Suddenly I have started getting following error from integration test cases. Using Java 8 so I added MAVEN_OPTS = -Xmx512m. But it did not work. What am I missing here and how can I fix it? Between it works fine on local machine.
SUREFIRE-859: Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000c9800000, 54001664, 0) failed; error='Cannot allocate memory' (errno=12)
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 54001664 bytes for committing reserved memory.
# An error report file with more information is saved as:
Looking at the error message, it looks like Java was not able to allocate enough memory, i.e. it's not Java's heap limit that's in the way but rather no more memory available to be given to Java by OS. Check that the machine is not running out of memory.
Related
Installed elasticsearch v5.5 in centos and ran the following command to initiate the service.
sudo service elasticsearch start
Getting following error while running the above command.
Starting elasticsearch: OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000085330000, 2060255232, 0) failed; error='Cannot allocate memory' (errno=12)
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 2060255232 bytes for committing reserved memory.
# An error report file with more information is saved as:
# /tmp/hs_err_pid15359.log
Suggest me how to fix this.
Elasticsearch starts with 2 GB of RAM as default in 5.X versions.
Assuming that you are using virtual machine, it seems like your VM has less free memory than 2GB. Try giving your VM more memory or change your Elasticsearch JVM settings in /etc/elasticsearch/jvm.options (for example set -Xms512m -Xmx512m).
i've got two computers running on Mac OS X El Capitan and Ubuntu 16.04 LTS. On both is Java SDK 1.8.0_101 installed.
When I try to start an game server on Ubuntu with more memory than available, I get the following output:
$ java -Xms200G -Xmx200G -jar craftbukkit.jar nogui
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00007f9b6e580000, 71582613504, 0) failed; error='Cannot allocate memory' (errno=12)
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 71582613504 bytes for committing reserved memory.
# An error report file with more information is saved as:
#
On Mac OS I don't get this error:
$ java -Xms200G -Xmx200G -jar craftbukkit.jar nogui
Loading libraries, please wait...
Both computers have 8GB of memory. I also tried with an other Apple computer - same problem.
Is that a bug of java mac version?
(Is there a way to force limit the memory usage e.g. to 1GB? -Xmx1G won't work and I wasn't able to find another reason. Not here neither on google)
Thank you!
Sorry for my bad english...
It's a difference in how the operating systems work. Linux has a concept of a 'fixed' swap - this is based on physical RAM + the various swapfiles/swap partitions added to the system. This is considered the maximum limit of memory that can be committed.
OSX doesn't consider swap as fixed. It will continue to add swapfiles as more and more memory is committed on the operating system (you can see the files being added in /var/vm).
As a result, you can ask OSX for significantly more memory than is available and it will effectively reply with 'ok', while under linux it will go 'no'.
The upper-bound limit is still enforced by java - once the heap goes above the size specified it will return a java.lang.OutOfMemoryError: Java heap space exception, so if you're specifying a -Xmx1G then it should be enforced by the JRE.
You can see the difference with a simple test program:
import java.util.Vector;
public class memtest {
public static void main(String args[]) throws Exception {
Vector<byte[]> v = new Vector<byte[]>();
while (true) {
v.add(new byte[128 * 1024]);
System.out.println(v.size());
}
}
};
If this program is run with -Xmx100M it dies with a Java heap space message after ~730 iterations, when run with -Xmx1G it dies with a Java heap space message after ~7300 iterations, showing that the limit is being enforced by the java virtual machine.
I have been trying to find the answer to this but I still could not.
I have a 64-bit machine with 256 GB RAM.
I am trying to execute a Java program which links to MySQL. And it needs a quiet big heap size because when I used VM argument -Xmx1024m after few minutes this pops up:
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
But, when I tried to set the program VM argument by -Xmx2048m or bigger, it does not work and said:
Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap
I read that setting -Xmx2048 is not a problem for 64-bit machine but I really do not know why it's not working on my machine.
java -version output:
wmic OS get FreePhysicalMemory /Value output:
FreePhysicalMemory=251663664
wmic computersystem get TotalPhysicalMemory output:
TotalPhysicalMemory
274811621376
wmic os get osarchitecture output
OSArchitecture
64-bit
I could not execute systeminfo|find "Memory" as it says wrong syntax. Im not sure why either.
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
This message implies the java heap does not have enough space to do further allocation.
It seems you have set to 1G of Xmx which is insufficient for your application
else the application might leak memory which occupies space in java heap.
Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap
During VM initialization. JVM does various init right from Heap to JIT modules.
Java heap are continiuos space while doing doing initialization if JVM could not find the
contigous memory space for the requested Xmx then above error message will be thrown.
