JPS6412351A - Virtual storage control system - Google Patents
Virtual storage control systemInfo
- Publication number
- JPS6412351A JPS6412351A JP62168439A JP16843987A JPS6412351A JP S6412351 A JPS6412351 A JP S6412351A JP 62168439 A JP62168439 A JP 62168439A JP 16843987 A JP16843987 A JP 16843987A JP S6412351 A JPS6412351 A JP S6412351A
- Authority
- JP
- Japan
- Prior art keywords
- page
- bits
- value
- array
- operating system
- 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.)
- Pending
Links
Landscapes
- Memory System Of A Hierarchy Structure (AREA)
Abstract
PURPOSE:To prevent the overhead of an operating system from being increased, by providing a reference counter of (n) bits which holds the number of times of page reference at every prescribed period in a unit of page instead of the reference bit of a main storage key. CONSTITUTION:An RC array 102 of (n) bits is counted up at an adder circuit 105 at every reference of the said page. When all bits are set at (1)s, no count-up is performed. And the operating system issues an instruction (RRC instruction) to read out the value of an RC (reference counter) within the prescribed period, and reads out the value of the said page of the RC array 102, and updates a nonreference time interval counter according to a count value, and rearranges the queue of the page targeted to be paged out. At this time, the said RC is reset.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62168439A JPS6412351A (en) | 1987-07-06 | 1987-07-06 | Virtual storage control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62168439A JPS6412351A (en) | 1987-07-06 | 1987-07-06 | Virtual storage control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6412351A true JPS6412351A (en) | 1989-01-17 |
Family
ID=15868138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62168439A Pending JPS6412351A (en) | 1987-07-06 | 1987-07-06 | Virtual storage control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6412351A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0617077U (en) * | 1992-08-11 | 1994-03-04 | 三菱電機株式会社 | Switchgear |
US8320568B2 (en) | 2008-06-23 | 2012-11-27 | Huawei Technologies Co., Ltd. | Method, apparatus and system for key derivation |
-
1987
- 1987-07-06 JP JP62168439A patent/JPS6412351A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0617077U (en) * | 1992-08-11 | 1994-03-04 | 三菱電機株式会社 | Switchgear |
US8320568B2 (en) | 2008-06-23 | 2012-11-27 | Huawei Technologies Co., Ltd. | Method, apparatus and system for key derivation |
US10334492B2 (en) | 2008-06-23 | 2019-06-25 | Huawei Technologies Co., Ltd. | Method, apparatus and system for key derivation |
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