Patent · US Active

Defragmentation of persistent main memory

US10168911B1 · kind B1 · utility

0Cited by

5References

20Claims

0Family size

Assignee

SAP SE · DE

Inventors

Ismail Oukid · Berlin, DE
Ivan Schreter · Malsch, DE
Daniel Booss · Angelbachtal, DE

Key dates

Filing date	Jun 13, 2017
Grant date	Jan 1, 2019
Priority date	—
Expiry date	Jul 1, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F2206/1004
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Disclosed herein are system, method, and computer program product embodiments for defragmentation of persistent main memory (e.g., storage class memory). An embodiment operates by determining that a request to allocate a block of persistent main memory cannot be fulfilled, identifying the largest block of a plurality of free blocks associated with a persistent allocator, and punching a hole at the location of the block within a segment of the persistent main memory. The embodiment further operates by determining that at least one neighboring block of the largest block is also a hole, and coalescing the at least one neighboring block and the largest block.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.