Patents by Inventor Haoqiang Zheng

Haoqiang Zheng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11186651
    Abstract: Disclosed are monoclonal antibodies that specifically bind emtricitabine (FTC). Methods are also disclosed for using these antibodies to detect FTC in samples. In some embodiments, these methods are of use for determining if a subject is complying with a therapeutic or prophylactic protocol. In other embodiments, methods are disclosed for determining the dose of FTC to administer to a subject.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: November 30, 2021
    Assignee: The United States of America as represented by the Secretary, Department of Health and Human Services
    Inventors: Timothy Clyde Granade, Ae Saekhou Youngpairoj, William Marshall Switzer, Walid M. Heneine, Chou-Pong Pau, HaoQiang Zheng, Jan Pohl
  • Patent number: 11182183
    Abstract: Disclosed are various embodiments that utilize conflict cost for workload placements in datacenter environments. In some examples, a protected memory level is identified for a computing environment. The computing environment includes a number of processor resources. Incompatible processor workloads are prohibited from concurrently executing on parallel processor resources. Parallel processor resources share memory at the protected memory level. A number of conflict costs are determined for a processor workload. Each conflict cost is determined based on a measure of compatibility between the processor workload and a parallel processor resource that shares a particular memory with the respective processor resource. The processor workload is assigned to execute on a processor resource associated with a minimum conflict cost.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: November 23, 2021
    Assignee: VMWARE, INC.
    Inventors: Xunjia Lu, Haoqiang Zheng, David Dunn, Fred Jacobs
  • Patent number: 11182189
    Abstract: Disclosed are various embodiments for distributing the load of a plurality of virtual machines across a plurality of hosts. A potential new host for a virtual machine executing on a current host is identified. A gain rate associated with migration of the virtual machine from the current host to the potential new host is calculated. A gain duration associated with migration of the virtual machine from the current host to the potential new host is also calculated. A migration cost for migration of the virtual machine from the current host to the potential new host, the migration cost being based on the gain rate and the gain duration is determined. It is then determined whether the migration cost is below a predefined threshold cost. Migration of the virtual machine from the current host to the optimal host is initiated in response to a determination that the migration cost is below the predefined threshold.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: November 23, 2021
    Assignee: VMWARE, INC.
    Inventors: Haoqiang Zheng, Fei Guo, Zhelong Pan
  • Patent number: 11126452
    Abstract: Disclosed are various embodiments for distributing the load of a plurality of virtual machines across a plurality of hosts. A first plurality of efficiency ratings for a current host of a virtual machine are calculated. A second plurality of efficiency ratings for a potential new host of the virtual machine are also calculated. The first plurality of efficiency ratings are compared to the second plurality of efficiency ratings to determine that the potential new host for the virtual machine is an optimal host for the virtual machine. Then migration of the virtual machine from the current host to the optimal host is initiated.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: September 21, 2021
    Assignee: VMWARE, INC.
    Inventors: Haoqiang Zheng, Fei Guo, Zhelong Pan
  • Publication number: 20210253738
    Abstract: Disclosed are monoclonal antibodies that specifically bind emtricitabine (FTC). Methods are also disclosed for using these antibodies to detect FTC in samples. In some embodiments, these methods are of use for determining if a subject is complying with a therapeutic or prophylactic protocol. In other embodiments, methods are disclosed for determining the dose of FTC to administer to a subject.
    Type: Application
    Filed: July 10, 2019
    Publication date: August 19, 2021
    Applicant: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVIC
    Inventors: Timothy Clyde Granade, Ae Saekhou Youngpairoj, William Marshall Switzer, Walid M. Heneine, Chou-Pong Pau, HaoQiang Zheng, Jan Pohl
  • Publication number: 20210211492
    Abstract: Load balancing across hosts in a computer system is triggered based on pairwise comparisons of resource utilization at different host. A method for load balancing across hosts includes the steps of determining a resource utilization difference between first and second hosts, wherein the first host has a higher resource utilization than the second host, comparing the resource utilization difference against a threshold difference, and upon determining that the resource utilization difference exceeds the threshold difference, selecting a workload executing in the first host for migration to the second host.
    Type: Application
    Filed: March 22, 2021
    Publication date: July 8, 2021
    Inventors: Badhrinath Sampathkumar, Zhelong Pan, Haoqiang Zheng, Fei Guo, Sabareesh Subramaniam
  • Patent number: 11036555
    Abstract: The disclosure provides a method of performing a workload on a virtual machine (VM) executing on a host comprising one or more physical central processing units (pCPUs) is provided. The method further includes setting a quality of service (QoS) metric associated with the VM, the QoS metric indicating a time period. The method further includes setting a bandwidth metric associated with the VM, the bandwidth metric indicating a percentage. The method further includes allocating by a central processing unit (CPU) scheduler to a virtual CPU (vCPU) of the VM one of the one or more pCPUs periodically every time period, wherein for every time period the one of the one or more pCPUs is allocated to the vCPU for a duration that is the percentage of the time period based on the QoS metric and the bandwidth metric. The method further includes executing the workload on the virtual machine with the vCPU according to the allocation of the one or more pCPUs.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: June 15, 2021
    Assignee: VMware, Inc.
