What should be the JVM heap size (Xms Xmx) for JDK8 64-bit on Linux having physical memory of 16 GB RAM and 8...
I have 16GB of RAM and 8 CPU's on my Linux server with JDK8 x64 installed.
I have set up JVM heap size as below but keep getting java.lang.OutOfMemoryError
JAVA_OPTS="-Xms2048m -Xmx4096m -XX:MaxPermSize=1024m -XX:-UseGCOverheadLimit
Any suggestions, what should be the minimum/maximum/PermGen heap size.
java jvm 64bit heap-memory permgen
asked Nov 16 '18 at 7:02
User_GUser_G
83
closed as too broad by talex, Owen Pauling, apangin, greg-449, hellow Nov 16 '18 at 11:04
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
|
show 3 more comments
I have 16GB of RAM and 8 CPU's on my Linux server with JDK8 x64 installed.
I have set up JVM heap size as below but keep getting java.lang.OutOfMemoryError
JAVA_OPTS="-Xms2048m -Xmx4096m -XX:MaxPermSize=1024m -XX:-UseGCOverheadLimit
Any suggestions, what should be the minimum/maximum/PermGen heap size.
java jvm 64bit heap-memory permgen
asked Nov 16 '18 at 7:02
User_GUser_G
83
closed as too broad by talex, Owen Pauling, apangin, greg-449, hellow Nov 16 '18 at 11:04
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
4
That absolutely depends on the application you are running. Can you please give us some more insights on that?
– TobiSH
Nov 16 '18 at 7:09
keep getting java.lang.OutOfMemoryError More than you have
– Scary Wombat
Nov 16 '18 at 7:11
2
BTW. If you are running a Java 8 application you can get rid of-XX:MaxPermSize=1024m. This is no longer supported by Java8 ( The memory model used for loaded classes and methods is different and isn't limited (with default settings))
– TobiSH
Nov 16 '18 at 7:11
If you don't have a clue what is going on try to generate a heap dump:-XX:+HeapDumpOnOutOfMemoryError. Than you can see what consumes all the memory.
– TobiSH
Nov 16 '18 at 7:14
1
@PeterLawrey we can preclude permgen issues for a Java 8 installation.
– Holger
Nov 16 '18 at 9:20
|
show 3 more comments
I have 16GB of RAM and 8 CPU's on my Linux server with JDK8 x64 installed.
I have set up JVM heap size as below but keep getting java.lang.OutOfMemoryError
JAVA_OPTS="-Xms2048m -Xmx4096m -XX:MaxPermSize=1024m -XX:-UseGCOverheadLimit
Any suggestions, what should be the minimum/maximum/PermGen heap size.
java jvm 64bit heap-memory permgen
asked Nov 16 '18 at 7:02
User_GUser_G
83
I have 16GB of RAM and 8 CPU's on my Linux server with JDK8 x64 installed.
I have set up JVM heap size as below but keep getting java.lang.OutOfMemoryError
JAVA_OPTS="-Xms2048m -Xmx4096m -XX:MaxPermSize=1024m -XX:-UseGCOverheadLimit
Any suggestions, what should be the minimum/maximum/PermGen heap size.
java jvm 64bit heap-memory permgen
java jvm 64bit heap-memory permgen
asked Nov 16 '18 at 7:02
User_GUser_G
83
asked Nov 16 '18 at 7:02
User_GUser_G
83
asked Nov 16 '18 at 7:02
User_GUser_G
83
asked Nov 16 '18 at 7:02
User_GUser_G
83
asked Nov 16 '18 at 7:02
User_GUser_G
83
83
closed as too broad by talex, Owen Pauling, apangin, greg-449, hellow Nov 16 '18 at 11:04
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
closed as too broad by talex, Owen Pauling, apangin, greg-449, hellow Nov 16 '18 at 11:04
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
4
That absolutely depends on the application you are running. Can you please give us some more insights on that?
– TobiSH
Nov 16 '18 at 7:09
keep getting java.lang.OutOfMemoryError More than you have
– Scary Wombat
Nov 16 '18 at 7:11
2
BTW. If you are running a Java 8 application you can get rid of-XX:MaxPermSize=1024m. This is no longer supported by Java8 ( The memory model used for loaded classes and methods is different and isn't limited (with default settings))
– TobiSH
Nov 16 '18 at 7:11
If you don't have a clue what is going on try to generate a heap dump:-XX:+HeapDumpOnOutOfMemoryError. Than you can see what consumes all the memory.
