US 11,442,654 B2Granted

Managing and ranking memory resources

AssigneeMicrosoft Technology Licensing, LLC

InventorsLisa Ru-Feng Hsu, Aninda Manocha, Ishwar Agarwal, Daniel Sebastian Berger, Stanko Novakovic, Janaina Barreiro Gambaro Bueno, Vishal Soni

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Abstract

The present disclosure relates to systems, methods, and computer-readable media for tracking memory usage data on a memory controller system and providing a mechanism whereby one or multiple accessing agents (e.g., computing nodes, applications, virtual machines) can access memory usage data for a memory resource managed by a memory controller. Indeed, the systems described herein facilitate generation of and access to heatmaps having memory usage data thereon. The systems described herein describe features and functionality related to generating and maintaining the heatmaps as well as providing access to the heatmaps to a variety of accessing agents. This memory tracking and accessing is performed using low processing overhead while providing useful information to accessing agents in connection with memory resources managed by a memory controller.

Claims18

Dependent claims

A method, comprising:

managing, by a memory controller, access to a memory resource for one or more accessing agents by associating the one or more accessing agents with corresponding memory segments from a collection of memory segments on the memory resource;
tracking, by the memory controller, access instances to the collection of memory segments by the one or more accessing agents;
maintaining, by the memory controller, one or more heatmaps for the one or more accessing agents, the one or more heatmaps including segment entries having access metrics associated with the one or more accessing agents, the access metrics comprising, for each segment entry from the one or more heatmaps:
a frequency metric for an associated memory segment, the frequency metric indicating a count of access instances for the associated memory segment since a last time that the segment entry was accessed;
and
a recency metric for the associated memory segment, the recency metric indicating a recency of when the segment entry was last accessed;
and
providing, by the memory controller, access to the one or more heatmaps to the one or more accessing agents.

5 more elements

A memory system, comprising:

a memory resource, the memory resource including a collection of memory segments accessible to one or more accessing agents;
and
a memory controller being configured to;
manage access to the memory resource for the one or more accessing agents by associating the one or more accessing agents with a corresponding set of memory segments from the collection of memory segments on the memory resource;
track access instances to the collection of memory segments by the one or more accessing agents;
maintain one or more heatmaps for the one or more accessing agents, the one or more heatmaps including segment entries having access metrics associated with the one or more accessing agents, the access metrics comprising, for each segment entry from the one or more heatmaps:
a frequency metric for an associated memory segment, the frequency metric indicating a count of access instances for the associated memory segment since a last time that the segment entry was accessed;
and
a recency metric for the associated memory segment, the recency metric indicating a recency of when the segment entry was last accessed;
and
provide access to the one or more heatmaps to the one or more accessing agents.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/071,344Filed 15 Oct 2020
Published: US 2022/0121386 A121 Apr 2022
Granted: 13 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 3/0653
Making use of a particular technique: monitoring storage devices or systems
G06F 12/0284
User address space allocation, e.g. contiguous or non contiguous base addressing: multiple user address space allocation, e.g. using different…
G06F 3/0608
Specifically adapted to achieve a particular effect: saving storage space on storage systems
G06F 3/0673
In-line storage system: single storage device

Family

US 2022/0121386 A1Pre-grant publication · published 21 Apr 2022
US 11,442,654 B2This patent

From the US filing history. Foreign family members aren’t listed.

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