JPS5786181A - Second buffer storage device - Google Patents

Second buffer storage device

Info

Publication number
JPS5786181A
JPS5786181A JP55162158A JP16215880A JPS5786181A JP S5786181 A JPS5786181 A JP S5786181A JP 55162158 A JP55162158 A JP 55162158A JP 16215880 A JP16215880 A JP 16215880A JP S5786181 A JPS5786181 A JP S5786181A
Authority
JP
Japan
Prior art keywords
read
main storage
request
storage area
copy
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP55162158A
Other languages
Japanese (ja)
Other versions
JPS618456B2 (en
Inventor
Koichi Tsukizoe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55162158A priority Critical patent/JPS5786181A/en
Publication of JPS5786181A publication Critical patent/JPS5786181A/en
Publication of JPS618456B2 publication Critical patent/JPS618456B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G06F12/0844—Multiple simultaneous or quasi-simultaneous cache accessing
    • G06F12/0855—Overlapped cache accessing, e.g. pipeline
    • G06F12/0859—Overlapped cache accessing, e.g. pipeline with reload from main memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

PURPOSE:To shorten data processing time extremely by dividing a request to read block data and giving priority to the 1st request to read when a copy of a desired main storage area is not present in a data buffer. CONSTITUTION:When a copy of a desired main storage area is not present in the data buffer 7 of the 2nd buffer storage device constituting some part of a storage hierachy system, a request to read block data of (n) by N bytes including the main storage area is divided by (n), and sent to a main storage device 1 continuously by N bytes for every time. Then, when new main storage access is requested during the generation of the (n) successive requests to read and a copy of a desired main storage area is not present in its own data buffer 7, only the at least 1st request to read among new (n) requests to read is given priority to the former (n) successive requests to read.
JP55162158A 1980-11-18 1980-11-18 Second buffer storage device Granted JPS5786181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55162158A JPS5786181A (en) 1980-11-18 1980-11-18 Second buffer storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55162158A JPS5786181A (en) 1980-11-18 1980-11-18 Second buffer storage device

Publications (2)

Publication Number Publication Date
JPS5786181A true JPS5786181A (en) 1982-05-29
JPS618456B2 JPS618456B2 (en) 1986-03-14

Family

ID=15749128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55162158A Granted JPS5786181A (en) 1980-11-18 1980-11-18 Second buffer storage device

Country Status (1)

Country Link
JP (1) JPS5786181A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3518048A1 (en) 2018-01-24 2019-07-31 Ricoh Company, Ltd. Intermediate transfer medium and image forming apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0632829Y2 (en) * 1988-08-29 1994-08-31 株式会社丸山製作所 Air stirring type power spreader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3518048A1 (en) 2018-01-24 2019-07-31 Ricoh Company, Ltd. Intermediate transfer medium and image forming apparatus

Also Published As

Publication number Publication date
JPS618456B2 (en) 1986-03-14

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