– TobiSH
Nov 16 '18 at 7:14
1
@PeterLawrey we can preclude permgen issues for a Java 8 installation.
– Holger
Nov 16 '18 at 9:20
|
show 3 more comments
4
That absolutely depends on the application you are running. Can you please give us some more insights on that?
– TobiSH
Nov 16 '18 at 7:09
keep getting java.lang.OutOfMemoryError More than you have
– Scary Wombat
Nov 16 '18 at 7:11
2
BTW. If you are running a Java 8 application you can get rid of-XX:MaxPermSize=1024m. This is no longer supported by Java8 ( The memory model used for loaded classes and methods is different and isn't limited (with default settings))
– TobiSH
Nov 16 '18 at 7:11
If you don't have a clue what is going on try to generate a heap dump:-XX:+HeapDumpOnOutOfMemoryError. Than you can see what consumes all the memory.
– TobiSH
Nov 16 '18 at 7:14
1
@PeterLawrey we can preclude permgen issues for a Java 8 installation.
– Holger
Nov 16 '18 at 9:20
4
4
That absolutely depends on the application you are running. Can you please give us some more insights on that?
– TobiSH
Nov 16 '18 at 7:09
That absolutely depends on the application you are running. Can you please give us some more insights on that?
– TobiSH
Nov 16 '18 at 7:09
keep getting java.lang.OutOfMemoryError More than you have
– Scary Wombat
Nov 16 '18 at 7:11
keep getting java.lang.OutOfMemoryError More than you have
– Scary Wombat
Nov 16 '18 at 7:11
2
2
BTW. If you are running a Java 8 application you can get rid of
-XX:MaxPermSize=1024m. This is no longer supported by Java8 ( The memory model used for loaded classes and methods is different and isn't limited (with default settings))– TobiSH
Nov 16 '18 at 7:11
BTW. If you are running a Java 8 application you can get rid of
-XX:MaxPermSize=1024m. This is no longer supported by Java8 ( The memory model used for loaded classes and methods is different and isn't limited (with default settings))– TobiSH
Nov 16 '18 at 7:11
If you don't have a clue what is going on try to generate a heap dump:
-XX:+HeapDumpOnOutOfMemoryError. Than you can see what consumes all the memory.– TobiSH
Nov 16 '18 at 7:14
If you don't have a clue what is going on try to generate a heap dump:
-XX:+HeapDumpOnOutOfMemoryError. Than you can see what consumes all the memory.– TobiSH
Nov 16 '18 at 7:14
1
1
@PeterLawrey we can preclude permgen issues for a Java 8 installation.
– Holger
Nov 16 '18 at 9:20
@PeterLawrey we can preclude permgen issues for a Java 8 installation.
– Holger
Nov 16 '18 at 9:20
|
show 3 more comments
1 Answer
1
active
oldest
votes
Out of memory error is caused, because the heap size consumed by your code is more than what is allocated by Java.
This could be because of multiple reasons.
1) Your code is bulky and needs more memory: A simple code to just print "Hello World" won't consume much memory. However, a lengthy and bulky application of 1 GB source code would consume huge memory. If that is case, you can try to increase your memory arguments.
2) Bad Code: Bad code, which consumes useless memory, and does not release it later, causes more heap size to be used continously than the garbage collected. If that is the code you might need to identify the issue with your code. You can actually identify the method or class that is consuming this huge amount of heap, using Java Flight Record (JFR).
Ideal Heap Memory Size varies from from case to case and your requirements must be known for exact heap size.
edited Nov 16 '18 at 7:30
Basil Bourque
116k30395559
answered Nov 16 '18 at 7:14
Gautam JainGautam Jain
334
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Out of memory error is caused, because the heap size consumed by your code is more than what is allocated by Java.
This could be because of multiple reasons.
1) Your code is bulky and needs more memory: A simple code to just print "Hello World" won't consume much memory. However, a lengthy and bulky application of 1 GB source code would consume huge memory. If that is case, you can try to increase your memory arguments.
