java8默认垃圾回收器,Java 8的默认垃圾收集器

最新推荐文章于 2025-07-26 01:00:24 发布

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#java8默认垃圾回收器

Java 8 的默认垃圾收集器对于服务器类机器是并行收集器（也称为吞吐量收集器），而对于客户端类机器则是串行收集器。由于大多数现代机器都拥有两个或更多CPU，因此通常被视为服务器类，故并行收集器被广泛认为是默认选择。

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What is the default garbage collector for Java 8?

When I check the JMX Beans, they reveal it to be the parallel collector for the new generation and the old serial collector for the old generation.

解决方案

Selecting the default garbage collector (among other things) is what's called the ergonomics process of the JVM. This process depends on the class of your machine.

For server-class machine, defined as a machine with 2 or more physical processors and 2 or more GB of physical memory (regardless of the platform), the default garbage collector is the parallel collector (also known as throughput collector).

For client-class machine, defined as a 32-bit platform on Windows or a single-processor machine, the default garbage collector is the serial collector.

Since practically all machines have 2 or more CPU, a machine is practically always considered server-class by the JVM. That's why you will find a lot of references considering the parallel collector to be the default garbage collector.