Patents by Inventor Lenin Singaravelu

Lenin Singaravelu 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: 10706079
    Abstract: Certain embodiments described herein are generally directed to improving performance of one or more machines within a system by clustering multidimensional datasets relating to the performance of the machines using inter-group dissimilarities between groups of the dataset. The method for improving performance of one or more machines within a system, includes forming a multidimensional dataset having a plurality of groups using performance related data associated with one or more machines in the system, clustering the plurality of groups into one or more clusters based on intergroup dissimilarities between the plurality of groups, identifying one or more anomalous clusters from among the one or more clusters, identifying the one or more anomalous groups in the one or more anomalous clusters, and adjusting a configuration of the system to improve the performance of the one or more machines corresponding to the one or more anomalous groups.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: July 7, 2020
    Assignee: VMware, Inc.
    Inventors: Debessay Fesehaye Kassa, Lenin Singaravelu, Xiaobo Huang, Amitabha Banerjee, Ruijin Zhou
  • Patent number: 10652129
    Abstract: A method of optimizing network processing in a system comprising a physical host and a set of physical network interface controllers (PNICs) is provided. The physical host includes a forwarding element. The method includes determining that a set of conditions is satisfied to bypass the forwarding element for exchanging packets between a particular data compute node (DCN) and a particular PNIC. The set of conditions includes the particular DCN being the only DCN connected to the forwarding element and the particular PNIC being the only PNIC connected to the forwarding element. The method exchanges packets between the particular DCN and the particular PNIC bypassing the forwarding element. The method determines that at least one condition in said set of conditions is not satisfied. The method utilizes the forwarding element to exchange packets between the particular DCN and the particular PNIC.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: May 12, 2020
    Assignee: VMware, Inc.
    Inventors: Lenin Singaravelu, Jin Heo, Jui-Ting Weng, Ayyappan Veeraiyan, Yong Wang
  • Patent number: 10554514
    Abstract: Exemplary methods, apparatuses, and systems include receiving time series data for each of a plurality of performance metrics. The time series data is sorted into buckets based upon an amount of variation of time series data values for each performance metric. The time series data in each bucket is divided into first and second clusters of time series data points. The bucket having the greatest distance between clusters is used to determine a performance metric having a greatest distance between clusters. The performance metric having the greatest distance between clusters is reported as a potential root cause of a performance issue.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: February 4, 2020
    Assignee: VMware, Inc.
    Inventors: Chien-Chia Chen, Lenin Singaravelu, Ruijin Zhou, Xiaobo Huang
  • Publication number: 20190228097
    Abstract: Certain embodiments described herein are generally directed to improving performance of one or more machines within a system by clustering multidimensional datasets relating to the performance of the machines using inter-group dissimilarities between groups of the dataset. The method for improving performance of one or more machines within a system, includes forming a multidimensional dataset having a plurality of groups using performance related data associated with one or more machines in the system, clustering the plurality of groups into one or more clusters based on intergroup dissimilarities between the plurality of groups, identifying one or more anomalous clusters from among the one or more clusters, identifying the one or more anomalous groups in the one or more anomalous clusters, and adjusting a configuration of the system to improve the performance of the one or more machines corresponding to the one or more anomalous groups.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 25, 2019
    Inventors: Debessay Fesehaye KASSA, Lenin SINGARAVELU, Xiaobo HUANG, Amitabha BANERJEE, Ruijin ZHOU
  • Publication number: 20190230024
    Abstract: In order to facilitate efficient and scalable lookup of current hop limits of transmitted packets, a communications device embeds hop limit values along with other connection parameters in a connection data structure. To transmit a packet for a particular connection, the communications device retrieves the data structure for the particular connection and applies the hop limit value embedded in the data structure to the packet for transmission. To keep track of the hop limits being embedded in different data structures of different connections, the communications device use a binary search in which each node of the search tree correspond to a different connection. The communications device maintains one such search tree per communications interface.
    Type: Application
    Filed: January 21, 2019
    Publication date: July 25, 2019
    Inventors: Amitabha Banerjee, Lenin Singaravelu
  • Patent number: 10320921
    Abstract: A method of optimizing network processing in a system comprising a physical host and a set of physical network interface controllers (PNICs) is provided. The physical host includes a forwarding element. The method includes determining that a set of conditions is satisfied to bypass the forwarding element for exchanging packets between a particular data compute node (DCN) and a particular PNIC. The set of conditions includes the particular DCN being the only DCN connected to the forwarding element and the particular PNIC being the only PNIC connected to the forwarding element. The method exchanges packets between the particular DCN and the particular PNIC bypassing the forwarding element. The method determines that at least one condition in said set of conditions is not satisfied. The method utilizes the forwarding element to exchange packets between the particular DCN and the particular PNIC.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: June 11, 2019
    Assignee: VMware, Inc.
