JPH0589064A - Load dispersing system of device control part in computer system - Google Patents

Load dispersing system of device control part in computer system

Info

Publication number
JPH0589064A
JPH0589064A JP3245937A JP24593791A JPH0589064A JP H0589064 A JPH0589064 A JP H0589064A JP 3245937 A JP3245937 A JP 3245937A JP 24593791 A JP24593791 A JP 24593791A JP H0589064 A JPH0589064 A JP H0589064A
Authority
JP
Japan
Prior art keywords
device control
control unit
load
host computer
information
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.)
Withdrawn
Application number
JP3245937A
Other languages
Japanese (ja)
Inventor
Hikari Kawabata
光 川畑
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
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 filed Critical NEC Corp
Priority to JP3245937A priority Critical patent/JPH0589064A/en
Publication of JPH0589064A publication Critical patent/JPH0589064A/en
Withdrawn legal-status Critical Current

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  • Computer And Data Communications (AREA)

Abstract

PURPOSE:To decrease the dispersion of a load and to increase the use efficiency of a device by connecting respective devices to perform respectively the communication with a host computer to plural device control parts and changing the connection condition in accordance with the condition at the time point by a load control part. CONSTITUTION:A host computer 1 has the connection information with respective device control parts 4-6 and respective devices 7-11 sent from a load control part 2, and has a function to select a device control part to access in order to perform the communication with an arbitrary device. The load control part 2 monitors the communication condition between respective device control parts and respective devices to use a transmission line 3 and gives the changing instruction of a communication opponent to respective device control parts and devices in accordance with the load of respective device control parts. Respective device control parts have the device information of the communicatable device and change the device information by the connection changing instruction from the load control part 2. Respective devices have a function to change the device control information and a communication function by the connection changing instruction from the load control part 2.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ホストコンピュータと
複数の装置との間で伝送路を介してそれぞれ通信を行な
うコンピュータシステム、特に装置を制御する装置制御
部の負荷を制御する方式に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer system for performing communication between a host computer and a plurality of devices via transmission lines, and more particularly to a system for controlling the load of a device control unit for controlling the devices.

【0002】[0002]

【従来の技術】従来、この種の装置制御部の負荷制御方
式においては、予めシステム設計者が各装置の使用頻度
を予測し、一台の装置制御部で処理できるデータ量を基
に、その装制御部に接続する装置の種類および数を固定
的に決定していた。
2. Description of the Related Art Conventionally, in a load control system for a device control unit of this type, a system designer predicts the usage frequency of each device in advance, and based on the amount of data that can be processed by one device control unit, The type and number of devices connected to the packaging control unit were fixedly determined.

【0003】[0003]

【発明が解決しようとする課題】上述した従来の装置制
御部の負荷制御方式においては、予め設計者が実際の各
装置の使用頻度を予測し、一台の装置制御部に接続する
装置の種類および台数を決定していた。このため、シス
テム設計者の予測に誤りがあると、複数の装置制御部間
での負荷のバラツキが大きくなり、各装置を効率よく使
用できなくなる。
In the above-described conventional load control method for the device control unit, the designer predicts the actual usage frequency of each device in advance, and the type of device to be connected to one device control unit. And the number was decided. For this reason, if the system designer makes an error in prediction, there will be large variations in the load among the plurality of device control units, making it impossible to use each device efficiently.

【0004】また、予測どおりに各装置制御部間での負
荷の配分ができたとしても、その後各装置の使用状態が
変わり装置制御部間での負荷の配分にバラツキが生じる
と、システム設計者は再び装置制御部と装置の接続を変
更しなければならない。
Even if the load can be distributed among the device control units as predicted, if the usage state of each device changes and the load distribution among the device control units varies, the system designer Has to change the connection between the device controller and the device again.

