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Futex_wait_bitset_private Etimedout (connection Timed Out)

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The interpretation of the final integer argument, val3, depends on the operation. EINVAL (FUTEX_CMP_REQUEUE_PI) The kernel detected an inconsistency between the user-space state at uaddr and the kernel state; that is, the kernel detected a waiter which waits via FUTEX_WAIT or FUTEX_WAIT_BITESET on Browse other questions tagged java io futex huge-pages or ask your own question. select resumed> ) = 0 (Timeout) [pid 47155] 1433139204.018508 clock_gettime(CLOCK_MONOTONIC, [pid 47156] 1433139204.018525 select(0, NULL, NULL, NULL, {0, 100} [pid 47155] 1433139204.018541 <... http://itivityglobal.com/connection-timed/can-you-see-me-connection-timed-out.html

One use of futexes is for implementing locks. FUTEX_CMP_REQUEUE_PI (since Linux 2.6.31) This operation is a PI-aware variant of FUTEX_CMP_REQUEUE. FUTEX_WAKE_BITSET Returns the number of waiters that were woken up. I'll point to this thread in the dev board, maybe they have an idea. (1-7/7) Loading...

Futex_wait_bitset_private Etimedout (connection Timed Out)

A user-space program employs the futex() system call only when it is likely that the program has to block for a longer time until the condition becomes true. atoi(argv[1]) : 5; /* Create a shared anonymous mapping that will hold the futexes. So I guess the leap second could be the cause after all.

nscd (name service cache daemon) is required for effective ldap auth otherwise each identity operation will hit the ldap server. Re: Java Performance on VMware ESX tcutts Jun 17, 2009 6:43 AM (in response to haroldr) I'm glad you've been having success... About Us The Coding Forums is a place to seek help and ask questions relating to coding and programming languages. Futex Example futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable) 191 futex(0x61fb10, FUTEX_WAKE_PRIVATE, 1 192 futex(0x61fd04, FUTEX_WAIT_PRIVATE, 1082, NULL 190 <...

We recommend upgrading to the latest Safari, Google Chrome, or Firefox. Futex Vs Mutex Priority-inheritance futexes Linux supports priority-inheritance (PI) futexes in order to handle priority-inversion problems that can be encountered with normal futex locks. The machine doesn't appear to be doing anything at all, and yet the java process doesn't respond to the user, or do anything other than repeatedly call futex().Any ideas? https://groups.google.com/d/topic/drools-usage/dhU6_6cFWfs This can happen when the owner of the futex died.

When it locks up, top shows it consuming 10-30% of a core, perf top doesn't show it at all, and strace shows it repeatedly calling select(2) with a NULL fd list Pthread Futex clock_gettime resumed> {1365702629, 722767741}) = 0 12459 12:50:29 <... Linked ApplicationsLoading… DashboardsProjectsIssues Help Online Help Keyboard Shortcuts About JIRA JIRA Credits Log In New version of OpenVZ has been released! 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?

Futex Vs Mutex

futex resumed> ) = 0 futex(0x7f63fde9e6a8, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x7f63fcf091e4, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x7f63fcf091e0, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x7f63fd3a08e4, FUTEX_WAIT_PRIVATE, 7225, NULL <... https://github.com/golang/go/issues/11019 If a futex is already acquired (i.e., has a nonzero value), waiters must employ the FUTEX_LOCK_PI operation to acquire the lock. Futex_wait_bitset_private Etimedout (connection Timed Out) Is the binomial theorem actually more efficient than just distributing What would be your next deduction in this game of Minesweeper? Futex Connection Timed Out Not the answer you're looking for?

I lost my equals key. http://itivityglobal.com/connection-timed/deferred-connection-timed-out-with-mailhost.html Re: Java Performance on VMware ESX haroldr Jun 24, 2009 11:08 AM (in response to tcutts) I notice that you are using a guest OS (Debian GNU/Linux 5.0) that is not Re: Java Performance on VMware ESX tcutts Jul 6, 2009 7:57 AM (in response to haroldr) haroldr wrote:I notice that you are using a guest OS (Debian GNU/Linux 5.0) that is A four-argument system call with the semantics described in this page was introduced in Linux 2.5.40. Futex Wait

The PI-futex operations are not implemented on all architectures and are not supported on some CPU variants. NOTES top Glibc does not provide a wrapper for this system call; call it using syscall(2). If there are more than val waiters, then the remaining waiters are removed from the wait queue of the source futex at uaddr and added to the wait queue of the this contact form and Guniguntala, D., 2009.

