JPH033056A - Channel controller - Google Patents

Channel controller

Info

Publication number
JPH033056A
JPH033056A JP13787689A JP13787689A JPH033056A JP H033056 A JPH033056 A JP H033056A JP 13787689 A JP13787689 A JP 13787689A JP 13787689 A JP13787689 A JP 13787689A JP H033056 A JPH033056 A JP H033056A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
storage device
queue
1st
stored
request
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
Application number
JP13787689A
Inventor
Hiroyuki Egawa
Hiroyuki Tsunemoto
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

Links

Abstract

PURPOSE: To efficiently balance an I/O request from a CPU and an interruption request from a channel equipment by executing a processing request stored in a 1st queue storage device with priority only when the number of queues stored in a queue length storage device is larger than previously determined limit queue length.
CONSTITUTION: The channel controller is provided with the 1st queue storage device 8 for queuing plural processing requests from channel equipments 60 to 63, the 2nd queue storage device 10 for queuing an I/O processing request from a master device 1, a queue length storage device 100 for storing the number of processing requests from the 1st queue storage device, and an I/O processor 9. Only when the number of queues stored in the device 100 is larger than the previously determined limit queue length, the I/O processor 9 executes the processing requests stored in the 1st queue storage device 8 with priority. Consequently, the processing requests from the master device can be efficiently balanced with that of the channel equipments.
COPYRIGHT: (C)1991,JPO&Japio
JP13787689A 1989-05-31 1989-05-31 Channel controller Pending JPH033056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13787689A JPH033056A (en) 1989-05-31 1989-05-31 Channel controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13787689A JPH033056A (en) 1989-05-31 1989-05-31 Channel controller

Publications (1)

Publication Number Publication Date
JPH033056A true true JPH033056A (en) 1991-01-09

Family

ID=15208762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13787689A Pending JPH033056A (en) 1989-05-31 1989-05-31 Channel controller

Country Status (1)

Country Link
JP (1) JPH033056A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5008794A (en) * 1989-12-21 1991-04-16 Power Integrations, Inc. Regulated flyback converter with spike suppressing coupled inductors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5008794A (en) * 1989-12-21 1991-04-16 Power Integrations, Inc. Regulated flyback converter with spike suppressing coupled inductors

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