公开(公告)号：US20220229686A1

公开(公告)日：2022-07-21

申请号：US17154776

申请日：2021-01-21

Applicant: VMware, Inc.

Inventor： Pranshu JAIN ,  Maarten WIGGERS ,  Rajesh VENKATASUBRAMANIAN ,  Sahan Bamunavita GAMAGE

IPC: G06F9/455 ,  G06F9/48

Abstract: An example method of scheduling a workload in a virtualized computing system including a host cluster having a virtualization layer directly executing on hardware platforms of hosts is described. The virtualization layer supports execution of virtual machines (VMs) and is integrated with an orchestration control plane. The method includes: receiving, at the orchestration control plane, a workload specification for the workload; selecting, at the orchestration control plane, a plurality of nodes for the workload based on the workload specification, each of the plurality of nodes implemented by a host of the hosts; selecting, by the orchestration control plane in cooperation with a virtualization management server managing the host cluster, a node of the plurality of nodes; and deploying, by the orchestration control plane in cooperation with the virtualization management server, the workload on a host in the host cluster implementing the selected node.

公开(公告)号：US20160170906A1

公开(公告)日：2016-06-16

申请号：US15051940

申请日：2016-02-24

Applicant: VMware, Inc.

Inventor： Yury BASKAKOV ,  Alexander Thomas GARTHWAITE ,  Rajesh VENKATASUBRAMANIAN ,  Irene ZHANG ,  Seongbeom KIM ,  Nikhil BHATIA ,  Kiran TATI

IPC: G06F12/12 ,  G06F9/455 ,  G06F12/02

CPC classification number: G06F12/121 ,  G06F9/45558 ,  G06F12/023 ,  G06F12/1009 ,  G06F12/1027 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/1044

Abstract: Memory performance in a computer system that implements large page mapping is improved even when memory is scarce by identifying page sharing opportunities within the large pages at the granularity of small pages and breaking up the large pages so that small pages within the large page can be freed up through page sharing. In addition, the number of small page sharing opportunities within the large pages can be used to estimate the total amount of memory that could be reclaimed through page sharing.

公开(公告)号：US20200026544A1

公开(公告)日：2020-01-23

申请号：US16585701

申请日：2019-09-27

Applicant: VMware, Inc.

Inventor： Xavier DEGUILLARD ,  Mukund GUNTI ,  Adrian DRZEWIECKI ,  Rajesh VENKATASUBRAMANIAN

IPC: G06F9/455 ,  G06F3/06 ,  G06F8/656 ,  G06F9/4401

Abstract: A hypervisor exchange, e.g., an upgrade, can include consolidating resident virtual machines into a single host virtual machine, exchanging an old hypervisor with a new (upgraded) hypervisor, and disassociating the virtual resident virtual machines by migrating them to the new hypervisor. The consolidating can involve migrating the resident virtual machines from the old hypervisor to a guest hypervisor on the host virtual machine. The exchange can involve: 1) suspending the host virtual machine before the exchange; and 2) resuming the host virtual machine after the exchange; or migrating the host virtual machine from a partition including the old hypervisor to a partition hosting the new hypervisor. Either way, an exchange (upgrade) is achieve without requiring a bandwidth consuming migration over a network to a standby machine.

公开(公告)号：US20190004838A1

公开(公告)日：2019-01-03

申请号：US15636527

申请日：2017-06-28

Applicant: VMware, Inc.

Inventor： Rajesh VENKATASUBRAMANIAN ,  Kiran TATI ,  Syed Zahed KHURASANI ,  Ashish KAILA ,  Mukund GUNTI

IPC: G06F9/455 ,  G06F9/44 ,  G06F3/06 ,  G06F12/08

CPC classification number: G06F9/45558 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/067 ,  G06F9/4401 ,  G06F12/08 ,  G06F2009/45562 ,  G06F2009/45575 ,  G06F2009/45579 ,  G06F2009/45583

Abstract: A first hypervisor uses a first version of a virtual-memory file system (VMemFS) suspends virtual machines. A second hypervisor uses a instance of the VMemFS, the version of which may be the same or different from the first version. The VMemFS is designed so that an instance of the same or a later version of the VMemFS can read and ingest information in memory written to memory by another instance of the VMemFS. Accordingly, the second hypervisor resumes the virtual machines, effecting an update or other swap of hypervisors with minimal interruption. In other examples, the swapped hypervisors support process containers or simply support virtual memory.

