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Futex Resumed Connection Timed Out

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No other systems calls indicative of any I/O to the outside world. You should try latest Java7 release. If this value is greater than val, then the difference is the number of waiters requeued to the futex for the futex word at uaddr2. EINVAL (FUTEX_CMP_REQUEUE_PI) The val argument is not 1. http://smartnewsolutions.com/connection-timed/connection-timed-out-with.html

FUTEX_UNLOCK_PI Returns 0 if the futex was successfully unlocked. Like Show 0 Likes (0) Actions 12. FUTEX_REQUEUE Returns the number of waiters that were woken up. This is what strace shows: 9089 futex(0x7fdd80862528, FUTEX_WAKE_PRIVATE, 1) = 0 9089 futex(0x7fdd81e145a4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, {1374870092, 226655000}, ffffffff 9085 <... additional hints

Futex_wait_bitset_private Etimedout (connection Timed Out)

futex resumed> ) = 0 futex(0x7f63fcf3e728, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x7f63fcee6ea4, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x7f63fcee6ea0, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x7f63fd2fab44, FUTEX_WAIT_PRIVATE, 7283, NULL <... ENOSYS (FUTEX_LOCK_PI, FUTEX_TRYLOCK_PI, FUTEX_UNLOCK_PI, FUTEX_CMP_REQUEUE_PI, FUTEX_WAIT_REQUEUE_PI) A run-time check determined that the operation is not available. https://bugzilla.redhat.com/show_bug.cgi?id=879801 This is very similar to my probleam, but my khugepaged process is normal, and the load is always nearly zero. FUTEX_WAKE_OP allows such cases to be implemented without leading to high rates of contention and context switching.

By using strace -f -c -p pid to collect syscall info, i found that. When a client submits a larger amount of data (~10MB) to the server, which should be received on TCP 9090, the client seems to hang and not get a response from So anyone met the same probleam or familiar with this issue? Futex_clock_realtime In the cases where callers are forced into the kernel (i.e., required to perform a futex() call), they then deal directly with a so-called RT-mutex, a kernel locking mechanism which implements

Note: for FUTEX_WAIT, timeout is interpreted as a relative value. Futex Wait What does the expression 'seven for seven thirty ' mean? The PID of the original process is 6230. –user160910 Jul 24 '13 at 18:10 The futex syscall is the only one that got made before the TCP connection was 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 <...

How does President Duterte's anti-drug campaign affect travelers in the Philippines? Futex_wait Java 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 on uaddr via FUTEX_LOCK_PI (instead clock_gettime resumed> {1365702629, 722767741}) = 0 12459 12:50:29 <... The op component has one of the following values: FUTEX_OP_SET 0 /* uaddr2 = oparg; */ FUTEX_OP_ADD 1 /* uaddr2 += oparg; */ FUTEX_OP_OR 2 /* uaddr2 |= oparg; */ FUTEX_OP_ANDN

Futex Wait

The waiter can be removed from the wait on uaddr without requeueing on uaddr2 via a FUTEX_WAKE operation in another task. futex resumed> ) = -1 ETIMEDOUT (Connection timed out) [pid 2301] futex(0x989a8c8, FUTEX_WAKE_PRIVATE, 1) = 0 [pid 2301] futex(0x96e38b8, FUTEX_WAKE_OP_PRIVATE, 1, Futex_wait_bitset_private Etimedout (connection Timed Out) futex resumed> ) = -1 ETIMEDOUT (Connection timed out) 191 <... Futex Linux If another thread changed the value of the futex word after the calling thread decided to block based on the prior value, and if the other thread executed a FUTEX_WAKE operation

Priority inversion is the problem that occurs when a high- priority task is blocked waiting to acquire a lock held by a low- priority task, while tasks at an intermediate priority Check This Out PID 6231 does not yet exist in the process table. See the description of FUTEX_WAKE_BITSET for further details. If timeout is not NULL, the structure it points to specifies an absolute timeout for the wait operation. Futex Eagain (resource Temporarily Unavailable)

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_FD Returns the new file descriptor associated with the futex. And my system is also multi core and large memory. Source The machine is not physically heavily loaded - CPU utilisation is about 25%, RAM about 56%What is the total amount of memory assigned to powered-on VM? 4GBHave you run the same

When running java (1.7.0_10, x64, standard kernel) I notice full utilization of all cores; and it's kernel time.The machine quickly freezes so it's kind of hard to investigate...$ strace -p 15775 Restart_syscall It is easiest first step. –sibnick Sep 1 '15 at 7:01 @bforevdr Seems like kernel problem, have you tried re-set the date of your system and try again? This in turn requires that the user-space value is updated accordingly.

This is called when the user-space value at uaddr cannot be changed atomically from a TID (of the owner) to 0.

I have noticed all nscd (name service cache daemon - required for ldap auth) processes in the virtual machines are becomes cpu hog. Somewhere between "too small" and "too large" lies the size that is just right.- Scott Hayes Offline #5 2013-01-05 18:16:27 tcn Member Registered: 2011-09-30 Posts: 24 Re: random 100% CPU kernel FUTEX_CMP_REQUEUE_PI Returns the total number of waiters that were woken up or requeued to the futex for the futex word at uaddr2. Epoll_wait The uaddr2, val, timeout, and val3 arguments are ignored.

The uaddr2, val, and val3 arguments are ignored. FUTEX_REQUEUE (since Linux 2.6.0) This operation performs the same task as FUTEX_CMP_REQUEUE (see below), except that no check is made using the value in val3. (The argument val3 is ignored.) FUTEX_CMP_REQUEUE Share This Page current community blog chat Server Fault Meta Server Fault your communities Sign up or log in to customize your list. have a peek here FUTEX_WAKE_BITSET (since Linux 2.6.25) This operation is the same as FUTEX_WAKE except that the val3 argument is used to provide a 32-bit bit mask to the kernel.

leap second. This bit mask, in which at least one bit must be set, is stored in the kernel- internal state of the waiter. futex resumed> ) = 0 futex(0x7f63fd9e4e08, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x7f63fd3a08e4, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x7f63fd3a08e0, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x7f63fc7c8f54, FUTEX_WAIT_PRIVATE, 7225, NULL <... CONFORMING TO top This system call is Linux-specific.

Otherwise, the operation wakes up a maximum of val waiters that are waiting on the futex at uaddr. Linux 2016-07-17 FUTEX(2) Copyright and license for this manual page HTML rendering created 2016-12-12 by Michael Kerrisk, author of The Linux Programming Interface, maintainer of the Linux man-pages project. futex resumed> ) = 0 191 <... 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

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