Java Error Unable To Create New Native Thread
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vote 62 down vote favorite 17 We are getting "java.lang.OutOfMemoryError : unable to create new native Thread" on 8GB RAM VM after 32k threads (ps -eLF| grep -c java) However, "top" and "free -m" shows 50% free memory available. JDk is 64 bit and tried with both HotSpot and JRockit.Server has Linux 2.6.18 We also tried OS stack size (ulimit -s) tweaking and max process(ulimit -u) limits, limit.conf elasticsearch java.lang.outofmemoryerror: unable to create new native thread increase but all in vain. Also we tried almost all possible of heap size combinations, keeping it low, high etc. The script we use to run application is /opt/jrockit-jdk1.6/bin/java -Xms512m -Xmx512m -Xss128k -jar JavaNatSimulator.jar /opt/tools/jnatclients/natSimulator.properties Thanks for the reply. We have tried editing /etc/security/limits.conf and ulimit but still that same [root@jboss02 ~]# ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 72192 max locked memory (kbytes, -l) 32 max memory size (kbytes, -m) unlimited open files (-n) 65535 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes (-u) 72192 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited java out-of-memory share|improve this question edited May 28 '13 at 11:00 asked May 28 '13 at 10:04 Deepak Tewani 339137 8 Operating systems have limits on the number of threads that you can create. Why are you creating more than 32k threads? Your system does most likely not have thousands of processor cores, creating so many threads is not useful. Use a thread pool (ExecutorServic
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings unable to create new native thread eclipse and policies of this site About Us Learn more about Stack Overflow hadoop java.lang.outofmemoryerror: unable to create new native thread the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation java.lang.outofmemoryerror: unable to create new native thread android studio Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it http://stackoverflow.com/questions/16789288/java-lang-outofmemoryerror-unable-to-create-new-native-thread only takes a minute: Sign up Unable to create new native thread error - but very few threads are in use [duplicate] up vote 13 down vote favorite 1 This question already has an answer here: Java: Unable to create new native thread 6 answers We have an application that is widely deployed (several hundred workstations running it). At one http://stackoverflow.com/questions/19966849/unable-to-create-new-native-thread-error-but-very-few-threads-are-in-use site (and only one site - our product is widely deployed to many environments), we randomly get the following error: java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start0(Native Method) at java.lang.Thread.start(Unknown Source) Operating system is Windows 7 64 bit We are running in a 32 bit JVM ( 1.7.0_45) Using Windows Task Manager, I can see that the process has 39 native threads (not very many), so we don't have a thread leak in our app... There are no other processes consuming lots of threads (Explorer has 35, jvisualvm has 24, iexplore has 20, ... I don't have an exact count, but we are probably looking at maybe 300 threads for the user total). I have attempted to attach JVisualVM, but it fails to connect to the process (probably b/c of thread exhaustion). But from the metrics I can obtain from JVisualVM, the number of Java threads is about 22 live and 11 daemon. The heap is well behaved - heap is 500MB with 250MB actually used. The process is launched with -Xmx512m Our process is showing M
Guides Zones | Agile Big Data Cloud Database DevOps Integration IoT Java Mobile Performance Web Dev Let's be friends: OutOfMemoryError: Unable to Create New Native Thread https://dzone.com/articles/outofmemoryerror-unable-create – Problem Demystified by Pierre - Hugues Charbonneau · Oct. 04, 12 · Java Zone Like (0) Comment (1) Save Tweet {{ articles[0].views | formatCount}} Views https://bbs.archlinux.org/viewtopic.php?id=207255 Edit Delete {{ articles[0].isLocked ? 'Enable' : 'Disable' }} comments {{ articles[0].isLimited ? 'Remove comment limits' : 'Enable moderated comments' }} Join the DZone community and get the unable to full member experience. Join For Free Learn more about the advantages of moving from a monolithic to microservices architecture. Brought to you in partnership with IBM. As you may have seen from my previous tutorials and case studies, Java Heap Space OutOfMemoryError problems can be complex to pinpoint and resolve. One of the common problems I have unable to create observed from Java EE production systems is OutOfMemoryError: unable to create new native thread; error thrown when the HotSpot JVM is unable to further create a new Java thread. This article will revisit this HotSpot VM error and provide you with recommendations and resolution strategies. If you are not familiar with the HotSpot JVM, I first recommend that you look at a high level view of its internal HotSpot JVM memory spaces. This knowledge is important in order for you to understand OutOfMemoryError problems related to the native (C-Heap) memory space. OutOfMemoryError: unable to create new native thread – what is it? Let’s start with a basic explanation. This HotSpot JVM error is thrown when the internal JVM native code is unable to create a new Java thread. More precisely, it means that the JVM native code was unable to create a new “native” thread from the OS (Solaris, Linux, MAC, Windows...). We can clearly see this logic from the OpenJDK 1.6 and 1.7 implementations as
1 2 Next #1 2016-01-07 09:26:11 kaouete Member Registered: 2008-12-22 Posts: 37 "unable to create new native thread" or "fork failed" since linux 4.3 Hi,I came back from vacations and I started to get lots of errors when running many processes (in particular Java ones that creates many threads) such as:OutOfMemoryError: unable to create new native thread from Javabut alsofork failed: resource temporarily unavailableWhen executing commands in bash.It seems that ulimit -a tells me that the number of maximum file descriptor I can open is 1024, that seems a bit low, and checking my coworker settings, his debian is using 65536 as a max value!If I try to set it to this value with "ulimit -n 65536" I get the error: ulimit: value exceeds hard limitIs there something that changed lately that I am not aware of in Archlinux that resulted to this situation?EDIT: The problem appeared when the package linux was upgraded from 4.2.5-1 to 4.3.3-2Thank you for your help :) Last edited by kaouete (2016-01-07 11:59:23) Offline #2 2016-01-07 09:56:11 lucke Member From: Poland Registered: 2004-11-30 Posts: 4,018 Re: "unable to create new native thread" or "fork failed" since linux 4.3 My Debian server has it set to 1024.You should be able to set it in /etc/security/limits.conf. Offline #3 2016-01-07 10:16:10 codyzu Member Registered: 2016-01-07 Posts: 3 Re: "unable to create new native thread" or "fork failed" since linux 4.3 I'm having the same problem with a Java application. Which JVM are you using? I'm using jdk 8u66-1 from the AUR (I have to use Oracle java for my work). I recently switched to Arch on my development machine and have not been able to run my java application (works in ubuntu 14.04 with the same JVM).Like you I played with the ulimits stuff and after a lot of trial and error, my limits are huge:core file size (blocks, -c) 0 data seg size (kbytes