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Futex_wait_bitset_private Etimedout (connection Timed Out)


In most cases, the issues were related to memory overcommitment. It always runs in background via cron. Fuss, Futexes and Furwocks: Fast Userlevel Locking in Linux (from proceedings of the Ottawa Linux Symposium 2002), ⟨http://kernel.org/doc/ols/2002/ols2002-pages-479-495.pdf⟩ Hart, D., 2009. Is the application doing a large amount of GC in any case - i.e more than once a second. this contact form

FUTEX_CLOCK_REALTIME changes the clock source from CLOCK_MONOTONIC to CLOCK_REALTIME. 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. Futexes Are Tricky, ⟨http://www.akkadia.org/drepper/futex.pdf⟩ Futex example library, futex-*.tar.bz2 at ⟨ftp://ftp.kernel.org/pub/linux/kernel/people/rusty/⟩ COLOPHON top This page is part of release 4.09 of the Linux man-pages project. No heap or tuning parameters; the users just seem to be accepting defaults:/software/MIG/sun/jdk1.6.0_14//bin/java -Djava.util.logging.config.file=/software/MIG/apache-tomcat-6.0.20-dev/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/software/MIG/apache-tomcat-6.0.20-dev/endorsed -classpath :/software/MIG/apache-tomcat-6.0.20-dev/bin/bootstrap.jar -Dcatalina.base=/software/MIG/apache-tomcat-6.0.20-dev -Dcatalina.home=/software/MIG/apache-tomcat-6.0.20-dev -Djava.io.tmpdir=/software/MIG/apache-tomcat-6.0.20-dev/temp org.apache.catalina.startup.Bootstrap startHow many VMs are running on this ESX host? https://github.com/golang/go/issues/11019

Futex_wait_bitset_private Etimedout (connection Timed Out)

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 Top TrevorH Forum Moderator Posts: 17565 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, linux virtual-machine futex share|improve this question asked Feb 4 '15 at 12:06 ptan 4118 FUTEX_WAIT_BITSET_PRIVATE = FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG. "FUTEX_PRIVATE_FLAG indicates that this shared futex variable is in a You signed in with another tab or window.

BTW, on Fedora, some users experience the same issue : http://forums.fedoraforum.org/showthrea … 246&page=2 Offline Pages: 1 Index »Kernel & Hardware »random 100% CPU kernel when running java Board footer Jump to futex resumed> ) = 0 futex(0x7f63fc9c5518, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x7f63fc7c8f54, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x7f63fc7c8f50, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x7f63fd9e6e64, FUTEX_WAIT_PRIVATE, 7219, NULL <... Thanks! <... Futex Resumed> ) = -1 Etimedout (connection Timed Out) 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

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 User space can detect this situation via the presence of the FUTEX_OWNER_DIED bit and is then responsible for cleaning up the stale state left over by the dead owner. The indexer process just seems to grind to a halt. futex resumed> ) = -1 ETIMEDOUT (Connection timed out) 12467 12:50:29 futex(0x969ba28, FUTEX_WAKE_PRIVATE, 1) = 0 12467 12:50:29 gettimeofday({1365702629, 760854}, NULL) = 0 12467 12:50:29 clock_gettime(CLOCK_MONOTONIC, {5867097, 90650189}) = 0 12467

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 Futex_wait_bitset_private Java Why study finite-dimensional vector spaces in the abstract if they are all isomorphic to R^n? See futex(7) for more detail on how to use futexes. How do I find more information on those fds?

Futex Etimedout (connection Timed Out)

See if the times match your own observations. http://www.redmine.org/boards/2/topics/31731 I don't know, though, why it returns {fd=16, events=POLLIN} if there's nothing to read() from it.. –grawity Jun 13 '12 at 13:34 Do you mean that when poll() is Futex_wait_bitset_private Etimedout (connection Timed Out) We recommend upgrading to the latest Safari, Google Chrome, or Firefox. Futex Etimedout Java Java in a VM is particularly sensitive to having its heap ballooned or swapped.In our single CPU case, there is no memory ballooning, and no swapping going on.

Please file a new issue if you found a bug. http://homecomputermarket.com/connection-timed/connection-timed-out-with-aspmx2-googlemail-com.html If the timeout is not NULL, the structure it points to specifies a timeout for the wait. (This interval will be rounded up to the system clock granularity, and is guaranteed 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 For reference, I'm on Debian squeeze:uname -a: Linux MyMachine 2.6.32-5-686 #1 SMP Sun May 6 04:01:19 UTC 2012 i686 GNU/Linuxcat /etc/debian_version: 6.0.5ruby -v: ruby 1.8.7 (2010-08-16 patchlevel 302) [i486-linux]rails -v: Rails Futex_wait_private Etimedout

However, waking all of the threads in this manner would be pointless because all except one of the threads would immediately block on lock A again. clock_gettime resumed> {1365702629, 722366764}) = 0 14670 12:50:29 <... Try again. navigate here If timeout is NULL, the operation can block indefinitely.

The uaddr2 argument is ignored. Linux Futex Bug I'll see if I can reduce the number of processes a bit to see if that makes any difference. futex resumed> ) = -1 ETIMEDOUT (Connection timed out)[pid 24938] futex(0x7f5270102428, FUTEX_WAKE_PRIVATE, 1) = 0[pid 24938] futex(0x7f5270102454, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, {1357409542, 89241000}, ffffffff [pid 24947] <...

On all platforms, futexes are four-byte integers that must be aligned on a four-byte boundary.

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. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Other services encountered bugs such as Mozilla, and some social networks. Futex_wake_private DESCRIPTION top The futex() system call provides a method for waiting until a certain condition becomes true.

We can see the futex system call. [pid 2299] select(4, [3], NULL, NULL, NULL [pid 2301] <... Several higher-level programming abstractions are implemented via futexes, including POSIX semaphores and various POSIX threads synchronization mechanisms (mutexes, condition variables, read-write locks, and barriers). The application just isn't responding sensibly to web requests at all, but when I log into the VM and run top, I see the tomcat server using about 30% CPU, and his comment is here The loading of the futex word's value, the comparison of that value with the expected value, and the actual blocking will happen atomically and will be totally ordered with respect to

clock_gettime resumed> {1365702629, 722496326}) = 0 12473 12:50:29 <... See "ERRORS" in read(2), write(2) and so on. Re: Java Performance on VMware ESX tcutts Aug 4, 2009 6:36 AM (in response to tommyodom) tommyodom wrote:For what it is worth, I too have been seeing these problems trying to When using either -XX:UseSerialGC or the combination of -XX:ParallelGCThreads=1 and -XX:UseParallelOldGC, I no longer hit the 100% cpu usage problem in my initial testing.

sagar8192 commented Mar 6, 2016 @bradfitz Lemme try my code with go 1.6. 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