公开(公告)号：US20150095585A1

公开(公告)日：2015-04-02

申请号：US14042288

申请日：2013-09-30

Applicant: VMware, Inc.

Inventor： Pratap SUBRAHMANYAM ,  Rajesh VENKATASUBRAMANIAN

IPC: G06F3/06 ,  G06F12/10 ,  G06F12/08

CPC classification number: G06F3/0647 ,  G06F3/062 ,  G06F3/0683 ,  G06F11/14 ,  G06F11/1484 ,  G06F11/1666 ,  G06F11/20 ,  G06F11/2097

Abstract: Updates to nonvolatile memory pages are mirrored so that certain features of a computer system, such as live migration of applications, fault tolerance, and high availability, will be available even when nonvolatile memory is local to the computer system. Mirroring may be carried out when a cache flush instruction is executed to flush contents of the cache into nonvolatile memory. In addition, mirroring may be carried out asynchronously with respect to execution of the cache flush instruction by retrieving content that is to be mirrored from the nonvolatile memory using memory addresses of the nonvolatile memory corresponding to target memory addresses of the cache flush instruction.

公开(公告)号：US20170031819A1

公开(公告)日：2017-02-02

申请号：US15289893

申请日：2016-10-10

Applicant: VMware, Inc.

Inventor： Rajesh VENKATASUBRAMANIAN ,  Puneet ZAROO ,  Alexandre MILOUCHEV

IPC: G06F12/08 ,  G06F9/50 ,  G06F9/455 ,  G06F12/0811 ,  G06F12/084

CPC classification number: G06F12/08 ,  G06F3/0604 ,  G06F3/0614 ,  G06F3/0662 ,  G06F3/0665 ,  G06F9/45558 ,  G06F9/5033 ,  G06F9/5083 ,  G06F12/0292 ,  G06F12/0638 ,  G06F12/0811 ,  G06F12/084 ,  G06F12/0868 ,  G06F12/0891 ,  G06F12/10 ,  G06F12/1009 ,  G06F12/1072 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/152 ,  G06F2212/2542 ,  G06F2212/6042 ,  G06F2212/62

Abstract: In a system having non-uniform memory access architecture, with a plurality of nodes, memory access by entities such as virtual CPUs is estimated by invalidating a selected sub-set of memory units, and then detecting and compiling access statistics, for example by counting the page faults that arise when any virtual CPU accesses an invalidated memory unit. The entities, or pairs of entities, may then be migrated or otherwise co-located on the node for which they have greatest memory locality.

Abstract translation: 在具有不均匀的存储器访问架构的系统中，通过多个节点，通过使所选择的存储单元的子集失效，然后检测和编译访问统计信息来估计诸如虚拟CPU之类的实体的存储器访问，例如通过计数 任何虚拟CPU访问无效内存单元时出现的页面故障。 然后可以将实体或实体对迁移或以其他方式共同位于它们具有最大存储器位置的节点上。

公开(公告)号：US20150052287A1

公开(公告)日：2015-02-19

申请号：US14201787

申请日：2014-03-07

Applicant: VMware, Inc.

Inventor： Rajesh VENKATASUBRAMANIAN ,  Puneet ZAROO ,  Alexandre MILOUCHEV

IPC: G06F3/06

CPC classification number: G06F12/08 ,  G06F3/0604 ,  G06F3/0614 ,  G06F3/0662 ,  G06F3/0665 ,  G06F9/45558 ,  G06F9/5033 ,  G06F9/5083 ,  G06F12/0292 ,  G06F12/0638 ,  G06F12/0811 ,  G06F12/084 ,  G06F12/0868 ,  G06F12/0891 ,  G06F12/10 ,  G06F12/1009 ,  G06F12/1072 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/152 ,  G06F2212/2542 ,  G06F2212/6042 ,  G06F2212/62

Abstract: In a system having non-uniform memory access architecture, with a plurality of nodes, memory access by entities such as virtual CPUs is estimated by invalidating a selected sub-set of memory units, and then detecting and compiling access statistics, for example by counting the page faults that arise when any virtual CPU accesses an invalidated memory unit. The entities, or pairs of entities, may then be migrated or otherwise co-located on the node for which they have greatest memory locality.

