Java11 引入的 Z 垃圾收集器的稳定性如何?
How stable is Z Garbage Collector introduced with Java11?
我正在使用 Java 11
,新的 Z 垃圾收集器 (ZGC) 看起来很有前途。
文档说它使用了一些低延迟垃圾收集机制,这样 GC
暂停时间永远不会超过 10 ms
,非常好地处理大堆并允许 return 未使用的堆内存到 OS,旧 GC 不存在
我担心的是 - ZGC 的稳定性如何?如果在产品中继续使用它是否存在风险?
谢谢!
ZGC 仍是一项实验性功能。使其成为产品功能是 planned for JDK 15.
根据JEP 377页面(2020/05/25更新):
Since its introduction in JDK 11 we’ve received positive feedback,
we’ve ironed out many bugs, and we’ve added a number of features and
enhancements. To highlight some of the more important ones:
- Concurrent class unloading
- Uncommitting unused memory (JEP 351)
- Maximum heap size increased from 4TB to 16TB
- Minimum heap size decreased to 8MB
- -XX:SoftMaxHeapSize
- Support for the JFR leak profiler
- Support for class-data sharing
- Limited and discontiguous address spaces
- Support for placing the heap on NVRAM
- Improved NUMA awareness
- Multi-threaded heap pre-touching
Furthermore, all commonly used platforms are now supported:
- Linux/x86_64 (JEP 333)
- Linux/aarch64 (8214527)
- Windows (JEP 365)
- macOS (JEP 364)
Testing of ZGC suggests that it is stable and, as of this writing, we have received no new ZGC-specific bugs for a few months. With the stability, feature set, and platform support that ZGC has today, it is
time to remove its experimental status and make it a product feature.
一些注意事项:
- 这来自从事 ZGC 项目的团队。有可能它们并不完全 objective。 (那只是人性...)。
- 这取决于有多少人(团队和用户)正在测试/尝试新的 GC。
- 这取决于他们正在测试/尝试的内容,以及这是否适合您的计划。
- 对于像新的 Java GC 这样复杂的东西,它 可能 需要 年 才能在可重现的环境中出现一些错误形式。
因此,虽然很有希望,但这并不能算作 可量化的 稳定性衡量标准,也不能给出可量化的风险衡量标准。
我正在使用 Java 11
,新的 Z 垃圾收集器 (ZGC) 看起来很有前途。
文档说它使用了一些低延迟垃圾收集机制,这样 GC
暂停时间永远不会超过 10 ms
,非常好地处理大堆并允许 return 未使用的堆内存到 OS,旧 GC 不存在
我担心的是 - ZGC 的稳定性如何?如果在产品中继续使用它是否存在风险?
谢谢!
ZGC 仍是一项实验性功能。使其成为产品功能是 planned for JDK 15.
根据JEP 377页面(2020/05/25更新):
Since its introduction in JDK 11 we’ve received positive feedback, we’ve ironed out many bugs, and we’ve added a number of features and enhancements. To highlight some of the more important ones:
- Concurrent class unloading
- Uncommitting unused memory (JEP 351)
- Maximum heap size increased from 4TB to 16TB
- Minimum heap size decreased to 8MB
- -XX:SoftMaxHeapSize
- Support for the JFR leak profiler
- Support for class-data sharing
- Limited and discontiguous address spaces
- Support for placing the heap on NVRAM
- Improved NUMA awareness
- Multi-threaded heap pre-touching
Furthermore, all commonly used platforms are now supported:
- Linux/x86_64 (JEP 333)
- Linux/aarch64 (8214527)
- Windows (JEP 365)
- macOS (JEP 364)
Testing of ZGC suggests that it is stable and, as of this writing, we have received no new ZGC-specific bugs for a few months. With the stability, feature set, and platform support that ZGC has today, it is time to remove its experimental status and make it a product feature.
一些注意事项:
- 这来自从事 ZGC 项目的团队。有可能它们并不完全 objective。 (那只是人性...)。
- 这取决于有多少人(团队和用户)正在测试/尝试新的 GC。
- 这取决于他们正在测试/尝试的内容,以及这是否适合您的计划。
- 对于像新的 Java GC 这样复杂的东西,它 可能 需要 年 才能在可重现的环境中出现一些错误形式。
因此,虽然很有希望,但这并不能算作 可量化的 稳定性衡量标准,也不能给出可量化的风险衡量标准。