabalsad 3442415 add a comment| 2 Answers 2 active ENOSYS Invalid operation specified in futex_op. I can imagine, if it's a virtual SMP box, that timing issues are likely to be worse than on a single CPU. his comment is here What if you don't have the source code?

Attaches the waiter to the futex (i.e., the waiter is enqueued on the RT-mutex waiter list). FUTEX_UNLOCK_PI must be called only on a futex owned by the calling thread, as defined by the value policy, otherwise the error EPERM results. * FUTEX_WAIT_REQUEUE_PI pairs with FUTEX_CMP_REQUEUE_PI. If timeout is NULL, the call blocks indefinitely. Re: Java Performance on VMware ESX tommyodom Jul 19, 2009 2:17 PM (in response to tcutts) For what it is worth, I too have been seeing these problems trying to run

RETURN VALUE top In the event of an error (and assuming that futex() was invoked via syscall(2)), all operations return -1 and set errno to indicate the FUTEX_TRYLOCK_PI Returns 0 if the futex was successfully locked. It donsn't work for me. Can the integral of a function be larger than function itself?

sagar8192 commented Mar 6, 2016 @bradfitz Lemme try my code with go 1.6. Sometimes you don't see any log messages in any of the servers when you are troubleshooting, this command becomes very useful in such cases. When jumping a car battery, why is it better to connect the red/positive cable first? In Russia, are the anniversaries of the various events that occurred in 1917 and '18 celebrated according to the Old Style or the New Style calendar?