Benjamin C Walker

US Patent:

20230076365, Mar 9, 2023

Filed:

Nov 15, 2022

Appl. No.:

17/987553

Inventors:

- Santa Clara CA, US
Benjamin WALKER - Chandler AZ, US
Mateusz Kozlowski - Gdansk, PL
Kapil KARKRA - Chandler AZ, US
Artur Paszkiewicz - Gdansk, PL

International Classification:

G06F 3/06
G06F 12/1009

Abstract:

A method is described. The method includes constructing a bitmap having a first dimension organized into bins of logical block addresses (LBA bins) and a second dimension organized into bins of physical block addresses (PBA bins). Coordinates of the bitmap indicate whether respective physical blocks of non volatile memory within one or more SSDs that fall within a particular PBA bin are being mapped to by an LBA that falls within a particular one of the LBA bins. The method includes using the bitmap during a rebuild of an LBA bin of an LBA/PBA table to avoid reading meta data for physical blocks that are not mapped to by an LBA that falls within the LBA bin.

US Patent:

20200241927, Jul 30, 2020

Filed:

Apr 15, 2020

Appl. No.:

16/849915

Inventors:

- Santa Clara CA, US
James R. HARRIS - Chandler AZ, US
Kiran PATIL - Portland OR, US
Benjamin WALKER - Chandler AZ, US
Sudheer MOGILAPPAGARI - Hillsboro OR, US
Yadong LI - Portland OR, US
Mark WUNDERLICH - Lake Oswego OR, US
Anil VASUDEVAN - Portland OR, US

International Classification:

G06F 9/50
G06F 9/54
G06F 9/46
G06F 13/22
H04L 29/08

Abstract:

Examples described herein relate to at least one processor that can execute a polling group to poll for storage transactions associated with a first group of one or more particular queue identifiers, wherein the one or more particular queue identifiers are associated with one or more queues that can be accessed using the polling group and no other polling group. In some examples, the polling group is to execute on a processor that runs no other polling group. In some examples, the at least one processor is configured to: execute a second polling group on a second processor, wherein the second polling group is to poll for storage transactions for a second group of one or more particular queue identifiers that are different than the one or more particular queue identifiers of the first group, wherein the second group of one or more particular queue identifiers are associated with one or more queues that can be accessed using the second polling group and not the first polling group.

US Patent:

20200218676, Jul 9, 2020

Filed:

Mar 20, 2020

Appl. No.:

16/825538

Inventors:

- Santa Clara CA, US
James R. HARRIS - Chandler AZ, US
Ziye YANG - Shanghai, CN
Vishal VERMA - Chandler AZ, US
Changpeng LIU - Shanghai, CN
Chong HAN - Shanghai, CN
Benjamin WALKER - Chandler AZ, US

International Classification:

G06F 13/16
G06F 9/50

Abstract:

Examples herein relate to polling for input/output transactions of a network interface or a storage device, or any peripheral device. Some examples monitor clock cycles spent checking for a presence of input/output (I/O) events and processing I/O events and monitor clock cycles spent checking for presence of I/O events without completing an I/O event. Central processing unit (CPU) core utilization can be based on clock cycles spent checking for a presence of I/O events and processing I/O events and clock cycles spent checking for presence of I/O events without completion of an I/O event. For example, if core utilization is below a threshold, frequency of the core can be reduced for performing polling of I/O events. If core utilization is at or above the threshold, frequency of the core can be increased used to performing polling of I/O events.

US Patent:

20190205052, Jul 4, 2019

Filed:

Mar 7, 2019

Appl. No.:

16/295652

Inventors:

- Santa Clara CA, US
Benjamin Walker - Chandler AZ, US
Tomasz Zawadzki - Gdansk, PL

International Classification:

G06F 3/06
G06F 12/10

Abstract:

Embodiments of the present disclosure relate to an electronic apparatus that includes a metadata generator, to generate an extents table (ET) that lists one or more extents pages (EPs), where an EP is a fixed size, and where the one or more EPs store one or more extents. An extent includes an allocation indication for a cluster in a memory device, where a number of the extents corresponds to a number of clusters of the memory device, where a subset number of the extents is stored in one of the one or more EPs, and where the subset number is based on the fixed size of the EP. The electronic apparatus further includes a metadata updater, to modify the allocation indication in the extent stored in the one of the one or more EPs, based on a corresponding change in an allocation of the cluster in the memory device.