International Business Machines Corporation

Maroun Touma

Dinesh C Verma

Seraphin Bernard Calo

Erich Miles Nahum

Douglas Morgan Freimuth

Franck Vinh Le

William Cornejo

Thai Franck Le

Christian Makaya

Ho Yin Starsky Wong

Jenny S Li

Chung-Sheng Li

Dakshi Agrawal

Vasileios Pappas

Juhnyoung Lee

Hui Lei

Rakesh Mohan

Pietro Mazzoleni

Dilip Dinkar Kandlur

Keith William Grueneberg

Mitchell Adam Cohen

Fenno F Heath, Iii

Thai V Le

Josef Schiefer

Jakka Sairamesh

Stephen V Stibler

Nitinchandra R Nayak

Robert Bruce Nicholson

Kang-Won Lee

Charles Philippe Tresser

Wlodek Wlodzimierz Zadrozny

Bong Jun Ko

Bruce Oliver Anthony, Jr

Kugamoorthy Gajananan

Nandakishore Kambhatla

Jorge J Ortiz

Sekou Lionel Remy

Catherine Gody Wolf

Carolyn A Brodie

Franck Le Thai

Joel Wolf, Legal Representative

Thai V (Franck) Le

Franck T Le

A computer-implemented method, in accordance with one aspect of the present invention, includes analyzing timing data for stages in a pipeline running in an edge system for detecting starvation of one or more of the stages in the pipeline. In response to detecting one or more of the stages being starved, starvation avoidance is performed for mitigating the starvation of the starving stage(s). A computer-implemented method, in accordance with another aspect of the present invention, includes analyzing timing data for pipelines running in parallel in an edge system for detecting starvation of one or more of the pipelines. In response to detecting one or more of the pipelines being starved, starvation avoidance is performed for mitigating the starvation of the starving pipeline(s).

Prevention of resource starvation across stages and/or pipelines in computer environments

A computing system for learning a device type and message formats used by a device is provided. The computing system includes an interface and a processor. The interface is receptive of documents describing identification information and communication and application protocols of devices. The processor is coupled with the interface to obtain rules of network packet analysis using document analytics and identify identification information and communication and application protocols of network messages from devices using the rules.

Automatic protocol discovery using text analytics

A method is provided of using a set of servers to provide deferential services that have a pre-negotiated time for notice to release the servers. The method includes defining a virtual checkpoint frame interval that is constrained to a duration of up to half of the pre-negotiated time for notice to release the servers. The method includes, responsive to an end of the interval, (i) writing, to a shared state database, a state of processing of the packets and transactions occurring during the interval that are processed by a current one of the servers, and (ii) releasing the packets and transactions occurring during the interval. The method includes copying the packets and transactions occurring during the interval, and the state, from the current server to another server for subsequent processing, responsive to an indication of an instance loss on the current server.

Synchronized release of resources used in deferential cloud services

A method includes configuring worker services to operate in a stateless manner and providing support services that enable the worker services to operate in the stateless manner. The support services include (i) a management service for providing notifications of server removal and addition, (ii) a state maintenance service for maintaining state information in a central location, and (iii) a load balancer service for distributing requests among worker services. The method includes altering a number of servers allocated to at least one worker service, responsive to a notification from the management service. A private protocol is used between the worker services and load balancer service (a) to send, from the worker services to the load balancer service, a respective pointer to the state information associated with the requests, and (b) to include the respective pointer in the requests when any of the requests are forwarded to any worker service.

Deferential support of request driven cloud services

A method is provided of using a set of servers to provide deferential services that have a pre-negotiated time for notice to release the servers. The method includes defining a virtual checkpoint frame interval that is constrained to a duration of up to half of the pre-negotiated time for notice to release the servers. The method includes collecting packets and transactions occurring during the interval that are processed by a current server. The method includes, responsive to an end of the interval, (i) writing, to a shared state database, a state of processing of the packets and transactions occurring during the interval, and (ii) releasing the packets and transactions occurring during the interval. The method includes copying the packets and transactions occurring during the interval, and the state, from the current server to another server for subsequent processing, responsive to an indication of an instance loss on the current server.

A network function modification method, system, and computer program product, include terminating the connection-oriented session between a client and a server via at least two proxies, running a multipath connection-oriented session between the at least two proxies, if an insertion request is received, establishing a first multipath subflow with the new multipath subflow traversing the network function of the insertion request, and if a removal request is received, establishing a second multipath subflow with the new multipath subflow not traversing the network function of the removal request.

System, method and computer program product for network function modification

Systems, methods, and computer program products are disclosed for dynamically determining an optimal node of an overlay network for client attachment. An optimal node can be selected from a group of potential attachment nodes in the overlay network through which a client can establish a connection to the overlay network. Network parameter training data can be determined and used to train a network optimization model. Once trained, the network optimization model can be used to determine&#x2014;based on network parameter data associated with the group of potential attachment nodes&#x2014;the optimal node for the client to attach to. If a different node than a current attachment node is determined to be a new optimal node, a connection path can be established between this new optimal node and the client, and an existing connection path between the client and the previous optimal node can be terminated or simultaneously maintained.

Client attachment to an overlay network

A method includes positioning a proxy between a client and a server; the proxy receiving the client's Transmission Control Protocol (TCP) communications intended for establishing a communication connection to the server; the proxy initiating a TCP communication with the server after receiving the client's TCP; and the proxy determining a TCP congestion control algorithm based upon identifying information of the received client's TCP and on properties of the sever to provide optimum communications as a communication proxy between the client and the server.

Dynamic selection of TCP congestion control for improved performances

A middlebox includes a network monitor module configured to determine a quality-affective factor in a connection between a client and a server in a network. A processor is configured to compare the quality-affective factor to a threshold to determine whether the connection would benefit from a network processing function. A network control module is configured to configure a router to exclude the middlebox from the connection if the connection would not benefit from the network processing function and if the middlebox is already present in the connection to cease operation of the middlebox on the connection. Router configuration is delayed until the connection is idle.

Dynamic middlebox redirection based on client characteristics

Methods and apparatus are provided for wireless network optimization. Wireless network traffic is optimized by receiving redirected traffic based on one or more configuration rules; and applying the redirected traffic to a protocol optimizer that optimizes the wireless network traffic based on one or more optimization rules. A management interface is optionally provided to manage the network optimization appliance. A process monitor is optionally provided to monitor one or more process threads to determine if the process threads have stalled. The process monitor can monitor other components and can be monitored by at least one other component.

Wireless network optimization appliance

Traffic redirection methods include determining a quality-affective factor comprising a quality-affective factor in an existing connection between a client and a server in a network. The quality-affective factor is compared to a threshold to determine whether the connection would benefit from a network processing function. A router is reconfigured to exclude the middlebox from the connection, if the connection would not benefit from the network processing function and if the middlebox is already present in the connection, to cease operation of the middlebox on the connection. The router reconfiguration is delayed until the connection is idle.

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Redding, CT, United States of America

Maroun Touma