The load from uaddr is an atomic memory access (i.e., using atomic machine instructions of the respective architecture). Linux Futex Tutorial Tries to find the thread which is associated with the owner TID. 2. But when it went unnormal, there are only futex syscalls.

The arguments timeout, uaddr2, and val3 are ignored.

Welcome to the Coding Forums, the place to chat about anything related to programming and coding languages. The selection is done by a bit-wise AND of the "wake" bit mask (i.e., the value in val3) and the bit mask which is stored in the kernel- internal state of Was it the kernel or ruby or something else?Even after rebooting and setting the date manually, I still get this when stracing ruby 1.8 -f:[pid 7021] clock_gettime(CLOCK_REALTIME, {1341305908, 231893109}) = 0 Futex Example In C How can I take a photo through trees but focus on an object behind the trees?

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 Unfortunately the nscd process is still consuming 100% cpu. If this option is not set, the kernel measures the timeout against the CLOCK_MONOTONIC clock. navigate here If not, the operation fails with the error EAGAIN.

The options that may be included in futex_op are as follows: FUTEX_PRIVATE_FLAG (since Linux 2.6.22) This option bit can be employed with all futex operations. Like Show 0 Likes (0) Actions 10. The effect of FUTEX_WAIT_BITSET and FUTEX_WAKE_BITSET is to allow selective wake-ups among multiple waiters that are blocked on the same futex. When another process or thread performs a FUTEX_WAKE on the futex word, the file descriptor indicates as being readable with select(2), poll(2), and epoll(7) The file descriptor can be used to

futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable) 193 futex(0x61fd04, FUTEX_WAIT_PRIVATE, 1082, NULL 191 futex(0x61fae4, FUTEX_WAIT_BITSET_PRIVATE, 1042505, {57606, 972700863}, ffffffff 190 restart_syscall(<... I do not know the answer to that. FUTEX_WAIT_REQUEUE_PI (since Linux 2.6.31) Wait on a non-PI futex at uaddr and potentially be requeued (via a FUTEX_CMP_REQUEUE_PI operation in another task) onto a PI futex at uaddr2. The operation specified in futex_op is one of the following: FUTEX_WAIT (since Linux 2.6.0) This operation tests that the value at the futex word pointed to by the address uaddr still

A single word for "the space in between" Kids shuffling cards Why do shampoo ingredient labels feature the the term "Aqua"? ENOSYS The FUTEX_CLOCK_REALTIME option was specified in futex_op, but the accompanying operation was neither FUTEX_WAIT, FUTEX_WAIT_BITSET, nor FUTEX_WAIT_REQUEUE_PI. futex resumed> ) = 0 futex(0x7f63fc7c8168, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x7f63fd2fab44, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x7f63fd2fab40, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x7f63fde63c64, FUTEX_WAIT_PRIVATE, 7289, NULL <... What's the point of repeating an email address in "The Envelope" and the "The Header"?

This bit mask, in which at least one bit must be set, is stored in the kernel- internal state of the waiter. No guarantee is provided about which waiters are awoken (e.g., a waiter with a higher scheduling priority is not guaranteed to be awoken in preference to a waiter with a lower If you received this in error, please contact the sender and delete the material from any computer. -- http://www.freelists.org/webpage/oracle-l References: I'll buy you dinner if you can help me with strace/java Here is the output from strace (the offending line is in bold): 29673 16:36:47.747658 futex(0x2aac3f62a674, FUTEX_WAIT, 1, {0, 49972000} 29716 16:36:47.784379 <...

Thanks. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed clock_gettime resumed> {1365702629, 722558487}) = 0 12467 12:50:29 <... Most commonly, val is specified as either 1 (wake up a single waiter) or INT_MAX (wake up all waiters).

But from jstat -gcutil, the YGCT and FGCT was normal, only took serval seconds. –bforevdr Sep 1 '15 at 9:25 Can you check the paging I/O traffic (swapping) and FUTEX_CMP_REQUEUE Returns the total number of waiters that were woken up or requeued to the futex for the futex word at uaddr2. more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation now what?