记一次CMS unloading class 耗时长调查 CMS: abort preclean due to time2020-09-14T15:02:15.293+0800:262550.667: [CMS-concurrent-abortable-preclean:4.087/5.007secs] [Times: user=5.12sys=0.00, real=5.01secs] 2020-09-14T15:02:15.311+0800:262550.685: [GC (CMS Final Remark) [YG occupancy:20470...
1[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor339] 2[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor336] 3[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor341] 4[Unloading class sun.reflect.GeneratedSerializationConstructorAccessor342] 5[Unloading class ...
My question is: What would be the easiest way to load each new version of a class received via RMI parameters. Ideally I'm looking for a way to have each remote call get a new ClassLoader and to dispose of it upon return. Is this feasible to do without an intricate knowledge of cust...
If the remembered set indicates that the class set includes instances outside of the subset of regions, the technique identifies the class set as "live." This will preclude unloading the class set from the subset of regions.Peter Wiebe Burka...
网络类卸载 网络释义 1. 类卸载 ...ct Finalization)、软/弱/虚引用、类卸载(class-unloading)、Java本地接口(JNI)和反射API。 blog.csdn.net|基于7个网页
Consequently, whether a class or interface has been unloaded or not should be transparent to a program. However, if a class or interface C was unloaded ... Get The Java® Language Specification, Java SE 7 Edition, Fourth Edition now with the O’Reilly learning platform. O’Reilly members...
"Renaming class A to class B" in the runtime means changing its internal state such that it looks as if all the files that have been loaded and referred to class A had been changed to refer to class B. This sounds complicated, but in most runtimes ...
JVM标志CMSClassUnloadingEnabled实际上做了Java类的卸载工作。在Java虚拟机(JVM)中,类加载器(ClassLoader)负责加载类文件,而类卸载(Class Unloading)是指在类加载器不再需要某个类时,将其从内存中释放。这个过程主要是为了节省内存空间,并且在类被重新加载时重新加载新版本的类。 CMSClassUnloadingEnabled标志是一...
近期在项目上遇到了多个系统性能问题,都涉及到JVM调优,这里做个记录。 A项目:GC class unloading时间很长 问题现象 非功能测试环境出现了压测的机器GC日志里有: [GC remark 2021-11-19T14:36:18.810...[Unloading, 8.2604164 secs]...] // 最长的出现了33s多 网上查到跟这个很类似:记一次CMS unloading class...
kafka启动报错-XX:+CMSClassUnloadingEnabled -XX:+CMSScavengeBeforeRemark -XX:+DisableExplicitGC -,程序员大本营,技术文章内容聚合第一站。