Invention Grant
US09229885B2 Adaptive scheduling queue control for memory controllers based upon page hit distance determinations
有权
基于页面命中距离确定的内存控制器的自适应调度队列控制
- Patent Title: Adaptive scheduling queue control for memory controllers based upon page hit distance determinations
- Patent Title (中): 基于页面命中距离确定的内存控制器的自适应调度队列控制
-
Application No.: US14283780Application Date: 2014-05-21
-
Publication No.: US09229885B2Publication Date: 2016-01-05
- Inventor: Arup Chakraborty , Jaksa Djordjevic
- Applicant: Arup Chakraborty , Jaksa Djordjevic
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agency: Egan, Peterman, & Enders LLP.
- Main IPC: G06F12/02
- IPC: G06F12/02 ; G06F13/16 ; G11C7/10

Abstract:
Methods and systems are disclosed for adaptive scheduling queue control based upon page hit distance determinations. A threshold occupancy value is determined for a window of previous access requests to a memory and used to adaptively control a number of access requests stored in a scheduling queue buffer. For certain embodiments, a page hit distance (PHD) determination for each access request and historical page hit distance data is used to adjust the threshold occupancy value that determines the number (N) of access requests stored in the buffer prior to removing an access request and using it to access the memory. For each access request, the page hit distance represents the number of previously received access requests since the last access request to access the same page of memory. An average PHD can be determined over a number (M) of previous access requests and used to control the threshold occupancy value.
Public/Granted literature
- US20150339245A1 Adaptive Scheduling Queue Control For Memory Controllers Based Upon Page Hit Distance Determinations Public/Granted day:2015-11-26
Information query