Java.Io.Ioexception: Map Failed In Addition To Java.Lang.Outofmemoryerror: Map Failed
Tuesday, July 3, 2018
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While working amongst memory mapped file, you lot may instruct java.io.IOException: Map failed error, which is mainly caused past times Caused by: java.lang.OutOfMemoryError: Map failed mistake every bit shown below. This mistake ordinarily comes spell mapping a large file inwards retentivity e.g. trying to map a file greater than 1 or 2GB
java.io.IOException: Map failed
at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:888)
Caused by: java.lang.OutOfMemoryError: Map failed
at sun.nio.ch.FileChannelImpl.map0(Native Method)
at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:885)
... half dozen more
-d64
This JVM flag instruct virtual machine to run on 64-bit mode. Since 64-bit installation on Solaris in addition to may live on on other UNIX systems comes amongst 32-bit JVM every bit well, which may live on efficient for pocket-size programs, due to pocket-size size of OOPS pointer every bit discusses on why role -XX:UseCompressedOOPS flag inwards 64-bit JVM. By providing this choice to your JVM you lot brand certain that it's running on 64-bit mode, allowing it to map to a greater extent than memory.
-XX:MaxDirectMemorySize
This choice is non on official listing of JVM flags exactly however a skilful choice to try. It allows you lot configure retentivity used past times straight buffers.
One to a greater extent than option, you lot tin endeavour is -XX:+UseLargePages.
For example, if your plan is using 6GB of retentivity mapped file, you lot may desire to pass
java -d64 -XX:MaxDirectMemorySize=6g -XX:+UseLargePages BigApp
That's all on how to solve java.io.IOException: Map failed in addition to java.lang.OutOfMemoryError: Map failed. You tin role whatsoever of these options or combination of them to come across what industrial plant for you. Make certain you lot role 64-bit JVM if you lot are mapping large files inwards memory. Remember though both mistake are different, 1 is IOException in addition to other is OutOfMemoryError, crusade is around same, departure is IOException comes spell using that file in addition to OutOfMemoryError comes spell mapping that file inwards memory.
Further Learning
Java Memory Management
Understanding the Java Virtual Machine: Memory Management
Understanding in addition to Solving Java Memory Problems
Sumber https://javarevisited.blogspot.com/
java.io.IOException: Map failed
at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:888)
Caused by: java.lang.OutOfMemoryError: Map failed
at sun.nio.ch.FileChannelImpl.map0(Native Method)
at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:885)
... half dozen more
How to Solve java.io.IOException: Map failed
JVM option to enable large straight buffers :-d64
This JVM flag instruct virtual machine to run on 64-bit mode. Since 64-bit installation on Solaris in addition to may live on on other UNIX systems comes amongst 32-bit JVM every bit well, which may live on efficient for pocket-size programs, due to pocket-size size of OOPS pointer every bit discusses on why role -XX:UseCompressedOOPS flag inwards 64-bit JVM. By providing this choice to your JVM you lot brand certain that it's running on 64-bit mode, allowing it to map to a greater extent than memory.
-XX:MaxDirectMemorySize
This choice is non on official listing of JVM flags exactly however a skilful choice to try. It allows you lot configure retentivity used past times straight buffers.
One to a greater extent than option, you lot tin endeavour is -XX:+UseLargePages.
For example, if your plan is using 6GB of retentivity mapped file, you lot may desire to pass
java -d64 -XX:MaxDirectMemorySize=6g -XX:+UseLargePages BigApp
That's all on how to solve java.io.IOException: Map failed in addition to java.lang.OutOfMemoryError: Map failed. You tin role whatsoever of these options or combination of them to come across what industrial plant for you. Make certain you lot role 64-bit JVM if you lot are mapping large files inwards memory. Remember though both mistake are different, 1 is IOException in addition to other is OutOfMemoryError, crusade is around same, departure is IOException comes spell using that file in addition to OutOfMemoryError comes spell mapping that file inwards memory.
Further Learning
Java Memory Management
Understanding the Java Virtual Machine: Memory Management
Understanding in addition to Solving Java Memory Problems
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