WO2009114554A3 - Efficient, scalable and high performance mechanism for handling io requests - Google Patents

Efficient, scalable and high performance mechanism for handling io requests Download PDF

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Publication number
WO2009114554A3
WO2009114554A3 PCT/US2009/036698 US2009036698W WO2009114554A3 WO 2009114554 A3 WO2009114554 A3 WO 2009114554A3 US 2009036698 W US2009036698 W US 2009036698W WO 2009114554 A3 WO2009114554 A3 WO 2009114554A3
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WO
WIPO (PCT)
Prior art keywords
requests
transaction table
handling
scalable
efficient
Prior art date
Application number
PCT/US2009/036698
Other languages
French (fr)
Other versions
WO2009114554A2 (en
Inventor
William Lee
Thomas Benjamin Berg
Original Assignee
Mips Technologies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mips Technologies, Inc. filed Critical Mips Technologies, Inc.
Publication of WO2009114554A2 publication Critical patent/WO2009114554A2/en
Publication of WO2009114554A3 publication Critical patent/WO2009114554A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
    • G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
    • G06F9/5038—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals considering the execution order of a plurality of tasks, e.g. taking priority or time dependency constraints into consideration
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0806—Multiuser, multiprocessor or multiprocessing cache systems
    • G06F12/0815—Cache consistency protocols

Abstract

A system, apparatus and method for managing input/output requests in a multi-processor system is disclosed. An IO coherence unit includes an IO request handler, a variable size transaction table, and an IO response handler. The size of the transaction table varies according to the number of pending IO requests. The IO request handler stores information about pending IO requests in the transaction table to establish an order among related requests and to permit out-of-order handling of unrelated requests. The IO response handler tracks responses to the IO requests and updates the information in the transaction table. The IO coherence unit returns responses to requesting devices in compliance with device ordering requirements.
PCT/US2009/036698 2008-03-12 2009-03-10 Efficient, scalable and high performance mechanism for handling io requests WO2009114554A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/047,257 2008-03-12
US12/047,257 US8001283B2 (en) 2008-03-12 2008-03-12 Efficient, scalable and high performance mechanism for handling IO requests

Publications (2)

Publication Number Publication Date
WO2009114554A2 WO2009114554A2 (en) 2009-09-17
WO2009114554A3 true WO2009114554A3 (en) 2010-01-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/036698 WO2009114554A2 (en) 2008-03-12 2009-03-10 Efficient, scalable and high performance mechanism for handling io requests

Country Status (2)

Country Link
US (1) US8001283B2 (en)
WO (1) WO2009114554A2 (en)

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US20090234987A1 (en) 2009-09-17
US8001283B2 (en) 2011-08-16
WO2009114554A2 (en) 2009-09-17

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