These are virtual memory allocation so please do not confuse with physical memory values
Please run the command
java -verbose:init -Xmx2048 -version
this command will tell the steps undergoes by JVM while doing initialization and during what step it got failed.
Consider running your app as an administrator - just launch the PowerShell console via right click -> Run as Administrator.
Windows may deny granting a lot of memory to a single process that is running non-elevated.
Also - are you using Windows Server or a workstation version of Windows? It is generally recommended to use Windows Server for such "big" services.
Can you please suggest me solution for the below issues.
hduser#hduser-VirtualBox:/usr/local/spark1/project$ sbt package
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000a8000000, 1073741824, 0) failed; error='Cannot allocate memory' (errno=12)
#
There is insufficient memory for the Java Runtime Environment to continue.
Native memory allocation (malloc) failed to allocate 1073741824 bytes for committing reserved memory.
An error report file with more information is saved as:
/usr/local/spark-1.1.0-bin-hadoop1/project/hs_err_pid26824.log
hduser#hduser-VirtualBox:/usr/local/spark1/project$ java -version
java version "1.7.0_65"
OpenJDK Runtime Environment (IcedTea 2.5.3) (7u71-2.5.3-0ubuntu0.14.04.1)
OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
Looks like you're trying to run with quite a large Java heap size (1GB). I'd start by reducing that. If you really do need that much, you might be in trouble: it looks as though your machine just doesn't have enough RAM to allocate it for you.
I have a java file which is being triggered from a shell script. If I execute the shell script at command line it is executing the java file without any issues but if i execute this shell script from browser( i have a index.php which executes this shell script in linux server ) it is not executing the java file in shell script. The shell script is executed properly If I remove the java execution line from the shell script.
below is the error i received when executed from browser.
Error From browser:Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00007fcf589ac000, 2555904, 1) failed; error='Permission denied' (errno=13) # # There is insufficient memory for the Java Runtime Environment to continue. # Native memory allocation (malloc) failed to allocate 2555904 bytes for committing reserved memory. # An error report file with more information is saved as: # /tmp/hs_err_pid306.log
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 2555904 bytes for committing reserved memory.
# Possible reasons:
# The system is out of physical RAM or swap space
# In 32 bit mode, the process size limit was hit
# Possible solutions:
# Reduce memory load on the system
# Increase physical memory or swap space
# Check if swap backing store is full
# Use 64 bit Java on a 64 bit OS
# Decrease Java heap size (-Xmx/-Xms)
# Decrease number of Java threads
# Decrease Java thread stack sizes (-Xss)
# Set larger code cache with -XX:ReservedCodeCacheSize=
# This output file may be truncated or incomplete.
#
# Out of Memory Error (os_linux.cpp:2726), pid=306, tid=140528680765184
#
# JRE version: (7.0_51-b13) (build )
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode linux-amd64 compressed oops)
Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
Please help me on how I can fix this problem.. Stuck with this issue from last one week. :|
Permission problem.
Probably you run this java file as a different user from a browser.
An error report file with more information is saved as: # /tmp/hs_err_pid306.log
What does this error say?
Issue you have is with the HEAP memory.You don't have set enough memory to run the application.
Default size of Heap space in Java is 128MB on most of 32 bit Sun's JVM but its highly varies from JVM to JVM e.g. default maximum and start heap size for the 32-bit Solaris Operating System (SPARC Platform Edition) is -Xms=3670K and -Xmx=64M and Default values of heap size parameters on 64-bit systems have been increased up by approximately 30%. Also if you are using throughput garbage collector in Java 1.5 default maximum heap size of JVM would be Physical Memory/4 and default initial heap size would be Physical Memory/16. Another way to find default heap size of JVM is to start an application with default heap parameters and monitor in using JConsole which is available on JDK 1.5 onwards, on VMSummary tab you will be able to see maximum heap size.
By the way you can increase size of java heap space based on your application need and I always recommend this to avoid using default JVM heap values. if your application is large and lots of object created you can change size of heap space by using JVM options -Xms and -Xmx. Xms denotes starting size of Heap while -Xmx denotes maximum size of Heap in Java. There is another parameter called -Xmn which denotes Size of new generation of Java Heap Space. Only thing is you can not change the size of Heap in Java dynamically, you can only provide Java Heap Size parameter while starting JVM. I have shared some more useful JVM options related to Java Heap space and Garbage collection on my post 10 JVM options Java programmer must know, you may find useful.
Read more: http://javarevisited.blogspot.com/2011/05/java-heap-space-memory-size-jvm.html#ixzz30FsKCqeT
If it's tomcat you have to set this Memory Variables in "catalina.sh".
Eg : If you a starting the application through command Line :
/bin/java -Xms2048M -Xmx2048M Djava.util.logging.config.file= -Xms2048M -Xmx2048M