公开(公告)号：US09667528B2

公开(公告)日：2017-05-30

申请号：US14231677

申请日：2014-03-31

Applicant: VMware, Inc.

Inventor： Amitabha Banerjee ,  Lenin Singaravelu

IPC: H04L12/733 ,  H04L12/751 ,  H04L12/753 ,  H04L29/06 ,  H04L12/721

CPC classification number: H04L45/20 ,  H04L45/02 ,  H04L45/48 ,  H04L45/566 ,  H04L69/16

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.

公开(公告)号：US09552216B2

公开(公告)日：2017-01-24

申请号：US14468138

申请日：2014-08-25

Applicant: VMware, Inc.

Inventor： Haoqiang Zheng ,  Lenin Singaravelu ,  Shilpi Agarwal ,  Daniel Michael Hecht ,  Garrett Smith

IPC: G06F9/455 ,  H04L12/875 ,  H04L12/26 ,  H04L12/927 ,  G06F13/24 ,  G06F9/50

CPC classification number: G06F9/4812 ,  G06F9/45533 ,  G06F9/45558 ,  G06F9/4887 ,  G06F9/50 ,  G06F9/5027 ,  G06F9/5033 ,  G06F9/5088 ,  G06F13/24 ,  G06F2009/4557 ,  G06F2009/45575 ,  G06F2009/45591 ,  G06F2209/5017 ,  H04L43/0894 ,  H04L43/16 ,  H04L47/56 ,  H04L47/801

Abstract: A host computer has a plurality of virtual machines executing therein under the control of a hypervisor, where the host also includes a physical network interface controller (NIC). An interrupt controller detects an interrupt generated by the physical NIC, where the interrupt corresponds to a virtual machine. If the virtual machine has exclusive affinity to one or more physical central processing units (CPUs), then the interrupt is forwarded to the virtual machine. If the virtual machine does not have exclusive affinity, then a process in the hypervisor is invoked to forward the interrupt to the virtual machine.

Abstract translation: 主机在管理程序的控制下具有执行其中的多个虚拟机，其中主机还包括物理网络接口控制器（NIC）。 中断控制器检测由物理NIC产生的中断，其中中断对应于虚拟机。 如果虚拟机对一个或多个物理中央处理单元（CPU）具有独占性，则将中断转发到虚拟机。 如果虚拟机没有独占关系，则调用管理程序中的进程以将中断转发到虚拟机。

公开(公告)号：US10554514B2

公开(公告)日：2020-02-04

申请号：US15335310

申请日：2016-10-26

Applicant: VMware, Inc.

Inventor： Chien-Chia Chen ,  Lenin Singaravelu ,  Ruijin Zhou ,  Xiaobo Huang

IPC: H04L12/26

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.

公开(公告)号：US10320921B2

公开(公告)日：2019-06-11

申请号：US14574336

申请日：2014-12-17

Applicant: VMware, Inc.

Inventor： Lenin Singaravelu ,  Jin Heo ,  Jui-Ting Weng ,  Ayyappan Veeraiyan ,  Yong Wang

IPC: H04L12/815 ,  H04L29/08 ,  H04L12/931 ,  G06F9/455 ,  H04L12/741 ,  H04L29/06 ,  H04L12/721 ,  H04L12/851 ,  H04L12/861

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.

公开(公告)号：US20190140984A1

公开(公告)日：2019-05-09

申请号：US16038166

申请日：2018-07-17

Applicant: VMware, Inc.

Inventor： Shilpi Agarwal ,  Lenin Singaravelu ,  Ayyappan Veeraiyan ,  Chien-Chia Chen

IPC: H04L12/861 ,  H04L12/863 ,  H04L12/935 ,  H04L12/911 ,  H04L12/851 ,  H04L12/859 ,  H04L12/26

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).

公开(公告)号：US09992113B2

公开(公告)日：2018-06-05

申请号：US14755674

申请日：2015-06-30

Applicant: VMware, Inc.

Inventor： Rishi Mehta ,  Lenin Singaravelu

IPC: H04L12/743 ,  H04L12/861 ,  H04L29/08 ,  G06F9/455 ,  G06F9/52

CPC classification number: H04L45/7453 ,  G06F9/455 ,  G06F9/526 ,  H04L49/90 ,  H04L67/1097

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.