Abstract translation: 在具有不均匀的存储器访问架构的系统中，通过多个节点，通过使所选择的存储单元的子集失效，然后检测和编译访问统计信息来估计诸如虚拟CPU之类的实体的存储器访问，例如通过计数 任何虚拟CPU访问无效内存单元时出现的页面故障。 然后可以将实体或实体对迁移或以其他方式共同位于它们具有最大存储器位置的节点上。

公开(公告)号：US20140189248A1

公开(公告)日：2014-07-03

申请号：US14196100

申请日：2014-03-04

Applicant: VMware, Inc.

Inventor： Carl A. WALDSPURGER ,  Rajesh VENKATASUBRAMANIAN ,  Alexander Thomas GARTHWAITE ,  Yury BASKAKOV ,  Puneet ZAROO

IPC: G06F12/12

CPC classification number: G06F12/122 ,  G06F9/45558 ,  G06F11/3471 ,  G06F12/123 ,  G06F2009/45583 ,  G06F2201/815 ,  G06F2201/88

Abstract: Miss rate curves are constructed in a resource-efficient manner so that they can be constructed and memory management decisions can be made while the workloads are running. The resource-efficient technique includes the steps of selecting a subset of memory pages for the workload, maintaining a least recently used (LRU) data structure for the selected memory pages, detecting accesses to the selected memory pages and updating the LRU data structure in response to the detected accesses, and generating data for constructing a miss-rate curve for the workload using the LRU data structure. After a memory page is accessed, the memory page may be left untraced for a period of time, after which the memory page is retraced.

Abstract translation: 错误率曲线以资源有效的方式构建，以便可以构建它们，并且可以在工作负载运行时进行内存管理决策。 资源有效的技术包括以下步骤：为工作负载选择存储器页面的子集，维护所选择的存储器页面的最近最少使用的（LRU）数据结构，检测对所选择的存储器页面的访问并响应更新LRU数据结构 并且使用LRU数据结构生成用于构建工作负载的错过率曲线的数据。 在访问存储器页面之后，存储器页面可以保持未被跟踪一段时间，之后再回读存储器页面。

公开(公告)号：US20240256459A1

公开(公告)日：2024-08-01

申请号：US18160221

申请日：2023-01-26

Applicant: VMware, Inc.

Inventor： Pratap SUBRAHMANYAM ,  Venkata Subhash Reddy PEDDAMALLU ,  Isam Wadih AKKAWI ,  Andreas Georg NOWATZYK ,  Rajesh VENKATASUBRAMANIAN ,  Yijiang YUAN ,  Adarsh Seethanadi NAYAK ,  Nishchay DUA ,  Sreekanth SETTY

IPC: G06F12/0882 ,  G06F12/0891 ,  G06F12/1009

CPC classification number: G06F12/0882 ,  G06F12/0891 ,  G06F12/1009 ,  G06F12/1027

Abstract: A memory hierarchy includes a first memory and a second memory that is at a lower position in the memory hierarchy than the first memory. A method of managing the memory hierarchy includes: observing, over a first period of time, accesses to pages of the first memory; in response to determining that no page in a first group of pages was accessed during the first period of time, moving each page in the first group of pages from the first memory to the second memory; and in response to determining that the number of pages in other groups of pages of the first memory, which were accessed during the first period of time, is less than a threshold number of pages, moving each page in the other group of pages, that was not accessed during the first period of time from the first memory to the second memory.

公开(公告)号：US20230297257A1

公开(公告)日：2023-09-21

申请号：US18323279

申请日：2023-05-24

Applicant: VMware, Inc.

Inventor： Marcos K. AGUILERA ,  Keerthi KUMAR ,  Pramod KUMAR ,  Pratap SUBRAHMANYAM ,  Sairam VEERASWAMY ,  Rajesh VENKATASUBRAMANIAN

IPC: G06F3/06

CPC classification number: G06F3/0631 ,  G06F3/067 ,  G06F3/0604 ,  G06F3/0659

Abstract: Disclosed are various embodiments for improving resiliency and performance of clustered memory. A computing device can acquire a chunk of byte-addressable memory from a cluster memory host. The computing device can then identify an active set of allocated memory pages and an inactive set of allocated memory pages for a process executing on the computing device. Next, the computing device can store the active set of allocated memory pages for the process in the memory of the computing device. Finally, the computing device can store the inactive set of allocated memory pages for the process in the chunk of byte-addressable memory of the cluster memory host.