公开(公告)号：US09448928B2

公开(公告)日：2016-09-20

申请号：US14145720

申请日：2013-12-31

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Rafiul Ahad ,  Adriano Santos

IPC: G06F12/02 ,  G06F9/455

CPC classification number: G06F12/0253 ,  G06F9/45558 ,  G06F12/0276 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/1044

Abstract: In accordance with an embodiment, described herein is a system and method for two-tier adaptive heap management (AHM) in a virtual machine environment, such as a Java virtual machine (JVM). In accordance with an embodiment, a two-tier AHM approach recognizes that more virtual machines can be run on a particular host, or the same number of virtual machines can support higher load while minimizing out-of-memory occurrences, swapping, and long old garbage collection pauses, if the heap is divided into tiers, so that a garbage collection policy that minimizes pause time can be used in a first (normal) tier, and a garbage collection policy that favors heap compaction and release of free memory to the host can be used in another (high-heap) tier.

Abstract translation: 根据本文所描述的实施例，在诸如Java虚拟机（JVM）的虚拟机环境中的用于两层自适应堆管理（AHM）的系统和方法。 根据实施例，两层AHM方法认识到可以在特定主机上运行更多的虚拟机，或者相同数量的虚拟机可以支持更高的负载，同时最小化内存不足的情况，交换和长老 垃圾收集暂停，如果堆分为层，以便可以在第一（正常）层中使用最小化暂停时间的垃圾收集策略，以及有利于堆压缩和释放可用内存到主机的垃圾收集策略 可以在另一个（高堆）层中使用。

公开(公告)号：US20140324924A1

公开(公告)日：2014-10-30

申请号：US14145720

申请日：2013-12-31

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Rafiul Ahad ,  Adriano Santos

IPC: G06F12/02 ,  G06F9/455

CPC classification number: G06F12/0253 ,  G06F9/45558 ,  G06F12/0276 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/1044

Abstract: In accordance with an embodiment, described herein is a system and method for two-tier adaptive heap management (AHM) in a virtual machine environment, such as a Java virtual machine (JVM). In accordance with an embodiment, a two-tier AHM approach recognizes that more virtual machines can be run on a particular host, or the same number of virtual machines can support higher load while minimizing out-of-memory occurrences, swapping, and long old garbage collection pauses, if the heap is divided into tiers, so that a garbage collection policy that minimizes pause time can be used in a first (normal) tier, and a garbage collection policy that favors heap compaction and release of free memory to the host can be used in another (high-heap) tier.

Abstract translation: 根据本文所描述的实施例，在诸如Java虚拟机（JVM）的虚拟机环境中的用于两层自适应堆管理（AHM）的系统和方法。 根据实施例，两层AHM方法认识到可以在特定主机上运行更多的虚拟机，或者相同数量的虚拟机可以支持更高的负载，同时最小化内存不足的情况，交换和长老 垃圾收集暂停，如果堆分为层，以便可以在第一（正常）层中使用最小化暂停时间的垃圾收集策略，以及有利于堆压缩和释放可用内存到主机的垃圾收集策略 可以在另一个（高堆）层中使用。