公开(公告)号：US09843540B2

公开(公告)日：2017-12-12

申请号：US14137957

申请日：2013-12-20

Applicant: VMware, Inc.

Inventor： Shilpi Agarwal ,  Lenin Singaravelu ,  Ayyappan Veeraiyan ,  Chien-Chia Chen

IPC: H04L12/861 ,  H04L12/863 ,  H04L12/935 ,  H04L12/851 ,  H04L12/859 ,  H04L12/911 ,  H04L12/26

CPC classification number: H04L49/9047 ,  H04L43/0888 ,  H04L47/2475 ,  H04L47/2483 ,  H04L47/6295 ,  H04L47/781 ,  H04L49/30

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).

公开(公告)号：US20170310571A1

公开(公告)日：2017-10-26

申请号：US15640281

申请日：2017-06-30

Applicant: VMware, Inc.

Inventor： Lenin Singaravelu ,  Jin Heo ,  Jui-Ting Weng ,  Ayyappan Veeraiyan ,  Yong Wang

IPC: H04L12/26 ,  G06F9/455 ,  H04L12/841

CPC classification number: H04L43/16 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L43/0894 ,  H04L43/103 ,  H04L47/28

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.

公开(公告)号：US09699060B2

公开(公告)日：2017-07-04

申请号：US14574354

申请日：2014-12-17

Applicant: VMware, Inc.

Inventor： Lenin Singaravelu ,  Jin Heo ,  Jui-Ting Weng ,  Ayyappan Veeraiyan ,  Yong Wang

IPC: H04L12/26 ,  H04L12/841 ,  G06F9/455

CPC classification number: H04L43/16 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L43/0894 ,  H04L43/103 ,  H04L47/28

Abstract: A method of high packet rate network processing in a system that includes a physical host and a set of physical network interface controllers (PNICs). The physical host is hosting a set of data compute nodes (DCNs). Each DCN includes a virtual network interface controller (VNIC) for communicating with one or more PNICs to exchange packets. The method determines that a rate of packets received from a particular DCN at the VNIC of the particular DCN exceeds a predetermined threshold. The method performs polling to determine the availability of packets received at the VNIC from the particular DCN while the rate of packets received from the DCN at the VNIC is exceeding the threshold. The method utilizes interrupts to determine the availability of packets received at the VNIC from the particular DCN while the rate of packets received from the DCN at the VNIC does not exceed the threshold.

公开(公告)号：US20160182342A1

公开(公告)日：2016-06-23

申请号：US14574354

申请日：2014-12-17

Applicant: VMware, Inc.

Inventor： Lenin Singaravelu ,  Jin Heo ,  Jui-Ting Weng ,  Ayyappan Veeraiyan ,  Yong Wang

IPC: H04L12/26 ,  G06F9/455 ,  H04L12/841

CPC classification number: H04L43/16 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L43/0894 ,  H04L43/103 ,  H04L47/28

Abstract: A method of high packet rate network processing in a system that includes a physical host and a set of physical network interface controllers (PNICs). The physical host is hosting a set of data compute nodes (DCNs). Each DCN includes a virtual network interface controller (VNIC) for communicating with one or more PNICs to exchange packets. The method determines that a rate of packets received from a particular DCN at the VNIC of the particular DCN exceeds a predetermined threshold. The method performs polling to determine the availability of packets received at the VNIC from the particular DCN while the rate of packets received from the DCN at the VNIC is exceeding the threshold. The method utilizes interrupts to determine the availability of packets received at the VNIC from the particular DCN while the rate of packets received from the DCN at the VNIC does not exceed the threshold.

Abstract translation: 在包括物理主机和一组物理网络接口控制器（PNIC）的系统中的高分组速率网络处理的方法。 物理主机正在托管一组数据计算节点（DCN）。 每个DCN包括用于与一个或多个PNIC通信以交换分组的虚拟网络接口控制器（VNIC）。 该方法确定从特定DCN的VNIC处的特定DCN接收到的分组的速率超过预定阈值。 该方法执行轮询以确定在VNIC处从特定DCN接收的分组的可用性，而从VNIC处的DCN接收到的分组的速率超过阈值。 该方法利用中断来确定在VNIC处从特定DCN接收的分组的可用性，而从VNIC处的DCN接收到的分组的速率不超过阈值。