Phani Gopal Achanta

US Patent:

7444484, Oct 28, 2008

Filed:

Jun 24, 2004

Appl. No.:

10/875929

Inventors:

Phani Gopal Achanta - Austin TX, US
Robert Tod Dimpsey - Austin TX, US
Frank Eliot Levine - Austin TX, US
Robert John Urquhart - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 13/00
G06F 12/00

US Classification:

711159, 711170

Abstract:

A method and system for determining the memory utilization of a heap are provided. With the method and system, object allocations and optionally, possible memory freeing events are used to initiate a mark-and-count operation. The mark-and-count operation marks the live objects and maintains a running count of their memory bytes allocated to the live objects, referred to as a live count. The execution of the mark-and-count operation may be dependent upon various criteria including thresholds, functions of the live count, peak live counts, number of memory bytes allocated since a previous mark-and-count operation was performed, and the like. In addition to the live count, a total number of bytes allocated to objects may be maintained in order to obtain information regarding the heap memory utilization.

US Patent:

20050289315, Dec 29, 2005

Filed:

Jun 24, 2004

Appl. No.:

10/875931

Inventors:

Phani Gopal Achanta - Austin TX, US
Robert Tod Dimpsey - Austin TX, US
Frank Eliot Levine - Austin TX, US
Robert John Urquhart - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F012/00

US Classification:

711170000, 711159000

Abstract:

A method and system for determining the memory utilization of a heap are provided. With the method and system, object allocations and optionally, possible memory freeing events are used to initiate a mark-and-count operation. The mark-and-count operation marks the live objects and maintains a running count of their memory bytes allocated to the live objects, referred to as a live count. The execution of the mark-and-count operation may be dependent upon various criteria including thresholds, functions of the live count, peak live counts, number of memory bytes allocated since a previous mark-and-count operation was performed, and the like. In addition to the live count, a peak live count may be obtained and updated as new peak live counts are identified. When the peak live count is updated, additional information may be obtained via a heap dump, arcflow tree, or the like.

US Patent:

20060064564, Mar 23, 2006

Filed:

Sep 23, 2004

Appl. No.:

10/948276

Inventors:

Phani Gopal Achanta - Austin TX, US
Robert Dimpsey - Austin TX, US
Harshal Shah - Fremont CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 12/00

US Classification:

711170000

Abstract:

A method, system, and program for facilitating non-contiguous allocation of a chunked object within a Java heap without changing the manner in which a Java Virtual Manager allocates objects within the heap are provided. According to one embodiment, a chunking controller within a broker layer detects a large object, where a large object is one that the size of the allocation of the large object within a memory heap exceeds a maximum contiguous free space within the Java heap. The broker layer operates atop the Java Virtual Manager to facilitate communication and business processes between heterogeneous systems. The chunking controller describes the large object by an underlying array of the large object divided into multiple pieces of a size not exceeding the maximum contiguous free space. Then, the chunking controller enables requests through the broker layer for allocation by the Java Virtual Manager of each of the pieces of the large object within the Java heap, such that the broker layer facilitates efficient allocation of large objects in the Java heap managed by the Java Virtual Manager.

US Patent:

20060229741, Oct 12, 2006

Filed:

Apr 7, 2005

Appl. No.:

11/101612

Inventors:

Phani Achanta - Austin TX, US
Riaz Hussain - Austin TX, US
Scott Jones - Austin TX, US

International Classification:

G05B 11/01

US Classification:

700023000

Abstract:

A method and system that provides a pass through block device that is utilized to redirect all the writes bound to the system drive(s) to an overlay skin device. Reads are performed on overlay device contents and the overlay device contents take precedence over the contents of the base device. Applications of a particular theme may be installed on the overlay device. The overlay device is provided on a removable media and thus allows for creation of a set of exchangeable skins. Nested overlays are utilized to create separation of the OS data, application data, and user data. Switchable user skins enable writes into overlays and allow a user to create operating environments which can be utilized to change the use of a computer system. Since the overlays are provided on a removable media, the user only needs to substitute the overlay to switch the user's operating environment.

US Patent:

20060230339, Oct 12, 2006

Filed:

Apr 7, 2005

Appl. No.:

11/101620

Inventors:

Phani Achanta - Austin TX, US
Scott Jones - Austin TX, US

International Classification:

G06F 17/24

US Classification:

715513000, 715523000

Abstract:

A system and method for high performance pre-parsed markup language is presented. A file converter performs translation between a binary data file and a markup language file. When translating a binary data file, the file converter translates binary data header tags and binary data sizes to markup language elements and markup language data sizes, respectively, and stores them in a markup language header. The file converter then translates the binary data file's records to markup language records. When a user is finished modifying the markup language file, the file converter translates the markup language file back to a binary data file by translating the markup language header tags and markup language data sizes to binary data header tags and binary data sizes, respectively, and stores them in a binary data header. The file converter then translates the markup language file's records to binary data records.

US Patent:

20060230454, Oct 12, 2006

Filed:

Apr 7, 2005

Appl. No.:

11/101613

Inventors:

Phani Achanta - Austin TX, US
Riaz Hussain - Austin TX, US
Scott Jones - Austin TX, US

International Classification:

G06F 12/14

US Classification:

726024000

Abstract:

A method and system that enables anti-virus scanning protection of a computer system by placing all changes/updates/installations on a system-wide skin and performing the scan and clean operation on the skin before allowing the components to be merged with those of the base system. A system-wide skin is provided, which covers the entire base system of a computer. A complete scan and clean operation is first performed on the base system before a first skin is placed over the base system. Then any new applications, files, or data are installed on the skin, which overlays the entire base system, such that no updates are actually made to the base system while the system-wide skin is present. All subsequent scan and clean operations are conducted only on the system-wide skin, thus significantly reducing the time for completing such operations. Multiple skins may be provided and clean data merged from one skin to another.

US Patent:

20060253845, Nov 9, 2006

Filed:

May 3, 2005

Appl. No.:

11/121129

Inventors:

Phani Achanta - Austin TX, US
Robert Dimpsey - Kirkland WA, US
Frank Levine - Austin TX, US
Robert Urquhart - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 9/45

US Classification:

717151000

Abstract:

An improved method, apparatus, and computer instructions for identifying a memory leak in a heap. Prior to the start of the observation period, all live objects in the heap are identified to form a set of live objects by altering an indicator in the live objects. After running the system for the required amount of time or until completion of the event being monitored, the system is used to obtain the list of live objects without the altered indicator. Live objects without the altered indicators form the most likely objects associated with a memory leak.

US Patent:

20060259689, Nov 16, 2006

Filed:

May 10, 2005

Appl. No.:

11/126115

Inventors:

Phani Achanta - Austin TX, US
Riaz Hussain - Austin TX, US
Scott Jones - Austin TX, US

International Classification:

G06F 12/00

US Classification:

711115000, 711170000

Abstract:

Methods, systems, and products are provided that display memory statistics for a keydrive that do not require the keydrive to be plugged into another device. Displaying memory statistics according to embodiments of the present invention include receiving a command resulting in a change to the memory usage of the keydrive, calculating memory statistics describing the current state of memory usage of the keydrive, storing the memory statistics in memory on the keydrive, and displaying the memory statistics on a display on the keydrive. Calculating memory statistics describing the current state of memory usage of the keydrive may be carried out by calculating a total memory usage of the keydrive. Calculating memory statistics describing the current state of memory usage of the keydrive may also be carried out by calculating a percent of total memory used.