    Inventors: Lenin Singaravelu, Jin Heo, Jui-Ting Weng, Ayyappan Veeraiyan, Yong Wang
  • Publication number: 20190140984
    Abstract: Some embodiments provide a queue management system that efficiently and dynamically manages multiple queues that process traffic to and from multiple virtual machines (VMs) executing on a host. This system manages the queues by (1) breaking up the queues into different priority pools with the higher priority pools reserved for particular types of traffic or VM (e.g., traffic for VMs that need low latency), (2) dynamically adjusting the number of queues in each pool (i.e., dynamically adjusting the size of the pools), (3) dynamically reassigning a VM to a new queue based on one or more optimization criteria (e.g., criteria relating to the underutilization or overutilization of the queue).
    Type: Application
    Filed: July 17, 2018
    Publication date: May 9, 2019
    Inventors: Shilpi Agarwal, Lenin Singaravelu, Ayyappan Veeraiyan, Chien-Chia Chen
  • Patent number: 10187294
    Abstract: In order to facilitate efficient and scalable lookup of current hop limits of transmitted packets, a communications device embeds hop limit values along with other connection parameters in a connection data structure. To transmit a packet for a particular connection, the communications device retrieves the data structure for the particular connection and applies the hop limit value embedded in the data structure to the packet for transmission. To keep track of the hop limits being embedded in different data structures of different connections, the communications device use a binary search in which each node of the search tree correspond to a different connection. The communications device maintains one such search tree per communications interface.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: January 22, 2019
    Assignee: VMware, Inc.
    Inventors: Amitabha Banerjee, Lenin Singaravelu
  • Patent number: 10073711
    Abstract: A host computer has a virtualization software that supports execution of a plurality of virtual machines, where the virtualization software includes a virtual machine monitor for each of the virtual machines, and where each virtual machine monitor emulates a virtual central processing unit (CPU) for a corresponding virtual machine. A virtual machine monitor halts execution of a virtual CPU of a virtual machine by receiving a first halt instruction from a corresponding virtual machine and determining whether the virtual machine is latency sensitive. If the virtual machine is latency sensitive, then a second halt instruction is issued from the virtual machine monitor to halt a physical CPU on which the virtual CPU executes. If the virtual machine is not latency sensitive, then a system call to a kernel executing on the host computer is executed to indicate to the kernel that the virtual CPU is in an idle state.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: September 11, 2018
    Assignee: WMware, Inc.
    Inventors: Haoqiang Zheng, Lenin Singaravelu, Shilpi Agarwal, Daniel Michael Hecht, Garrett Smith
  • Patent number: 10061610
    Abstract: A host computer has one or more physical central processing units (CPUs) that support the execution of a plurality of containers, where the containers each include one or more processes. Each process of a container is assigned to execute exclusively on a corresponding physical CPU when the corresponding container is determined to be latency sensitive. The assignment of a process to execute exclusively on a corresponding physical CPU includes the migration of tasks from the corresponding physical CPU to one or more other physical CPUs of the host system, and the directing of task and interrupt processing to the one or more other physical CPUs. Tasks of of the process corresponding to the container are then executed on the corresponding physical CPU.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: August 28, 2018
    Assignee: VMware, Inc.
    Inventors: Haoqiang Zheng, Lenin Singaravelu, Shilpi Agarwal, Daniel Michael Hecht, Garrett Smith
  • Patent number: 10027605
    Abstract: Some embodiments provide a queue management system that efficiently and dynamically manages multiple queues that process traffic to and from multiple virtual machines (VMs) executing on a host. This system manages the queues by (1) breaking up the queues into different priority pools with the higher priority pools reserved for particular types of traffic or VM (e.g., traffic for VMs that need low latency), (2) dynamically adjusting the number of queues in each pool (i.e., dynamically adjusting the size of the pools), (3) dynamically reassigning a VM to a new queue based on one or more optimization criteria (e.g., criteria relating to the underutilization or overutilization of the queue).
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: July 17, 2018
    Assignee: VMware, Inc.
    Inventors: Shilpi Agarwal, Lenin Singaravelu, Ayyappan Veeraiyan, Chien-Chia Chen
  • Patent number: 9992113
    Abstract: Techniques disclosed herein provide an approach for using receive side scaling (RSS) offloads from a physical network interface controller (PNIC) to improve the performance of a virtual network interface controller (VNIC). In one embodiment, the PNIC is configured to write hash values it computes for RSS purposes to packets themselves. The VNIC then reads the hash values from the packets and places the packets into VNIC RSS queues, which are processed by respective CPUs, based on the hash values. CPU overhead is thereby reduced, as RSS processing by the VNIC no longer requires computing hash values. In another embodiment in which the number of PNIC RSS queues and VNIC RSS queues are identical, the VNIC may map packets from PNIC RSS queues to VNIC RSS queues using the PNIC RSS queue ID numbers, which also does not require the computing RSS hash values.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: June 5, 2018
    Assignee: VMware, Inc.