    Inventors: Xunjia Lu, Haoqiang Zheng, Bi Wu
  • Patent number: 10958719
    Abstract: Load balancing across hosts in a computer system is triggered based on pairwise comparisons of resource utilization at different host. A method for load balancing across hosts includes the steps of determining a resource utilization difference between first and second hosts, wherein the first host has a higher resource utilization than the second host, comparing the resource utilization difference against a threshold difference, and upon determining that the resource utilization difference exceeds the threshold difference, selecting a workload executing in the first host for migration to the second host.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: March 23, 2021
    Assignee: VMware, Inc.
    Inventors: Badhrinath Sampathkumar, Zhelong Pan, Haoqiang Zheng, Fei Guo, Sabareesh Subramaniam
  • Publication number: 20210019159
    Abstract: Disclosed are various embodiments that utilize conflict cost for workload placements in datacenter environments. In some examples, a protected memory level is identified for a computing environment. The computing environment includes a number of processor resources. Incompatible processor workloads are prohibited from concurrently executing on parallel processor resources. Parallel processor resources share memory at the protected memory level. A number of conflict costs are determined for a processor workload. Each conflict cost is determined based on a measure of compatibility between the processor workload and a parallel processor resource that shares a particular memory with the respective processor resource. The processor workload is assigned to execute on a processor resource associated with a minimum conflict cost.
    Type: Application
    Filed: July 15, 2019
    Publication date: January 21, 2021
    Inventors: Xunjia Lu, Haoqiang Zheng, David Dunn, Fred Jacobs
  • Patent number: 10860356
    Abstract: A host computer has a plurality of containers including a first container executing therein, where the host also includes a physical network interface controller (NIC). A packet handling interrupt is detected upon receipt of a first data packet associated with the first container. If the first virtual machine is latency sensitive, then the packet handling interrupt is processed. If the first virtual machine is not latency sensitive, then the first data packet is queued and and processing of the packet handling interrupt is delayed.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: December 8, 2020
    Assignee: VMware, Inc.
    Inventors: Haoqiang Zheng, Lenin Singaravelu, Shilpi Agarwal, Daniel Michael Hecht, Garrett Smith
  • Patent number: 10776151
    Abstract: Systems and methods for performing selection of non-uniform memory access (NUMA) nodes for mapping of virtual central processing unit (vCPU) operations to physical processors are provided. A CPU scheduler evaluates the latency between various candidate processors and the memory associated with the vCPU, and the size of the working set of the associated memory, and the vCPU scheduler selects an optimal processor for execution of a vCPU based on the expected memory access latency and the characteristics of the vCPU and the processors. The systems and methods further provide for monitoring system characteristics and rescheduling the vCPUs when other placements provide improved performance and efficiency.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: September 15, 2020
    Assignee: VMWARE, INC.
    Inventors: Seongbeom Kim, Haoqiang Zheng, Rajesh Venkatasubramanian, Puneet Zaroo
  • Patent number: 10691495
    Abstract: The disclosure provides techniques for scheduling a jitterless workload on a virtual machine (VM) executing on a host comprising one or more pCPUs comprising a first subset of the one or more pCPUs and a second subset of the one or more pCPUs. The techniques further include creating a jitterless zone, wherein the jitterless zone includes the first subset of the one or more pCPUs. The techniques further include determining whether a vCPU of the VM is used to execute a jitterless workload or a non-jitterless workload. The techniques further include allocating by a CPU scheduler to the vCPU at least one of the pCPUs in the jitterless zone when the vCPU of the VM is used to execute a jitterless workload. The techniques further include scheduling the jitterless workload for execution by the vCPU on the allocated at least one of the pCPUs in the jitterless zone.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: June 23, 2020
    Assignee: VMware, Inc.
    Inventors: Xunjia Lu, Haoqiang Zheng, Bi Wu
  • Publication number: 20200065125
    Abstract: Disclosed are various embodiments for distributing the load of a plurality of virtual machines across a plurality of hosts. A first plurality of efficiency ratings for a current host of a virtual machine are calculated. A second plurality of efficiency ratings for a potential new host of the virtual machine are also calculated. The first plurality of efficiency ratings are compared to the second plurality of efficiency ratings to determine that the potential new host for the virtual machine is an optimal host for the virtual machine. Then migration of the virtual machine from the current host to the optimal host is initiated.
    Type: Application
    Filed: August 24, 2018
    Publication date: February 27, 2020
    Inventors: Haoqiang Zheng, Fei Guo, Zhelong Pan
  • Publication number: 20200065126
    Abstract: Disclosed are various embodiments for distributing the load of a plurality of virtual machines across a plurality of hosts. A potential new host for a virtual machine executing on a current host is identified. A gain rate associated with migration of the virtual machine from the current host to the potential new host is calculated. A gain duration associated with migration of the virtual machine from the current host to the potential new host is also calculated. A migration cost for migration of the virtual machine from the current host to the potential new host, the migration cost being based on the gain rate and the gain duration is determined. It is then determined whether the migration cost is below a predefined threshold cost. Migration of the virtual machine from the current host to the optimal host is initiated in response to a determination that the migration cost is below the predefined threshold.
