GB1163859A - Data Processing Systems - Google Patents
Data Processing SystemsInfo
- Publication number
- GB1163859A GB1163859A GB34429/68A GB3442968A GB1163859A GB 1163859 A GB1163859 A GB 1163859A GB 34429/68 A GB34429/68 A GB 34429/68A GB 3442968 A GB3442968 A GB 3442968A GB 1163859 A GB1163859 A GB 1163859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cpu
- profile
- error
- data processing
- main storage
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
- G06F11/2046—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant where the redundant components share persistent storage
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1405—Saving, restoring, recovering or retrying at machine instruction level
- G06F11/141—Saving, restoring, recovering or retrying at machine instruction level for bus or memory accesses
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
- G06F11/2023—Failover techniques
- G06F11/2028—Failover techniques eliminating a faulty processor or activating a spare
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
- G06F11/2038—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant with a single idle spare processing component
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
- G06F11/2058—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring using more than 2 mirrored copies
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2097—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements maintaining the standby controller/processing unit updated
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Hardware Redundancy (AREA)
- Debugging And Monitoring (AREA)
- Retry When Errors Occur (AREA)
Abstract
1,163,859. Data processing. INTERNATIONAL BUSINESS MACHINES CORP. 19 July, 1968, No. 34429/68. Heading G4A. In a data processing system, a recovery log unit maintains a profile of a first CPU (central processing unit) updated to a time before error is detected in the first CPU, and detection of error in the first CPU causes a second CPU to process the profile into storable form and store it in common main storage. The profile is all information necessary to permit a cleared CPU to continue its programme where it left off, including information of pending interrupts. Detection of error prevents further updating of the profile, and an error which persists despite instruction retry, or power failure, causes the second CPU to process the profile as stated above. The second CPU has its own recovery log unit and is normally concerned with its own tasks, and when required to process the profile of the other CPU as above, it temporarily stores its own working section in the main storage. The second CPU may take over the tasks of the first, using the profile of the first, in which case it processes its own profile and stores it in the main storage. The first CPU can perform for the second the services which the second is described above as performing for the first, and further CPU's can be provided. A profile can be forced into the system for diagnostic purposes.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB34429/68A GB1163859A (en) | 1968-07-19 | 1968-07-19 | Data Processing Systems |
GB35457/68A GB1168414A (en) | 1968-07-19 | 1968-07-25 | Data Processing Systems |
BE734986D BE734986A (en) | 1968-07-19 | 1969-06-23 | |
FR6921617A FR2014710A1 (en) | 1968-07-19 | 1969-06-25 | |
FR6921611A FR2014655A1 (en) | 1968-07-19 | 1969-06-25 | |
CH1062469A CH499157A (en) | 1968-07-19 | 1969-07-11 | Data processing system |
DE19691936251 DE1936251C3 (en) | 1968-07-25 | 1969-07-16 | Data processing system |
DE1966991A DE1966991C3 (en) | 1968-07-19 | 1969-07-16 | Fail-safe data processing system |
ES369639A ES369639A1 (en) | 1968-07-19 | 1969-07-17 | Data Processing Systems |
NL6911126A NL6911126A (en) | 1968-07-19 | 1969-07-18 | |
SE10196/69A SE346170B (en) | 1968-07-19 | 1969-07-18 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB34429/68A GB1163859A (en) | 1968-07-19 | 1968-07-19 | Data Processing Systems |
GB35457/68A GB1168414A (en) | 1968-07-19 | 1968-07-25 | Data Processing Systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1163859A true GB1163859A (en) | 1969-09-10 |
Family
ID=26262285
