permgen

Forking tests fail because javaOptions seems to be misconfigured

由 ￡可爱￡侵袭症＋ 提交于 2020-02-07 03:45:31
问题 Using Play 2.X, I expect my tests to be forked by default (new way from Play 2.X) and especially well run. However, when using this SBT configuration in my Build.scala , I observe an OOM due to permgen space, like the following: Uncaught exception when running myspecs.AllSpecs: java.lang.OutOfMemoryError: PermGen space sbt.ForkMain$ForkError: PermGen space at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:791) at java.security

Method Area and PermGen

由 旧街凉风 提交于 2020-01-19 23:07:07
问题 I was trying to understand the memory structure of HotSpot JVM and got confused with the two terms "Method Area" and "PermGen" space. The docs I referred to say that Method Area contains the definition of classes and methods including the byte code. Some other docs say that they are stored in the PermGen space. So can I conclude that these two memory areas are same ? 回答1: You should take a look at Java Memory Types and optionally at this doc about the Garbage Collection in Java. The latter is

springmvc hibernate jvm permGen Space

由 一个人想着一个人 提交于 2020-01-07 18:08:04
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 最近项目突然出现了“java.lang.OutOfMemoryError: PermGen space”的错误，其实关于 PermGen space 错误的解释，网上已经有很多了，摘录一段 PermGen space的全称是Permanent Generation space,是指内存的永久保存区域, 这块内存主要是被JVM存放Class和Meta信息的,Class在被Loader时就会被放到PermGen space中,它和存放类实例(Instance)的Heap区域不同,GC(Garbage Collection)不会在主程序运行期对 PermGen space进行清理，所以如果你的应用中有很多CLASS的话,就很可能出现PermGen space错误,这种错误常见在web服务器对JSP进行pre compile的时候。如果你的WEB APP下都用了大 量的第三方jar, 其大小超过了jvm默认的大小那么就会产生此错误信息了。 java其实并不推荐大量使用反射来构造对象 很多人都把这个错误的原因，很大程度上都归结于使用了spring hibernate……，因为他们动态产生类（java反射），导致溢出（spring在AOP的时候使用CBLIB会产生很多类，hibernate反射也会产生很多类 ） 原因是：

sonarRunner java.lang.OutOfMemoryError: PermGen space

由 Deadly 提交于 2020-01-06 01:00:06
问题 Environment: 1. Linux 2. Gradle 1.6/7 3. Language - Java gradle clean build jacocoTestReport - working fine. Recently followed the documentation provided by SonarQube installation at: http://docs.sonarqube.org/display/SONAR/Running+SonarQube+as+a+Service+on+Linux (sonar start, sonar status, sonar stop etc)...commands will work at this point. Changed gradle build script acc. to Gradle SonarRunner help page at: http://www.gradle.org/docs/current/userguide/sonar_runner_plugin.html While running

Why does my Sun JVM fail to initialize when I set PermGen above 128M?

由 依然范特西╮ 提交于 2020-01-05 03:27:10
问题 I need to increase my PermGen. Currently I pass the following as command line parameters: -XX:PermSize=128m -XX:MaxPermSize=128m This works. If I try to increase the values, however, my JVM fails to initialize, giving me this error: [2009-06-18 01:39:44] [info] Error occurred during initialization of VM [2009-06-18 01:39:44] [info] Could not reserve enough space for object heap [2009-06-18 01:39:44] [info] [2009-06-18 01:39:44] [395 javajni.c] [error] CreateJavaVM Failed Specifically, I'm

permgen, but Java VisualVM says “No GC root found”

由 老子叫甜甜 提交于 2020-01-01 05:04:11
问题 I have a very simple 'Hello world' type web application (Spring 3.2.1, Hibernate 4.1.9) on stopping/restarting the web-app Tomcat 7.0.26 The following web applications were stopped (reloaded, undeployed), but their classes from previous runs are still loaded in memory, thus causing a memory leak (use a profiler to confirm): /myapp I took the following steps: Started JVisualVM Right click on Tomcat and selected 'Heap Dump' Clicked on 'OQL Console' on the [heapdump] Ran this query: select x

Jetty 7: OutOfMemoryError: PermGen space on application redeploy

由 不问归期 提交于 2020-01-01 03:24:08
问题 First time app starts correctly. Then I delete webapp/*.war file and paste new version of *.war. Jetty start deploying new war but error java.lang.OutOfMemoryError: PermGen space occurs. How can I configure Jetty to fix error / make correct redeploy? This solution doesn't help me. Jetty version: jetty-7.4.3.v20110701 回答1: There is probably no way to configure the problem away. Each JVM has one PermGen memory area that is used for class loading and static data. Whenever your application gets

Why is the default size of PermGen so small?

由 爱⌒轻易说出口 提交于 2019-12-31 10:49:33
问题 What would be the purpose of limiting the size of the Permgen space on a Java JVM? Why not always set it equal to the max heap size? Why does Java default to such a small number of 64MB? Are they trying to force people to notice permgen issues in their code by doing this? If my app uses 85MB of permgen, then it might be safe to set it to 96MB but why set it so small if its just really part of the main heap? Wouldn't it be efficient to allow the JVM to use as much PermGen as the heap allows?

Tomcat on production server, PermGen and redeploys

由 烂漫一生 提交于 2019-12-31 09:13:20
问题 It looks like MemoryError: PermGen space java.lang.OutOfMemoryError: PermGen space is a common problem. You can Increase the size of your perm space, but after 100 or 200 redeploys it will be full. Tracking ClassLoader memory leaks is nearly impossible. What are your methods for Tomcat (or another simple servlet container - Jetty?) on production server? Is server restart after each deploy a solution? Do you use one Tomcat for many applications ? Maybe I should use many Jetty servers on

How to analyze PermGen contents?

由 隐身守侯 提交于 2019-12-27 17:00:33
问题 I want to get a dump of the PermGen to see why it is filling. Is there a way to analyze this? I already know about the common suspects like log4j, tomcat webapp reloading etc, but I have some custom proxy generation code in my application, too, and just want to look under the hood. Is this possible somehow? 回答1: The PermGen normally consists of the string literal pool and loaded classes. To answer part of your problem, i.e. the string literal pool I wrote a utility to print a running JVM's
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