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Etimedout Connection Timed Out Linux


It tells the kernel that the futex is process-private and not shared with another process (i.e., it is being used for synchronization only between threads of the same process). When releasing the lock, a thread has to first reset the lock state to not acquired and then execute a futex operation that wakes threads blocked on the lock flag used I'd say a firewall, because router port-forwards usually don't reset.To rule out her client, let her connect to a public server: ftp://ftp.debian.org for example. In Windows, it takes about 4 minutes before a port can be reused. _________________### BEGIN SIGNATURE BLOCK ###No support requests per PM! http://qaisoftware.com/connection-timed/futex-resumed-etimedout-connection-timed-out.html

Couldn't find a reason why time out happens. Also, I we have KVM virtual machines here only, perhaps the problem is additionally specific to this scenario RE: High CPU usage issue / leap second? - Added by Sergey Belov Top Profile Reply with quote idaknow Post subject: Re: ETIMEDOUT - Connection attempt timed outPostPosted: 2008-09-14 22:48 Offline 500 Command not understood Joined: 2008-09-14 22:38 Posts: 3 First name: The difference between the two is that the user can change the current time (or more realistically, the ntpd daemon can). Discover More

Futex_wait_bitset_private Etimedout (connection Timed Out)

See if the times match your own observations. The uaddr2 and timeout arguments are ignored. Plus: code is running much faster now. The operation to perform on the futex is specified in the futex_op argument; val is a value whose meaning and purpose depends on futex_op.

However, notwithstanding the prototype shown above, for some operations, the least significant four bytes are used as an integer whose meaning is determined by the operation. FUTEX_UNLOCK_PI Returns 0 if the futex was successfully unlocked. Top amol Posts: 3 Joined: 2012/06/22 07:29:46 Re: [SOLVED] java using 100% cpu on CentOS/RHEL 6 Quote Postby amol » 2012/07/27 11:43:35 The problem was solved after upgrading kernel to kernel-2.6.32-220 Futex Resumed> ) = -1 Etimedout (connection Timed Out) 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

Has power been stripped away from the US Constitution, during the Obama Administration? Futex -1 Etimedout (connection Timed Out) It then may pass the lock's flag as a futex word and the value representing the acquired state as the expected value to a futex() wait operation. Top TrevorH Forum Moderator Posts: 17646 Joined: 2009/09/24 10:40:56 Location: Brighton, UK Re: java using 100% cpu on CentOS/RHEL 6 Quote Postby TrevorH » 2012/07/03 15:08:03 Looks like it here too, https://access.redhat.com/solutions/880833 To indicate that this is required, the kernel sets the FUTEX_OWNER_DIED bit in the futex word along with the thread ID of the new owner.

It has all the answers.I have but since english isnt my native language i had a hard time understanding al the technical terms.I have one last question, the client doesnt update What Is Futex If you have any questions, please contact customer service. Requeue-PI: Making Glibc Cond‐ vars PI-Aware (from proceedings of the 2009 Real-Time Linux Work‐ shop), ⟨http://lwn.net/images/conf/rtlws11/papers/proc/p10.pdf⟩ Drepper, U., 2011. This load, the comparison with val3, and the requeueing of any waiters are performed atomically and totally ordered with respect to other operations on the same futex word.

  • What also seems to fix the issue is to just set the date: /etc/init.d/chrony stop date -s "`date`" /etc/init.d/chrony start You don't even have to restart Apache afterwards.
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  • Has anybody faced similar situation?Any clues or references would be very helpful.
  • EPERM (FUTEX_LOCK_PI, FUTEX_TRYLOCK_PI, FUTEX_CMP_REQUEUE_PI) The caller is not allowed to attach itself to the futex at uaddr (for FUTEX_CMP_REQUEUE_PI: the futex at uaddr2). (This may be caused by a state corruption
  • Your server can't establish connectivity with the host you're trying to make requests to.
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  • Open Source Communities Comments Helpful 2 Follow How much time is it till "Connection timed out"(ETIMEDOUT/110)?
  • PI futexes are operated on by specifying one of the values listed below in futex_op.
  • If timeout is NULL, the operation can block indefinitely.
  • The PI-futex operations are not implemented on all architectures and are not supported on some CPU variants.

