公开(公告)号：US20180060238A1

公开(公告)日：2018-03-01

申请号：US15244590

申请日：2016-08-23

Applicant: Apple Inc.

Inventor： Robert P. Esser ,  Nikolay N. Stoimenov

IPC: G06F12/0846 ,  G06F12/128 ,  G06F12/0808

CPC classification number: G06F12/0848 ,  G06F12/0808 ,  G06F12/12 ,  G06F2212/1028 ,  G06F2212/282 ,  G06F2212/601 ,  Y02D10/13

Abstract: Systems, methods, and computer readable media to improve the operation of electronic devices that use integrated cache systems are described. In general, techniques are disclosed to manage the leakage power attributable to an integrated cache memory by dynamically resizing the cache during device operations. More particularly, run-time cache operating parameters may be used to dynamically determine if the cache may be resized. If effective use of the cache may be maintained using a smaller cache, a portion of the cache may be power-gated (e.g., turned off). The power loss attributable to that portion of the cache power-gated may thereby be avoided. Such power reduction may extend a mobile device's battery runtime. Cache portions previously turned off may be brought back online as processing needs increase so that device performance does not degrade.

公开(公告)号：US10552327B2

公开(公告)日：2020-02-04

申请号：US15244590

申请日：2016-08-23

Applicant: Apple Inc.

Inventor： Robert P. Esser ,  Nikolay N. Stoimenov

IPC: G06F12/0846 ,  G06F12/0808

Abstract: Systems, methods, and computer readable media to improve the operation of electronic devices that use integrated cache systems are described. In general, techniques are disclosed to manage the leakage power attributable to an integrated cache memory by dynamically resizing the cache during device operations. More particularly, run-time cache operating parameters may be used to dynamically determine if the cache may be resized. If effective use of the cache may be maintained using a smaller cache, a portion of the cache may be power-gated (e.g., turned off). The power loss attributable to that portion of the cache power-gated may thereby be avoided. Such power reduction may extend a mobile device's battery runtime. Cache portions previously turned off may be brought back online as processing needs increase so that device performance does not degrade.