    Type: Application
    Filed: August 24, 2018
    Publication date: February 27, 2020
    Inventors: Haoqiang Zheng, Fei Guo, Zhelong Pan
  • Patent number: 10572282
    Abstract: Techniques for implicit coscheduling of CPUs to improve corun performance of scheduled contexts are described. One technique minimizes skew by implementing corun migrations, and another technique minimizes skew by implementing a corun bonus mechanism. Skew between schedulable contexts may be calculated based on guest progress, where guest progress represents time spent executing guest operating system and guest application code. A non-linear skew catch-up algorithm is described that adjusts the progress of a context when the progress falls far behind its sibling contexts.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: February 25, 2020
    Assignee: VMware, Inc.
    Inventors: Haoqiang Zheng, Carl A. Waldspurger
  • Publication number: 20200059513
    Abstract: Load balancing across hosts in a computer system is triggered based on pairwise comparisons of resource utilization at different host. A method for load balancing across hosts includes the steps of determining a resource utilization difference between first and second hosts, wherein the first host has a higher resource utilization than the second host, comparing the resource utilization difference against a threshold difference, and upon determining that the resource utilization difference exceeds the threshold difference, selecting a workload executing in the first host for migration to the second host.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 20, 2020
    Inventors: Badhrinath Sampathkumar, Zhelong Pan, Haoqiang Zheng, Fei Guo, Sabareesh Subramaniam
  • Publication number: 20200034202
    Abstract: The disclosure provides a method of performing a workload on a virtual machine (VM) executing on a host comprising one or more physical central processing units (pCPUs) is provided. The method further includes setting a quality of service (QoS) metric associated with the VM, the QoS metric indicating a time period. The method further includes setting a bandwidth metric associated with the VM, the bandwidth metric indicating a percentage. The method further includes allocating by a central processing unit (CPU) scheduler to a virtual CPU (vCPU) of the VM one of the one or more pCPUs periodically every time period, wherein for every time period the one of the one or more pCPUs is allocated to the vCPU for a duration that is the percentage of the time period based on the QoS metric and the bandwidth metric. The method further includes executing the workload on the virtual machine with the vCPU according to the allocation of the one or more pCPUs.
    Type: Application
    Filed: July 25, 2018
    Publication date: January 30, 2020
    Inventors: Xunjia LU, Haoqiang ZHENG, Bi WU
  • Publication number: 20200034201
    Abstract: The disclosure provides techniques for scheduling a jitterless workload on a virtual machine (VM) executing on a host comprising one or more pCPUs comprising a first subset of the one or more pCPUs and a second subset of the one or more pCPUs. The techniques further include creating a jitterless zone, wherein the jitterless zone includes the first subset of the one or more pCPUs. The techniques further include determining whether a vCPU of the VM is used to execute a jitterless workload or a non-jitterless workload. The techniques further include allocating by a CPU scheduler to the vCPU at least one of the pCPUs in the jitterless zone when the vCPU of the VM is used to execute a jitterless workload. The techniques further include scheduling the jitterless workload for execution by the vCPU on the allocated at least one of the pCPUs in the jitterless zone.
    Type: Application
    Filed: July 25, 2018
    Publication date: January 30, 2020
    Inventors: Xunjia LU, Haoqiang ZHENG, Bi WU
  • Publication number: 20190370053
    Abstract: A technique is described for managing processor (CPU) resources in a host having virtual machines (VMs) executed thereon. A target size of a VM is determined based on its demand and CPU entitlement. If the VM's current size exceeds the target size, the technique dynamically changes the size of a VM in the host by increasing or decreasing the number of virtual CPUs available to the VM. To “deactivate” virtual CPUs, a high-priority balloon thread is launched and pinned to one of the virtual CPUs targeted for deactivation, and the underlying hypervisor deschedules execution of the virtual CPU accordingly. To “activate” virtual CPUs, the number of virtual CPUs, the launched balloon thread may be killed.
    Type: Application
    Filed: August 20, 2019
    Publication date: December 5, 2019
    Inventor: Haoqiang ZHENG
  • Patent number: 10452572
    Abstract: An approach for providing low-latency and fast response times required by virtual machine (VM) telecommunication (telco) workloads is disclosed. In one embodiment, a kernel scheduler identifies hypervisor system contexts that are outside of traditional virtual central processing unit (CPU) contexts and servicing telco workloads. The scheduler grants each such context exclusive affinity to a respective physical CPU, up to a configurable maximum number of such grants. The scheduler also increases the CPU reservations in a system resource pool for the hypervisor by one CPU, indicating that there is one fewer physical CPU on which VMs may be placed or moved. The exclusive affinities and CPU reservations may be dynamically adjusted as, e.g., new latency-sensitive VMs are powered on with virtual CPUs that need to be granted exclusive affinity to physical CPUs or contexts no longer relevant to telco workloads are demoted to not have exclusive affinity to physical CPUs.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 22, 2019
    Assignee: VMware, Inc.
    Inventors: Xunjia Lu, Haoqiang Zheng