Alberto B Avritzer

US Patent:

7484128, Jan 27, 2009

Filed:

Dec 20, 2005

Appl. No.:

11/312973

Inventors:

Andre B. Bondi - Red Bank NJ, US
Alberto Avritzer - Mountainside NJ, US

Assignee:

Siemens Corporate Research, Inc. - Princeton NJ

International Classification:

G06F 11/00

US Classification:

714 38, 714 47

Abstract:

A computer-implemented method for triggering a software rejuvenation system or method in a computer-system including a plurality of replicates includes receiving a request for resources at a first replicate, determining an estimated response time to the request for resources, and determining that the estimated response time is greater than a first threshold. The method further includes determining that a number of estimated response times greater than the first threshold is greater than or equal to a second threshold, wherein the second threshold of the first replicate is different than a second threshold of a second replicate of the computer-system, and triggering the software rejuvenation system or method for the first replicate.

US Patent:

7657793, Feb 2, 2010

Filed:

Mar 1, 2007

Appl. No.:

11/680670

Inventors:

Alberto Avritzer - Mountainside NJ, US

Assignee:

Siemens Corporation - Iselin NJ

International Classification:

G06F 11/00

US Classification:

714 38, 714 47, 714 48

Abstract:

A computer readable medium is provided embodying instructions executable by a processor to perform a method for triggering a software rejuvenation system or method, the method includes receiving a request for resources at a node, determining an estimated response time to the request for resources, determining that the estimated response time is greater than a first threshold, and triggering the software rejuvenation system or method at the node, the triggering including broadcasting an alert upon determining one of, a number of estimated response times is greater than the first threshold is greater than or equal to a dynamic second threshold, and a prior alert is received from another node.

US Patent:

8055952, Nov 8, 2011

Filed:

Sep 14, 2005

Appl. No.:

11/225989

Inventors:

Alberto Avritzer - Mountainside NJ, US
Andre B. Bondi - Red Bank NJ, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G06F 11/00

US Classification:

714 472, 714 3812

Abstract:

A computer-implemented method for triggering a software rejuvenation system and/or method includes receiving a request for resources, determining an estimated response time to the request for resources, determining that the estimated response time is greater than a first threshold, determining that a number of estimated response times greater than the first threshold is greater than or equal to a dynamic second threshold, and triggering the software rejuvenation system and/or method.

US Patent:

8271838, Sep 18, 2012

Filed:

May 12, 2010

Appl. No.:

12/778332

Inventors:

Alberto Avritzer - Mountainside NJ, US
Rajanikanth Tanikella - Princeton NJ, US

Assignee:

Siemens Corporation - Iselin NJ

International Classification:

G06F 11/00

US Classification:

714 48, 714 33, 714 37, 714 381, 714 471, 726 22, 726 23

Abstract:

A method for detecting security intrusions and soft faults in a software system includes receiving a multi-dimensional performance signature built from operating system metrics sampled by a software system monitoring infrastructure, associating a plurality of buckets with each component of the performance signature, comparing a component of the sampled performance signature to an expected value for the performance signature component, where a bucket for the performance signature component is incremented if the sampled performance signature component exceeds the corresponding expected value, and the bucket for the performance signature component is decremented if the sampled performance signature component is less than the corresponding expected value, executing a security alert notification when the bucket for the performance signature component exceeds a first threshold, and executing a soft-fault notification when the bucket for the performance signature component exceeds a second threshold, where the first threshold is less than the second threshold.

US Patent:

8381170, Feb 19, 2013

Filed:

Nov 28, 2007

Appl. No.:

11/946127

Inventors:

Alberto Avritzer - Mountainside NJ, US
Johannes P. Ros - Bridgewater NJ, US

Assignee:

Siemens Corporation - Iselin NJ

International Classification:

G06F 9/44

US Classification:

717101, 717109, 717124

Abstract:

A method for developing a software project includes identifying business cases and goals for the software project, defining a common interface architecture through which components of the software project are to be integrated, identifying software project components to be integrated over the common interface, defining high level requirements of the project components, elaborating the component interfaces and defining detailed component requirements, implementing the project components, testing the project components individually, defining integration tests for testing integrated components, and executing the integration tests on a set of integrated components.

US Patent:

8423833, Apr 16, 2013

Filed:

Nov 19, 2010

Appl. No.:

12/949913

Inventors:

Alberto Avritzer - Mountainside NJ, US

Assignee:

Siemens Corporation - Iselin NJ

International Classification:

G06F 11/00

US Classification:

714 471, 714 25, 714 32

Abstract:

A method for monitoring the quality-of-service (QoS) of high priority transactions in a software system includes receiving a specific QoS metric of a high priority transaction, where the QoS metric associated with a plurality of buckets and comparing the sampled specific QoS metric to an expected value for the specific QoS metric. If the sampled specific QoS metric exceeds the corresponding expected value, a bucket for the specific QoS metric is incremented, otherwise the bucket is decremented. If the bucket for the specific QoS metric overflows, the current bucket is reinitialized to zero, a depth of a next bucket for the specific QoS metric is computed, and a number of standard deviations from a mean value for the specific QoS metric is incremented. When the bucket for the specific QoS metric exceeds a threshold, a software rejuvenation routine is executed.

US Patent:

20060130044, Jun 15, 2006

Filed:

Sep 14, 2005

Appl. No.:

11/225990

Inventors:

Alberto Avritzer - Mountainside NJ, US
Andre Bondi - Red Bank NJ, US

International Classification:

G06F 9/44

US Classification:

717168000

Abstract:

A computer-implemented method for triggering a software rejuvenation system and/or method includes receiving a request for resources, determining an estimated response time to the request for resources, determining that the estimated response time is greater than a first threshold, determining that a number of estimated response times greater than the first threshold is greater than or equal to a second threshold, and triggering the software rejuvenation system and/or method.

US Patent:

20060253839, Nov 9, 2006

Filed:

Mar 22, 2006

Appl. No.:

11/386971

Inventors:

Alberto Avritzer - Mountainside NJ, US
Marlon Vieira - East Windsor NJ, US

International Classification:

G06F 9/44

US Classification:

717124000

Abstract:

An automated approach to generating test cases for performance testing may be used for test case planning, early in the software development process, when a UML use case model and its activity diagram refinement are specified. The planned performance tests are executed later in the software development process, after the system is developed. The use case model is annotated with operation arrival rates and departure rates. Deterministic state testing (DST) generation and execution are applied for performance test generation and execution. In addition, a technique is described to generate the most likely test scenarios, labeling each arch in the activity diagram with transition probabilities and applying a breadth first search algorithm to select the most likely paths to be tested for each state generated by the DST algorithm.