jvm

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Scope of System.setProperty in Tomcat

This question is "cousin" of this one involv开发者_高级运维ing Android. But here we are in Tomcat environment.[详细]

2023-04-09 23:56 分类：问答
Memory managment and JVM setting for solr

I have a large Data storage(About 500GB pdf and video files) and my machine have a 4GB of RAM capacity, i want to index these file with solrj API\'s , what is the necessary settingfor solrconfig and J[详细]

2023-04-09 22:06 分类：问答
Method to dump classes on the classpath from inside JVM?

My code is failing with a ClassNotFoundException. I can see that the jar file containing the class is definitely on the classpath from the command prompt execution.[详细]

2023-04-09 19:18 分类：问答
Java Garbage Collection Defragmentation

I am getting a OutOfMemoryError java heap exception when just allocating and deallocating a byte array, even though there is enough free memory for the allocation.[详细]

2023-04-09 11:15 分类：问答
When embedding CPython in Java, why does this hang?

I\'m embedding CPython into a JVM using Jepp, but when I run import numpy; numpy.finfo(float) the process hangs.gdb says something\'s blocking a semaphore/lock acquisition, and the stack trace sugg[详细]

2023-04-09 09:14 分类：问答
How to check the configured Xmx value for a running java application

I\'m creating an NSIS script, where the Xmx value for the java application being installed can be set during the installation process. I\'m not sure if this parameter is being set correc开发者_高级运维[详细]

2023-04-09 08:37 分类：问答
Concurrency accessing a shared resource

I am writing a Java application, that access to a configuration file stored as a shared resource in a Windows server. The app is thought to be used by around 500 employees, so it made me think about c[详细]

2023-04-08 18:19 分类：问答
Hadoop java mapper -copyFromLocal heap size error

As part of my Java mapper I have a command executes some code on the local node and copies a local output file to the hadoop fs.Unfortunately I\'m getting the following output:[详细]

2023-04-08 14:56 分类：问答
How can I determine the JVM minimum heap size from within a java application?

I have reviewed the answer to how to get the min and max heap size settings of a JVM from within a Java program which was helpful, but the accepted answer doesn\'t appear to answer half of the questio[详细]

2023-04-08 00:02 分类：问答
How to set JVM parameters for Junit Unit Tests?

I have some Junit unit tests that require a large amount of heap-space to run - i.e. 1G. (They test memory-intensive functionality for a webstart app that will only run with sufficient heap-space, and[详细]

2023-04-07 23:52 分类：问答