【0005】[0005]

【課題を解決するための手段】本発明による装置制御部
の負荷分散方式においては、ホストコンピュータと複数
の装置との間で伝送路を介してそれぞれ通信を行なう。
装置制御部は、ホストコンピュータからの信号を各装置
へ中継し、各装置からの信号をホストコンピュータへ中
継し、各装置の動作を制御する。負荷管理部は、装置制
御部の負荷状態を監視し、各装置制御部と装置の接続状
態をホストコンピュータへ通知する。
In the load balancing method of the device control unit according to the present invention, communication is performed between the host computer and a plurality of devices via transmission lines.
The device control unit relays a signal from the host computer to each device, relays a signal from each device to the host computer, and controls the operation of each device. The load management unit monitors the load state of the device control unit and notifies the host computer of the connection state between each device control unit and the device.

【0006】好ましくは、負荷管理部は、伝送路を使用
した各装置制御部と各装置との間の通信状態を監視し、
各装置制御部の負荷の度合に応じて各装置制御部および
装置へ通信相手の変更指示を出す機能と、変更された各
装置制御部と各装置との接続情報をホストコンピュータ
へ通知する機能とを有する。
[0006] Preferably, the load management unit monitors a communication state between each device control unit and each device using a transmission line,
A function of issuing an instruction to change the communication partner to each device control unit and the device according to the degree of load of each device control unit, and a function of notifying the host computer of the connection information between the changed device control unit and each device. Have.

【0007】望ましくは、装置制御部は、通信可能な装
置の装置情報を持ち、伝送路を経由した負荷管理部から
の接続変更指示により装置情報を変更する機能と、装置
情報にしたがい伝送路を経由した通信可能な装置と通信
を行なう機能と、ホストコンピュータと通信を行なう機
能とを有する。
Preferably, the device control unit has device information of a communicable device, and has a function of changing the device information according to a connection change instruction from the load management unit via the transmission line, and a transmission line according to the device information. It has a function of communicating with a device that can communicate via the communication device and a function of communicating with a host computer.

【0008】[0008]

【実施例】次に、本発明の一実施例を示した図面を参照
して、より詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a more detailed description will be given with reference to the drawings showing an embodiment of the present invention.

【0009】図1を参照すると、本発明の一実施例にお
いて、負荷管理部2ならびに第一〜第三の装置制御部4
〜6は、ホストコンピュータ1に接続されるとともに、
伝送路3に接続されている。また、第一〜第五の装置7
〜11も伝送路3に接続されている。
Referring to FIG. 1, in one embodiment of the present invention, a load management unit 2 and first to third device control units 4 are provided.
Are connected to the host computer 1 and
It is connected to the transmission line 3. Also, the first to fifth devices 7
11 are also connected to the transmission line 3.

【0010】ホストコンピュータ1は、負荷管理部2か
ら送られる各装置制御部4〜6と各装置7〜11との接
続情報を持ち、任意の装置と通信を行なうためにアクセ
スする装置制御部を選択する機能を有する。
The host computer 1 has connection information of the respective device control units 4 to 6 and the respective devices 7 to 11 sent from the load management unit 2, and has a device control unit to access for communicating with an arbitrary device. Has the function of selecting.

【0011】負荷管理部2は、伝送路3を使用した各装
置制御部と各装置との間の通信状態を監視し、各装置制
御部の負荷の度合に応じて各装置制御部および装置へ通
信相手の変更指示を出す機能と、変更された各装置制御
部と各装置との接続情報をホストコンピュータ1へ通知
する機能とを有している。
The load management unit 2 monitors the communication state between each device control unit using the transmission line 3 and each device, and notifies each device control unit and the device in accordance with the degree of load of each device control unit. The host computer 1 has a function of issuing a communication partner change instruction and a function of notifying the host computer 1 of the changed connection information between each device control unit and each device.

【0012】各装置制御部は、通信可能な装置の装置情
報を持ち、伝送路3を経由した負荷管理部2からの接続
変更指示により、装置情報を変更する機能と、装置情報
にしたがい伝送路3を経由した通信可能な装置と通信を
行なう機能と、ホストコンピュータ1と通信を行なう機
能とを有している。
Each device control unit has device information of a device capable of communicating, and has a function of changing the device information according to a connection change instruction from the load management unit 2 via the transmission line 3 and a transmission line according to the device information. 3 has a function of communicating with a device capable of communicating via 3 and a function of communicating with the host computer 1.

