Nicholas C Matsakis

US Patent:

20120072915, Mar 22, 2012

Filed:

Sep 16, 2010

Appl. No.:

12/883512

Inventors:

Steven B. Jones - Poughkeepsie NY, US
Nicholas C. Matsakis - Poughkeepsie NY, US
Daniel V. Rosa - Highland NY, US
Donald W. Schmidt - Stone Ridge NY, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G06F 9/46

US Classification:

718101

Abstract:

A queuing module is configured to determine the presence of at least one shared request in a request queue, and in the event at least one shared request is determined to be present in the queue; determine the presence of a waiting exclusive request located in the queue after the at least one shared request, and in the event a waiting exclusive request is determined to be located in the queue after the at least one shared request: determine whether grouping a new shared request with the at least one shared request violates a deferral limit of the waiting exclusive request; and, in the event grouping the new shared request with the at least one shared request does not violate the deferral limit of the waiting exclusive request, group the new shared request with the at least one shared request.

US Patent:

20130111026, May 2, 2013

Filed:

Oct 31, 2011

Appl. No.:

13/285768

Inventors:

David D. Chambliss - Morgan Hill CA, US
Joshua W. Knight - Mohegan Lake NY, US
Ronald K. Kreuzenstein - Sunnyvale CA, US
John J. Lee - Scotts Valley CA, US
Nicholas C. Matsakis - Poughkeepsie NY, US
James A. Ruddy - San Jose CA, US
John G. Thompson - Tucson AZ, US
Harry M. Yudenfriend - Poughkeepsie NY, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G06F 15/16
G06F 15/173

US Classification:

709225

Abstract:

A multi-mainframe operating system serialization method can include receiving, in a first computing system, a request to access a data set on behalf of a first peer application, sending, in the first computing system, a notification to a second peer application to obtain a normal enqueue, in response to the second peer application obtaining the normal enqueue, obtaining, in the first computing system, a first rider enqueue for the data set and sending, in the first computing system, a communication to peer instances to obtain additional rider enqueues for the data set, the additional rider enqueues corresponding to the first rider enqueue.

US Patent:

20180253245, Sep 6, 2018

Filed:

Mar 6, 2017

Appl. No.:

15/450297

Inventors:

- Armonk NY, US
Nicholas C. MATSAKIS - Poughkeepsie NY, US
Elpida TZORTZATOS - Lagrangeville NY, US

International Classification:

G06F 3/06
H04L 29/06
G06N 99/00

Abstract:

A computer system includes memory and a processor configured to manage memory allocation. Aspects include receiving a request to execute a computer program and obtaining a learned data file for the computer program, the learned data file including a history of memory allocation requests and memory access requests by the computer program. Aspects also include receiving a memory allocation request from the computer program and allocating one or more pages of a virtual memory to the computer program, wherein a size of the one or more pages is based on the learned data file. Aspects further include backing at least one of the one or more pages of the virtual memory in the real memory prior to receiving an access request for the at least one of the one or more pages based on the learned data file.

US Patent:

20180060112, Mar 1, 2018

Filed:

Nov 14, 2017

Appl. No.:

15/811717

Inventors:

- Armonk NY, US
JOSEPH W. GENTILE - NEW PALTZ NY, US
NICHOLAS R. JONES - POUGHKEEPSIE NY, US
NICHOLAS C. MATSAKIS - POUGHKEEPSIE NY, US
DAVID H. SURMAN - MARLBORO NY, US

International Classification:

G06F 9/455
G06F 9/50

Abstract:

Aspects relate to a computer system and a computer implemented method for resolving abnormal contention on the computer system. The method includes detecting, using a processor and at a hypervisor level of the computer system, abnormal contention of a serially reusable resource caused by a first virtual machine. The abnormal contention includes the first virtual machine experiencing resource starvation of computer system resources used for processing the first virtual machine, causing the first virtual machine to block the serially reusable resource from a second virtual machine that is waiting to use the serially reusable resource. The method also includes adjusting resource allocation at the hypervisor level of the computer system resources for the first virtual machine, processing the first virtual machine based on the resource allocation, and releasing the serially reusable resource by the first virtual machine in response to the first virtual machine processing.