2) Bad Code: Bad code, which consumes useless memory, and does not release it later, causes more heap size to be used continously than the garbage collected. If that is the code you might need to identify the issue with your code. You can actually identify the method or class that is consuming this huge amount of heap, using Java Flight Record (JFR).
Ideal Heap Memory Size varies from from case to case and your requirements must be known for exact heap size.
edited Nov 16 '18 at 7:30
Basil Bourque
116k30395559
answered Nov 16 '18 at 7:14
Gautam JainGautam Jain
334
add a comment |
Out of memory error is caused, because the heap size consumed by your code is more than what is allocated by Java.
This could be because of multiple reasons.
1) Your code is bulky and needs more memory: A simple code to just print "Hello World" won't consume much memory. However, a lengthy and bulky application of 1 GB source code would consume huge memory. If that is case, you can try to increase your memory arguments.
2) Bad Code: Bad code, which consumes useless memory, and does not release it later, causes more heap size to be used continously than the garbage collected. If that is the code you might need to identify the issue with your code. You can actually identify the method or class that is consuming this huge amount of heap, using Java Flight Record (JFR).
Ideal Heap Memory Size varies from from case to case and your requirements must be known for exact heap size.
edited Nov 16 '18 at 7:30
Basil Bourque
116k30395559
answered Nov 16 '18 at 7:14
Gautam JainGautam Jain
334
add a comment |
Out of memory error is caused, because the heap size consumed by your code is more than what is allocated by Java.
This could be because of multiple reasons.
1) Your code is bulky and needs more memory: A simple code to just print "Hello World" won't consume much memory. However, a lengthy and bulky application of 1 GB source code would consume huge memory. If that is case, you can try to increase your memory arguments.
2) Bad Code: Bad code, which consumes useless memory, and does not release it later, causes more heap size to be used continously than the garbage collected. If that is the code you might need to identify the issue with your code. You can actually identify the method or class that is consuming this huge amount of heap, using Java Flight Record (JFR).
Ideal Heap Memory Size varies from from case to case and your requirements must be known for exact heap size.
edited Nov 16 '18 at 7:30
Basil Bourque
116k30395559
answered Nov 16 '18 at 7:14
Gautam JainGautam Jain
334
Out of memory error is caused, because the heap size consumed by your code is more than what is allocated by Java.
This could be because of multiple reasons.
1) Your code is bulky and needs more memory: A simple code to just print "Hello World" won't consume much memory. However, a lengthy and bulky application of 1 GB source code would consume huge memory. If that is case, you can try to increase your memory arguments.
2) Bad Code: Bad code, which consumes useless memory, and does not release it later, causes more heap size to be used continously than the garbage collected. If that is the code you might need to identify the issue with your code. You can actually identify the method or class that is consuming this huge amount of heap, using Java Flight Record (JFR).
Ideal Heap Memory Size varies from from case to case and your requirements must be known for exact heap size.
edited Nov 16 '18 at 7:30
Basil Bourque
116k30395559
answered Nov 16 '18 at 7:14
Gautam JainGautam Jain
334
edited Nov 16 '18 at 7:30
Basil Bourque
116k30395559
edited Nov 16 '18 at 7:30
Basil Bourque
116k30395559
edited Nov 16 '18 at 7:30
Basil Bourque
116k30395559
116k30395559
answered Nov 16 '18 at 7:14
Gautam JainGautam Jain
334
answered Nov 16 '18 at 7:14
Gautam JainGautam Jain
334
answered Nov 16 '18 at 7:14
Gautam JainGautam Jain
334
334
add a comment |
add a comment |
4
That absolutely depends on the application you are running. Can you please give us some more insights on that?
– TobiSH
Nov 16 '18 at 7:09
keep getting java.lang.OutOfMemoryError More than you have
– Scary Wombat
Nov 16 '18 at 7:11
2
BTW. If you are running a Java 8 application you can get rid of
-XX:MaxPermSize=1024m. This is no longer supported by Java8 ( The memory model used for loaded classes and methods is different and isn't limited (with default settings))– TobiSH
Nov 16 '18 at 7:11
If you don't have a clue what is going on try to generate a heap dump:
-XX:+HeapDumpOnOutOfMemoryError. Than you can see what consumes all the memory.– TobiSH
Nov 16 '18 at 7:14
1
@PeterLawrey we can preclude permgen issues for a Java 8 installation.
– Holger
Nov 16 '18 at 9:20