【0013】各装置は、通信可能な装置制御部の装置制
御部情報を持ち、伝送路3を経由した負荷管理部2から
の接続変更指示により装置制御部情報を変更する機能
と、装置制御部情報にしたがい伝送路3を経由した通信
可能な装置制御部と通信を行なう機能とを有している。
Each device has device control unit information of a device control unit with which communication is possible, and a function of changing the device control unit information according to a connection change instruction from the load management unit 2 via the transmission line 3, and a device control unit. It has a function of communicating with a device control unit capable of communicating via the transmission path 3 according to the information.

【0014】いま、本実施例において、次のように仮定
する。 第一の装置制御部4は、第一,第二および第三の装置
7,8および9と通信可能である装置情報を持ってい
る。 第二の装置制御部5は、第四の装置10と通信可能で
ある装置情報を持つ。 第三の装置制御部6は、第五の装置11と通信可能で
ある装置情報を持つ。 第一〜第三の装置7〜9は、第一の装置制御部4と通
信可能である装置制御部情報を持つ。 第四の装置10は、第二の装置制御部5と通信可能で
ある装置制御部情報を持つ。 第五の装置11は、第三の装置制御部6と通信可能で
ある装置制御部情報を持つ。 ホストコンピュータ1は、第一の装置制御部4が第一
〜第三の装置7〜9に接続され、第二の装置制御部5が
第四の装置10に接続され、第三の装置制御部6が第五
の装置11に接続されているという接続情報を持ってい
る。
Now, in the present embodiment, the following assumptions are made. The first device control unit 4 has device information capable of communicating with the first, second and third devices 7, 8 and 9. The second device control unit 5 has device information capable of communicating with the fourth device 10. The third device control unit 6 has device information capable of communicating with the fifth device 11. The first to third devices 7 to 9 have device control unit information capable of communicating with the first device control unit 4. The fourth device 10 has device control unit information capable of communicating with the second device control unit 5. The fifth device 11 has device control unit information capable of communicating with the third device control unit 6. In the host computer 1, the first device control unit 4 is connected to the first to third devices 7 to 9, the second device control unit 5 is connected to the fourth device 10, and the third device control unit. 6 has connection information that it is connected to the fifth device 11.

【0015】ホストコンピュータ1が第一の装置7と通
信を行なう場合には、ホストコンピュータ1は、接続情
報により第一の装置7と接続されている第一の装置制御
部4に、第一の装置7と通信を行なう旨の通知を行な
う。第一の装置制御部4は、装置情報により、第一の装
置7へホストコンピュータ1からの通信を行なう旨の通
知を行なう。第一の装置7が通信可能であれば、以後、
ホストコンピュータ1と第一の装置7とは、第一の装置
制御部4を介して、通信を行なう。同様にして、ホスト
コンピュータ1と各装置とは、各装置制御部を介して、
通信を行なっている。
When the host computer 1 communicates with the first device 7, the host computer 1 sends the first device control unit 4 connected to the first device 7 to the first device control unit 4 connected to the first device 7 by the connection information. Notification that communication with the device 7 is to be performed. The first device control unit 4 notifies the first device 7 of the communication from the host computer 1 based on the device information. If the first device 7 can communicate, then
The host computer 1 and the first device 7 communicate with each other via the first device control unit 4. Similarly, the host computer 1 and each device, via each device control unit,
Communicating.