US Patent:

20180039915, Feb 8, 2018

Filed:

Oct 30, 2017

Appl. No.:

15/796881

Inventors:

- ARMONK NY, US
JOSEPH W. GENTILE - NEW PALTZ NY, US
NICHOLAS R. JONES - POUGHKEEPSIE NY, US
NICHOLAS C. MATSAKIS - POUGHKEEPSIE NY, US
DAVID H. SURMAN - MARLBORO NY, US

International Classification:

G06N 99/00
G06F 9/50
G06F 9/54
G06F 17/30

Abstract:

Aspects relate to a computer implemented method for resolving abnormal contention on a computer system. The method includes detecting, using a processor, abnormal contention of a serially reusable resource caused by a first process, wherein the abnormal contention includes the first process blocking the serially reusable resource from a second process that is waiting to use the serially reusable resource. The method includes collecting, in a computer storage medium, resource data in a serialized resource history database and analyzing the resource data associated with the serially reusable resource and adjusting, using the processor, resource allocation for the first process of the serially reusable resource based on the resource data. The method also includes processing, using the processor and the serially reusable resource, the first process based on the resource allocation and releasing, using the processor, the serially reusable resource by the first process in response to the first process completing.

US Patent:

20170206103, Jul 20, 2017

Filed:

Jan 14, 2016

Appl. No.:

14/995264

Inventors:

- Armonk NY, US
Joseph W. Gentile - New Paltz NY, US
Nicholas R. Jones - Poughkeepsie NY, US
Nicholas C. Matsakis - Poughkeepsie NY, US
David H. Surman - Marlboro NY, US

International Classification:

G06F 9/455
G06F 9/50

Abstract:

Aspects relate to a computer system and a computer implemented method for resolving abnormal contention on the computer system. The method includes detecting, using a processor and at a hypervisor level of the computer system, abnormal contention of a serially reusable resource caused by a first virtual machine. The abnormal contention includes the first virtual machine experiencing resource starvation of computer system resources used for processing the first virtual machine, causing the first virtual machine to block the serially reusable resource from a second virtual machine that is waiting to use the serially reusable resource. The method also includes adjusting resource allocation at the hypervisor level of the computer system resources for the first virtual machine, processing the first virtual machine based on the resource allocation, and releasing the serially reusable resource by the first virtual machine in response to the first virtual machine processing.

US Patent:

20170206462, Jul 20, 2017

Filed:

Jan 14, 2016

Appl. No.:

14/995248

Inventors:

- Armonk NY, US
Joseph W. Gentile - New Paltz NY, US
Nicholas R. Jones - Poughkeepsie NY, US
Nicholas C. Matsakis - Poughkeepsie NY, US
David H. Surman - Marlboro NY, US

International Classification:

G06N 99/00
G06F 17/30
G06F 9/54
G06F 9/50

Abstract:

Aspects relate to a computer implemented method for detecting abnormal contention. The computer implemented method includes collecting resource modeling data for a serially reusable resource, wherein the resource modeling data includes one or more of request count data and contention data and storing, in a computer readable storage medium, the resource modeling data in an in-memory database. The method also includes creating and training a first model and a second model using the resource modeling data and one or more cognitive computing tasks and categorizing a contention event as an abnormal contention event using the first model and the second model.

US Patent:

20170206463, Jul 20, 2017

Filed:

Jan 14, 2016

Appl. No.:

14/995266

Inventors:

- Armonk NY, US
Joseph W. Gentile - New Paltz NY, US
Nicholas R. Jones - Poughkeepsie NY, US
Nicholas C. Matsakis - Poughkeepsie NY, US
David H. Surman - Marlboro NY, US

International Classification:

G06N 99/00
G06F 9/54
G06F 17/30
G06F 9/50

Abstract:

Aspects relate to a computer implemented method for resolving abnormal contention on a computer system. The method includes detecting, using a processor, abnormal contention of a serially reusable resource caused by a first process, wherein the abnormal contention includes the first process blocking the serially reusable resource from a second process that is waiting to use the serially reusable resource. The method includes collecting, in a computer storage medium, resource data in a serialized resource history database and analyzing the resource data associated with the serially reusable resource and adjusting, using the processor, resource allocation for the first process of the serially reusable resource based on the resource data. The method also includes processing, using the processor and the serially reusable resource, the first process based on the resource allocation and releasing, using the processor, the serially reusable resource by the first process in response to the first process completing.