Futex -1 Etimedout (connection Timed Out)

It is typically used as a blocking construct in the context of shared-memory synchronization. https://forum.filezilla-project.org/viewtopic.php?t=7964 Both FUTEX_REQUEUE and FUTEX_CMP_REQUEUE can be used to avoid "thundering herd" wake-ups that could occur when using FUTEX_WAKE in cases where all of the waiters that are woken need to acquire Futex_wait_bitset_private Etimedout (connection Timed Out) Arguments The uaddr argument points to the futex word. Futex_wait_private Etimedout 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

The purpose of the comparison with the expected value is to prevent lost wake-ups. his comment is here asked 1 year ago viewed 2187 times Related 31Why is a pthread mutex considered “slower” than a futex?5Linux futex syscall spurious wakes with return value 0?0Futex code walkthrough- returning EFAULT2Can strace Other than differences in the handling of the timeout argument, the FUTEX_WAIT operation is equivalent to FUTEX_WAIT_BITSET with val3 specified as FUTEX_BITSET_MATCH_ANY; that is, allow a wake-up by any waker. Why are there no Imperial KX-series Security Droids in the original trilogy? Futex Etimedout Java

futex resumed> ) = -1 ETIMEDOUT (Connection timed out) Last edited by tcn (2013-01-06 17:37:36) Offline #6 2013-01-05 18:18:08 tcn Member Registered: 2011-09-30 Posts: 24 Re: random 100% CPU This indicates either state corruption or that the kernel found a waiter on uaddr which is waiting via FUTEX_WAIT or FUTEX_WAIT_BITSET. FUTEX_CMP_REQUEUE Returns the total number of waiters that were woken up or requeued to the futex for the futex word at uaddr2. this contact form Register If you are a new customer, register now for access to product evaluations and purchasing capabilities.

FUTEX_LOCK_PI Returns 0 if the futex was successfully locked. Etimedout (connection Timed Out) Strace If this value is greater than val, then difference is the number of waiters requeued to the futex for the futex word at uaddr2. futex(0x7f4461035200, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, {1, 0}, ffffffff) = -1 ETIMEDOUT (Connection timed out) Anyone knows the reason?

This can happen when the owner of the futex died.

Terms Privacy Security Status Help You can't perform that action at this time. atoi(argv[1]) : 5; /* Create a shared anonymous mapping that will hold the futexes. I had no problems accessing my websites until I got the latest update for filezilla - now I keep getting a connection timed out error as well. Futex Example FUTEX_WAKE_OP Returns the total number of waiters that were woken up.

The remaining arguments (timeout, uaddr2, and val3) are required only for certain of the futex operations described below. I have no problem logging in with the ftp app in HTML-Kit or using the ftp commands at the dos prompt, nor do I have any problems logging in to my If more than one waiter exists, the enqueueing of the waiter is in descending priority order. (For information on priority ordering, see the discussion of the SCHED_DEADLINE, SCHED_FIFO, and SCHED_RR scheduling http://qaisoftware.com/connection-timed/control-connection-timed-out-ftp.html After that, the kernel: 1.

Only few files are remaining. 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. The caller must close the returned file descriptor after use. current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.

EDEADLK (FUTEX_LOCK_PI, FUTEX_TRYLOCK_PI, FUTEX_CMP_REQUEUE_PI) The futex word at uaddr is already locked by the caller. The val2 argument specifies an upper limit on the number of waiters that are requeued to the futex at uaddr2. User space cannot handle this condition in a race-free manner, but the kernel can fix this up and acquire the futex. EAGAIN (FUTEX_CMP_REQUEUE, FUTEX_CMP_REQUEUE_PI) The value pointed to by uaddr is not equal to the expected value val3.

Hot Network Questions Why would two species of predator with the same prey cooperate? The state of the lock (i.e., acquired or not acquired) can be represented as an atomically accessed flag in shared memory. Print all ASCII alphanumeric characters without using them What's the male version of "hottie"? The wait operation on uaddr is the same as for FUTEX_WAIT.

FUTEX_WAKE_BITSET Returns the number of waiters that were woken up. The load from uaddr is an atomic memory access (i.e., using atomic machine instructions of the respective architecture). Typical values to specify for val are 0 or 1. (Specifying INT_MAX is not useful, because it would make the FUTEX_CMP_REQUEUE operation equivalent to FUTEX_WAKE.) The limit value specified via val2 NOTES top Glibc does not provide a wrapper for this system call; call it using syscall(2).

On all platforms, futexes are four-byte integers that must be aligned on a four-byte boundary. When traced using strace, it shows following o/p continuously :Code: Select all> futex(0x7fb8000ac728, FUTEX_WAKE_PRIVATE, 1) = 0
> futex(0x7fb8000ac754, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, {1340347489,> 822867000}, ffffffff) = -1 ETIMEDOUT (Connection timed FUTEX_WAIT_BITSET Returns 0 if the caller was woken up.