【0016】いま、第一の装置7とホストコンピュータ
1との間の通信の頻度が多くなり、第一の装置制御部4
の負荷が高くなり、第五の装置11とホストコンピュー
タ1との通信頻度が少なくなり、第三の装置制御部6の
負荷が低くなると、負荷管理部2は、第一の装置制御部
4に対し「第一の装置7の切り離しおよび第五の装置1
1の接続指示」を、第三の装置制御部6に対し「第五の
装置11の切り離しおよび第一の装置7の接続指示」
を、第一の装置7に対し「第一の装置制御部4の切り離
しおよび第三の装置制御部6の接続指示」を、第五の装
置11に対し「第三の装置制御部6の切り離しおよび第
一の装置制御部4の接続指示」をそれぞれ行なう。それ
とともに、ホストコンピュータ1に対し「第一の装置7
が第一の装置制御部4から第三の装置制御部6へ、第五
の装置11が第三の装置制御部6から第一の装置制御部
4へ、それぞれ接続変更された」ことを通知する。これ
に伴ない、第一の装置制御部4は、装置情報から第一の
装置7を削除し、第五の装置11を組み入れる。また、
第三の装置制御部6は、装置情報から第五の装置11を
削除し、第一の装置7を組み入れる。さらに、ホストコ
ンピュータ1は、接続情報のうち、第一の装置7を第一
の装置制御部4から第三の装置制御部6へ変更し、第五
の装置11接続を第三の装置制御部6から第一の装置制
御部4へ変更する。
Now, the frequency of communication between the first device 7 and the host computer 1 increases, and the first device control unit 4
Load increases, the frequency of communication between the fifth device 11 and the host computer 1 decreases, and the load of the third device control unit 6 decreases, the load management unit 2 causes the first device control unit 4 to operate. On the other hand, "the disconnection of the first device 7 and the fifth device 1
1 connection instruction "to the third device control unit 6" fifth device 11 disconnection and first device 7 connection instruction "
“Disconnect the first device control unit 4 and connect the third device control unit 6” to the first device 7 and “Disconnect the third device control unit 6” to the fifth device 11. And a connection instruction of the first device control unit 4 ". At the same time, the “first device 7
Is changed from the first device control unit 4 to the third device control unit 6 and the fifth device 11 is changed from the third device control unit 6 to the first device control unit 4 ”. To do. Along with this, the first device control unit 4 deletes the first device 7 from the device information and incorporates the fifth device 11. Also,
The third device control unit 6 deletes the fifth device 11 from the device information and incorporates the first device 7. Furthermore, the host computer 1 changes the first device 7 from the first device control unit 4 to the third device control unit 6 in the connection information, and changes the connection of the fifth device 11 to the third device control unit. 6 to the first device control unit 4.

【0017】以後、第一の装置7は第三の装置制御部6
を、第五の装置11は第一の装置制御部4をそれぞれ介
して、ホストコンピュータ1との通信を行なう。
After that, the first device 7 is controlled by the third device controller 6
The fifth device 11 communicates with the host computer 1 via the first device control unit 4, respectively.

【0018】[0018]

【発明の効果】以上説明したように、本発明によれば、
ホストコンピュータとそれぞれ通信を行なう各装置を複
数の装置制御部に接続し、かつ接続状態を負荷管理部に
よりその時点での状況に応じて変更できるため、複数の
装置制御部間での負荷のバラツキが軽減され、各装置を
効率よく使用できる。また、システム設計者の予測作業
を容易化できる。
As described above, according to the present invention,
Since each device that communicates with the host computer can be connected to a plurality of device control units and the connection status can be changed by the load management unit according to the situation at that time, there are variations in the load between the plurality of device control units. Is reduced and each device can be used efficiently. In addition, the prediction work of the system designer can be facilitated.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例のブロック図である。FIG. 1 is a block diagram of an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 ホストコンピュータ 2 負荷管理部 3 伝送路 4〜6 第一〜第三の装置制御部 7〜11 第一〜第五の装置 DESCRIPTION OF SYMBOLS 1 Host computer 2 Load management part 3 Transmission path 4-6 First-third device control part 7-11 First-fifth device