    Inventors: Rishi Mehta, Lenin Singaravelu
  • Publication number: 20180115472
    Abstract: Exemplary methods, apparatuses, and systems include receiving time series data for each of a plurality of performance metrics. The time series data is sorted into buckets based upon an amount of variation of time series data values for each performance metric. The time series data in each bucket is divided into first and second clusters of time series data points. The bucket having the greatest distance between clusters is used to determine a performance metric having a greatest distance between clusters. The performance metric having the greatest distance between clusters is reported as a potential root cause of a performance issue.
    Type: Application
    Filed: October 26, 2016
    Publication date: April 26, 2018
    Inventors: Chien-Chia CHEN, Lenin SINGARAVELU, Ruijin ZHOU, Xiaobo HUANG
  • Patent number: 9921864
    Abstract: A tuning engine for a virtualized computing system is described that periodically collect performance metrics from the virtualized computing system, and detects whether a change in system state has occurred based on the collected metrics. The tuning engine may determine whether the virtualized computing system is densely virtualized, and accordingly modify operations and configuration settings of various components in charge of handling networking for the virtualized computing system.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: March 20, 2018
    Assignee: VMware, Inc.
    Inventors: Lenin Singaravelu, Chien-Chia Chen
  • Patent number: 9843540
    Abstract: Some embodiments provide a queue management system that efficiently and dynamically manages multiple queues that process traffic to and from multiple virtual machines (VMs) executing on a host. This system manages the queues by (1) breaking up the queues into different priority pools with the higher priority pools reserved for particular types of traffic or VM (e.g., traffic for VMs that need low latency), (2) dynamically adjusting the number of queues in each pool (i.e., dynamically adjusting the size of the pools), (3) dynamically reassigning a VM to a new queue based on one or more optimization criteria (e.g., criteria relating to the underutilization or overutilization of the queue).
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: December 12, 2017
    Assignee: VMware, Inc.
    Inventors: Shilpi Agarwal, Lenin Singaravelu, Ayyappan Veeraiyan, Chien-Chia Chen
  • Publication number: 20170331723
    Abstract: In order to facilitate efficient and scalable lookup of current hop limits of transmitted packets, a communications device embeds hop limit values along with other connection parameters in a connection data structure. To transmit a packet for a particular connection, the communications device retrieves the data structure for the particular connection and applies the hop limit value embedded in the data structure to the packet for transmission. To keep track of the hop limits being embedded in different data structures of different connections, the communications device use a binary search in which each node of the search tree correspond to a different connection. The communications device maintains one such search tree per communications interface.
    Type: Application
    Filed: May 29, 2017
    Publication date: November 16, 2017
    Inventors: Amitabha Banerjee, Lenin Singaravelu
  • Publication number: 20170310571
    Abstract: A method of optimizing network processing in a system comprising a physical host and a set of physical network interface controllers (PNICs) is provided. The physical host includes a forwarding element. The method includes determining that a set of conditions is satisfied to bypass the forwarding element for exchanging packets between a particular data compute node (DCN) and a particular PNIC. The set of conditions includes the particular DCN being the only DCN connected to the forwarding element and the particular PNIC being the only PNIC connected to the forwarding element. The method exchanges packets between the particular DCN and the particular PNIC bypassing the forwarding element. The method determines that at least one condition in said set of conditions is not satisfied. The method utilizes the forwarding element to exchange packets between the particular DCN and the particular PNIC.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 26, 2017
    Inventors: Lenin Singaravelu, Jin Heo, Jui-Ting Weng, Ayyappan Veeraiyan, Yong Wang
  • Publication number: 20170308394
    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: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Inventors: Haoqiang ZHENG, Lenin SINGARAVELU, Shilpi AGARWAL, Daniel Michael HECHT, Garrett SMITH
  • Publication number: 20170249186
    Abstract: A host computer has one or more physical central processing units (CPUs) that support the execution of a plurality of containers, where the containers each include one or more processes. Each process of a container is assigned to execute exclusively on a corresponding physical CPU when the corresponding container is determined to be latency sensitive. The assignment of a process to execute exclusively on a corresponding physical CPU includes the migration of tasks from the corresponding physical CPU to one or more other physical CPUs of the host system, and the directing of task and interrupt processing to the one or more other physical CPUs. Tasks of of the process corresponding to the container are then executed on the corresponding physical CPU.
    Type: Application
    Filed: May 11, 2017
    Publication date: August 31, 2017
    Inventors: Haoqiang ZHENG, Lenin SINGARAVELU, Shilpi AGARWAL, Daniel Michael HECHT, Garrett SMITH
  • Patent number: 9703589
    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 processing of the packet handling interrupt is delayed.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: July 11, 2017
    Assignee: VMware, Inc.
    Inventors: Haoqiang Zheng, Lenin Singaravelu, Shilpi Agarwal, Daniel Michael Hecht, Garrett Smith