Java 内存模型 Java 程序内存运行分析 Java 内存管理建议 JVM 内存溢出和参数调优  当遇到 OutOfMemoryError 时该如何做？ ▶ 常见的 OOM（Out Of Memory）内存溢出异常，就是堆内 存空间不足以存放新对象实例时导致。 ▶ 永久区内存溢出相对少见，一般是由于需要加载海量的 Class 数据，超过了非堆内存的容量导致。 ▶ 栈内存也会溢出，但是更加少见。 Java 内存模型 Java 程序内存运行分析 Java 内存管理建议 JVM 内存溢出和参数调优  当遇到 OutOfMemoryError 时该如何做？ ▶ 常见的 OOM（Out Of Memory）内存溢出异常，就是堆内 存空间不足以存放新对象实例时导致。 ▶ 永久区内存溢出相对少见，一般是由于需要加载海量的 Class 数据，超过了非堆内存的容量导致。 ▶ 栈内存也会溢出，但是更加少见。 Java 内存模型 Java 程序内存运行分析 Java 内存管理建议 JVM 内存溢出和参数调优  当遇到 OutOfMemoryError 时该如何做？ ▶ 常见的 OOM（Out Of Memory）内存溢出异常，就是堆内 存空间不足以存放新对象实例时导致。 ▶ 永久区内存溢出相对少见，一般是由于需要加载海量的 Class 数据，超过了非堆内存的容量导致。 ▶ 栈内存也会溢出，但是更加少见。

即可实现对该进程的资源控制。groups可以限制blkio、cpu、cpuacct、cpuset、devices、 freezer、memory、net_cls、ns九项子系统的资源。 blkio 这个子系统设置限制每个块设备的输入输出控制。例如磁盘、光驱以及usb等。 cpu 这个子系统使用调度程序为cgroup任务提供cpu的访问。 cpuacct 产生cgroup任务的cpu资源报告。 cpuset cpuset 如果是多核心的cpu，这个子系统会为cgroup任务分配单独的cpu和内存。 devices 允许或拒绝cgroup任务对设备的访问。 freezer 暂停和恢复cgroup任务。 memory 设置每个cgroup的内存限制以及产生内存资源报告。 net_cls 标记每个网络包以供cgroup方便使用。 ns 名称空间子系统。 Refer to: https://www.kernel clone_children flag: enabled Cgroup device: enabled Cgroup sched: enabled Cgroup cpu account: enabled Cgroup memory controller: enabled Cgroup cpuset: enabled --- Misc --- Veth pair device: enabled Macvlan: enabled

1.3 in late 2006. If you haven't done so already, upgrade to JDK 1.4.2 or higher. If you need to stick with an application server that only supports JDK 1.3, such as WebSphere 4.0 or 5.0, we recommend been removed. If you haven't done so already, upgrade to Hibernate 3.1 or higher. If you need to stick with Hibernate 2.1 or 3.0 for the time being, we recommend to keep using the Spring Framework version JDO 2.0 or What's new in Spring 2.0 and 2.5? Spring Framework (2.5.6) 29 higher. If you need to stick with JDO 1.0 for the time being, we recommend to keep using the Spring Framework version 2.0.7/2.0

1.3 in late 2006. If you haven't done so already, upgrade to JDK 1.4.2 or higher. If you need to stick with an application server that only supports JDK 1.3, such as WebSphere 4.0 or 5.0, we recommend been removed. If you haven't done so already, upgrade to Hibernate 3.1 or higher. If you need to stick with Hibernate 2.1 or 3.0 for the time being, we recommend to keep using the Spring Framework version 0 has been removed. If you haven't done so already, upgrade to JDO 2.0 or higher. If you need to stick with JDO 1.0 for the time being, we recommend to keep using the Spring Framework What's new in Spring

generally desirable. The main usage scenario when you might prefer to use the BeanFactory is when memory usage is the greatest concern (such as in an applet where every last kilobyte counts), and you don't ApplicationContext by default pre-instantiates singleton beans. At the cost of some upfront time and memory to create these beans before they are actually needed, you find out about configuration issues when used over the BeanFactory, except for a few limited situations such as perhaps in an Applet, where memory consumption might be critical, and a few extra kilobytes might make a difference. The following sections

generally desirable. The main usage scenario when you might prefer to use the BeanFactory is when memory usage is the greatest concern (such as in an applet where every last kilobyte counts), and you don't ApplicationContext by default pre-instantiates singleton beans. At the cost of some upfront time and memory to create these beans before they are actually needed, you find out about configuration issues when used over the BeanFactory, except for a few limited situations such as perhaps in an Applet, where memory consumption might be critical, and a few extra kilobytes might make a difference. The following sections

generally desirable. The main usage scenario when you might prefer to use the BeanFactory is when memory usage is the greatest concern (such as in an applet where every last kilobyte counts), and you don't ApplicationContext by default pre-instantiates singleton beans. At the cost of some upfront time and memory to create these beans before they are actually needed, you find out about configuration issues when used over the BeanFactory, except for a few limited situations such as perhaps in an Applet, where memory consumption might be critical, and a few extra kilobytes might make a difference. The following sections

generally desirable. The main usage scenario when you might prefer to use the BeanFactory is when memory usage is the greatest concern (such as in an applet where every last kilobyte counts), and you don't ApplicationContext by default pre-instantiates singleton beans. At the cost of some upfront time and memory to create these beans before they are actually needed, you find out about configuration issues when used over the BeanFactory, except for a few limited situations such as perhaps in an Applet, where memory consumption might be critical, and a few extra kilobytes might make a difference. The following sections

generally desirable. The main usage scenario when you might prefer to use the BeanFactory is when memory usage is the greatest concern (such as in an applet where every last kilobyte counts), and you don't ApplicationContext by default pre-instantiates singleton beans. At the cost of some upfront time and memory to create these beans before they are actually needed, you find out about configuration issues when used over the BeanFactory, except for a few limited situations such as perhaps in an Applet, where memory consumption might be critical, and a few extra kilobytes might make a difference. The following sections