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ホストコンピュータと複数の装置との間
で伝送路を介してそれぞれ通信を行なうコンピュータシ
ステムにおいて、 前記ホストコンピュータからの信号を前記各装置へ中継
し、前記各装置からの信号を前記ホストコンピュータへ
中継し、前記各装置の動作を制御する複数の装置制御部
と、 前記装置制御部の負荷状態を監視し、各装置制御部と装
置の接続状態を前記ホストコンピュータへ通知する負荷
管理部とを有することを特徴とするコンピュータシステ
ムにおける装置制御部の負荷分散方式。
1. A computer system for performing communication between a host computer and a plurality of devices via transmission lines, wherein a signal from the host computer is relayed to each device, and a signal from each device is A plurality of device control units that relay operations to the host computer and control the operation of each device, and a load management that monitors the load state of the device control unit and notifies the host computer of the connection state between each device control unit and the device. And a load balancing method for a device control unit in a computer system.
【請求項2】 前記負荷管理部は、前記伝送路を使用し
た各装置制御部と各装置との間の通信状態を監視し、各
装置制御部の負荷の度合に応じて各装置制御部および装
置へ通信相手の変更指示を出す機能と、変更された各装
置制御部と各装置との接続情報を前記ホストコンピュー
タへ通知する機能とを有することを特徴とする請求項1
記載のコンピュータシステムにおける装置制御部の負荷
分散方式。
2. The load management unit monitors a communication state between each device control unit using the transmission path and each device, and the device control unit and the device control unit according to the load level of each device control unit. 2. A device having a function of issuing an instruction to change the communication partner to the device, and a function of notifying the host computer of the changed connection information between each device control unit and each device.
A load distribution method of a device control unit in the computer system described.
【請求項3】 前記装置制御部は、通信可能な装置の装
置情報を持ち、前記伝送路を経由した前記負荷管理部か
らの接続変更指示により装置情報を変更する機能と、前
記装置情報にしたがい前記伝送路を経由した通信可能な
装置と通信を行なう機能と、前記ホストコンピュータと
通信を行なう機能とを有することを特徴とする請求項1
または2記載のコンピュータシステムにおける装置制御
部の負荷分散方式。
3. The device control unit has device information of devices that can communicate, and has a function of changing the device information according to a connection change instruction from the load management unit via the transmission path, and according to the device information. 2. A device having a function of communicating with a device capable of communicating via the transmission path and a function of communicating with the host computer.
Alternatively, the load distribution method of the device control unit in the computer system according to 2.
JP3245937A 1991-09-25 1991-09-25 Load dispersing system of device control part in computer system Withdrawn JPH0589064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3245937A JPH0589064A (en) 1991-09-25 1991-09-25 Load dispersing system of device control part in computer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3245937A JPH0589064A (en) 1991-09-25 1991-09-25 Load dispersing system of device control part in computer system

Publications (1)

Publication Number Publication Date
JPH0589064A true JPH0589064A (en) 1993-04-09

Family

ID=17141078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3245937A Withdrawn JPH0589064A (en) 1991-09-25 1991-09-25 Load dispersing system of device control part in computer system

Country Status (1)

Country Link
JP (1) JPH0589064A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1027146A (en) * 1996-07-11 1998-01-27 Kyushu Nippon Denki Software Kk Communication processor and its method
US7623460B2 (en) 2006-05-19 2009-11-24 Nec Corporation Cluster system, load distribution method, optimization client program, and arbitration server program
US10632841B2 (en) 2016-06-22 2020-04-28 Kubota Corporation Drive device for PTO shaft of working machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1027146A (en) * 1996-07-11 1998-01-27 Kyushu Nippon Denki Software Kk Communication processor and its method
US7623460B2 (en) 2006-05-19 2009-11-24 Nec Corporation Cluster system, load distribution method, optimization client program, and arbitration server program
US10632841B2 (en) 2016-06-22 2020-04-28 Kubota Corporation Drive device for PTO shaft of working machine
US11472285B2 (en) 2016-06-22 2022-10-18 Kubota Corporation Drive device for PTO shaft of working machine

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