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34429/68A Expired GB1163859A (en) | 1968-07-19 | 1968-07-19 | Data Processing Systems |
GB35457/68A Expired GB1168414A (en) | 1968-07-19 | 1968-07-25 | Data Processing Systems |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35457/68A Expired GB1168414A (en) | 1968-07-19 | 1968-07-25 | Data Processing Systems |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE734986A (en) |
CH (1) | CH499157A (en) |
DE (1) | DE1966991C3 (en) |
ES (1) | ES369639A1 (en) |
FR (2) | FR2014655A1 (en) |
GB (2) | GB1163859A (en) |
NL (1) | NL6911126A (en) |
SE (1) | SE346170B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2435757A1 (en) * | 1978-09-08 | 1980-04-04 | Fujitsu Ltd | METHOD FOR PROVIDING SYNCHRONOUS OPERATION IN A MULTI-PROCESSING SYSTEM |
GB2132796A (en) * | 1982-11-25 | 1984-07-11 | Decca Ltd | Data logging system |
EP0136560A2 (en) * | 1983-09-02 | 1985-04-10 | Nec Corporation | Loosely coupled multiprocessor system capable of transferring a control signal set by the use of a common memory |
EP0221274A2 (en) * | 1985-10-29 | 1987-05-13 | International Business Machines Corporation | Method for ensuring switchover in a restartable data base system |
GB2425377A (en) * | 2005-04-19 | 2006-10-25 | Hewlett Packard Development Co | External state cache for storing processors state |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4507751A (en) * | 1982-06-21 | 1985-03-26 | International Business Machines Corporation | Method and apparatus for logging journal data using a log write ahead data set |
JPH07319738A (en) * | 1994-05-23 | 1995-12-08 | Nec Commun Syst Ltd | Differential recording system |
-
1968
- 1968-07-19 GB GB34429/68A patent/GB1163859A/en not_active Expired
- 1968-07-25 GB GB35457/68A patent/GB1168414A/en not_active Expired
-
1969
- 1969-06-23 BE BE734986D patent/BE734986A/xx unknown
- 1969-06-25 FR FR6921611A patent/FR2014655A1/fr not_active Withdrawn
- 1969-06-25 FR FR6921617A patent/FR2014710A1/fr active Pending
- 1969-07-11 CH CH1062469A patent/CH499157A/en not_active IP Right Cessation
- 1969-07-16 DE DE1966991A patent/DE1966991C3/en not_active Expired
- 1969-07-17 ES ES369639A patent/ES369639A1/en not_active Expired
- 1969-07-18 NL NL6911126A patent/NL6911126A/xx unknown
- 1969-07-18 SE SE10196/69A patent/SE346170B/xx unknown
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2435757A1 (en) * | 1978-09-08 | 1980-04-04 | Fujitsu Ltd | METHOD FOR PROVIDING SYNCHRONOUS OPERATION IN A MULTI-PROCESSING SYSTEM |
GB2132796A (en) * | 1982-11-25 | 1984-07-11 | Decca Ltd | Data logging system |
EP0136560A2 (en) * | 1983-09-02 | 1985-04-10 | Nec Corporation | Loosely coupled multiprocessor system capable of transferring a control signal set by the use of a common memory |
EP0136560A3 (en) * | 1983-09-02 | 1987-10-28 | Nec Corporation | Loosely coupled multiprocessor system capable of transferring a control signal set by the use of a common memory |
EP0221274A2 (en) * | 1985-10-29 | 1987-05-13 | International Business Machines Corporation | Method for ensuring switchover in a restartable data base system |
EP0221274A3 (en) * | 1985-10-29 | 1989-03-08 | International Business Machines Corporation | Method for ensuring switchover in a restartable data base system |
US5155678A (en) * | 1985-10-29 | 1992-10-13 | International Business Machines Corporation | Data availability in restartable data base system |
GB2425377A (en) * | 2005-04-19 | 2006-10-25 | Hewlett Packard Development Co | External state cache for storing processors state |
GB2425377B (en) * | 2005-04-19 | 2010-08-18 | Hewlett Packard Development Co | External state cache for computer processor |
US8812781B2 (en) | 2005-04-19 | 2014-08-19 | Hewlett-Packard Development Company, L.P. | External state cache for computer processor |
Also Published As
Publication number | Publication date |
---|---|
DE1936251A1 (en) | 1970-01-22 |
CH499157A (en) | 1970-11-15 |
ES369639A1 (en) | 1971-04-01 |
BE734986A (en) | 1969-12-01 |
GB1168414A (en) | 1969-10-22 |
DE1936251B2 (en) | 1975-11-20 |
DE1966991A1 (en) | 1976-02-05 |
DE1966991C3 (en) | 1979-05-31 |
FR2014655A1 (en) | 1970-04-17 |
DE1966991B2 (en) | 1978-10-05 |
FR2014710A1 (en) | 1970-04-17 |
SE346170B (en) | 1972-06-26 |
NL6911126A (en) | 1970-01-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |