JPS57155648A - Diagnosing system of stand-by group information processor - Google Patents

Diagnosing system of stand-by group information processor

Info

Publication number
JPS57155648A
JPS57155648A JP56041355A JP4135581A JPS57155648A JP S57155648 A JPS57155648 A JP S57155648A JP 56041355 A JP56041355 A JP 56041355A JP 4135581 A JP4135581 A JP 4135581A JP S57155648 A JPS57155648 A JP S57155648A
Authority
JP
Japan
Prior art keywords
information
time
stand
processor
diagnosing
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
JP56041355A
Other languages
Japanese (ja)
Other versions
JPS6246020B2 (en
Inventor
Morihiko Mizukami
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56041355A priority Critical patent/JPS57155648A/en
Publication of JPS57155648A publication Critical patent/JPS57155648A/en
Publication of JPS6246020B2 publication Critical patent/JPS6246020B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Hardware Redundancy (AREA)
  • Debugging And Monitoring (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To reduce the communication load between the information processors, by adding the time to the diagnosing information which is transmitted from a using information processor to a stand-by information processor. CONSTITUTION:A using information processor 1' transmits the diagnosing information ENQ' containing the time T1 delivered from a timing function 8 to a diagnosing information receiving part 51' of a stand-by information processor 2' from a diagnosing information transmitting part 41' via a mutual communication function 3. The part 51' performs a process based on the information ENQ' and transmits the time T1 to a time compensating part 53. The part 53 compensates the time T2 of a timing function 9 so as to make it synchronous with the time T1 and then sends the diagnosis answer information ACK' added with the error value DELTAT between T2 and T1 back to the processor 1'. The processor 1' receives the information ACK' at a receiving part 43' and delivers a stand-by normal signal A through a gate 45 if the information ACK' reaches within the prescribed time and at the same time the value DELTAT is within the reference error value at an error time inspecting part 44. In case when the information ACK' does not arrive although the prescribed time elapses or the value DELTAT exceeds the reference level, a stand-by fault signal N is delivered through a gate 46.
JP56041355A 1981-03-20 1981-03-20 Diagnosing system of stand-by group information processor Granted JPS57155648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56041355A JPS57155648A (en) 1981-03-20 1981-03-20 Diagnosing system of stand-by group information processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56041355A JPS57155648A (en) 1981-03-20 1981-03-20 Diagnosing system of stand-by group information processor

Publications (2)

Publication Number Publication Date
JPS57155648A true JPS57155648A (en) 1982-09-25
JPS6246020B2 JPS6246020B2 (en) 1987-09-30

Family

ID=12606182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56041355A Granted JPS57155648A (en) 1981-03-20 1981-03-20 Diagnosing system of stand-by group information processor

Country Status (1)

Country Link
JP (1) JPS57155648A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174839A (en) * 1986-01-28 1987-07-31 Nec Corp Recognition system for normalcy of subsystem in duplex system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01145215U (en) * 1988-03-29 1989-10-05
JP5488634B2 (en) 2012-03-29 2014-05-14 日本電気株式会社 Information processing apparatus, management controller, system time synchronization method, and program

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51830A (en) * 1974-06-21 1976-01-07 Hitachi Ltd
JPS5552169A (en) * 1978-10-11 1980-04-16 Nec Corp Multiplex processor system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51830A (en) * 1974-06-21 1976-01-07 Hitachi Ltd
JPS5552169A (en) * 1978-10-11 1980-04-16 Nec Corp Multiplex processor system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174839A (en) * 1986-01-28 1987-07-31 Nec Corp Recognition system for normalcy of subsystem in duplex system

Also Published As

Publication number Publication date
JPS6246020B2 (en) 1987-09-30

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