JPH03208149A - Computer system - Google Patents

Abstract

PURPOSE:To improve the efficiency of communication by setting polling intervals for respective communication lines in such a way that polling cycles under the control of all the communication lines become equal. CONSTITUTION:The communication processing system constitution control transfer means 12 of a host computer 1 samples constitution information of a system from a system constitution information file 6 and transmits them to a network service control part 11, a host communication control part 31 and an initial constitution control information storage means 32. The means 32 stores constitution information in a table 36. Then, a polling interval (PI) calculation means 33 obtains the number of subordinate terminals 4 under the control of respective communication lines 5 from constitution information, and calculates PI. A polling transmission instruction means 34 gives the instruction of transmission to a terminal communication control part 35 and transmits a polling to the terminals 4 in PI of the line concerned. Thus, efficient communication is attained for the communication line with many terminals and the pollings are prevented from being excessively transmitted to the line with less terminals, whereby the efficiency of communication improves.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is used for setting polling intervals of a computer system. The present invention relates to polling interval setting of a communication processing device that is a polling control station connected to a host computer via an intersystem communication path.

[ヰAlready required]

[This issue] is a computer system in which a communication processing unit connected to multiple terminals is connected to a host computer with an external system configuration information file via an intersystem communication path, and the terminals under all communication lines are By setting the polling interval for each communication line so that the polling cycle is equal, when there are many terminals, polling is sent within a certain period of time to improve communication efficiency, and when there are few terminals, it is possible to prevent excessive load on the communication control device. This is to prevent a decline in communication ability.

[Conventional technology]

In conventional communication processing devices, the polling interval is set to a fixed value that is the same for any communication line regardless of the number of terminals under control.

[Problem that the invention seeks to solve]

In the polling interval setting in the conventional communication processing device described above, all communication lines have a fixed polling interval set to the same value. This has the drawback that the polling cycle becomes long and sufficient polling is not sent to each terminal control device, making it difficult to communicate efficiently.

Additionally, in lines with fewer terminal controllers than other communication lines, the polling cycle becomes smaller and excessive polling is sent, which places a load on the communication processing unit and reduces communication capacity. .

The present invention aims to eliminate such drawbacks and provides a system in which polling cycles can be made equal for all lines.

[Means for solving problems]

The present invention provides a system configuration information file that stores communication processing system configuration information, and provides a host computer that includes a network service management section that manages network services, and a system that is connected to the host computer via an intersystem communication path and controls communications. In a computer system comprising a host communication control unit that performs communication control, and a communication processing device including a terminal communication control unit that controls communication with a plurality of terminals via a communication line, the host computer is provided with communication processing system configuration control information. The communication processing system f1 includes a control transfer means for transferring information to the communication processing device, and the communication processing device is provided with a table for holding communication control information, and the communication processing system f1 includes a control transfer means for transferring various communication information transferred by the communication control transfer means. an initial configuration control information storage means for storing control information in the table; and determining the number of terminals under each communication line based on the communication control information, and communicating so that the polling cycles of the terminals under all communication lines are equal. The present invention is characterized in that it includes polling interval calculating means for calculating a polling interval for each line, and polling transmission instructing means for instructing the terminal communication control unit to perform polling transmission according to the calculated polling interval for each communication line.

[Effect]

The host computer transfers communication processing system configuration control information to the communication processing device. The communication processing device stores the transferred communication control information in a table, calculates the number of terminals under each communication line based on this information, and calculates the number of terminals under each communication line so that the polling cycle of the terminals under all communication lines is equal. Calculate the polling interval for . Polling transmission is performed according to the calculated polling interval of each communication line.

As a result, polling can be sent within a certain period of time to communication lines with a large number of terminals, allowing efficient communication, and excessive polling can be sent to communication lines with a small number of terminals. This prevents the communication processing device from being overloaded and prevents the communication capability from deteriorating.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

The embodiment of the present invention provides a system configuration information file 6 for storing communication processing system configuration information, a host computer 1 including a network service management section 11 that manages network services, and an intersystem communication path 2 for this host computer 1. A communication processing device 3 that includes a host communication control unit 31 that is connected through the communication line 5 and performs communication control, and a terminal communication control unit 35 that controls communication with the plurality of terminals 4 via the communication line 5.
Further, as a feature of the present invention, the host computer W. The device 1 includes a communication processing system configuration control transfer means 12 that transfers communication processing system configuration control information to the communication processing device 3, and the communication processing device 3 is provided with a table 36 that holds communication control information. Various communication control information transferred by the system configuration control transfer means l2 is shown in Table 3.
The number of terminals 4 under each communication line 5 is calculated based on the initial configuration control information storage means 32 stored in the communication line 6 and the communication control information, and the polling cycle of the terminals 4 under all communication lines 5 is made equal. It includes a polling interval calculation means 33 for calculating the polling interval of each communication line 5, and a polling transmission instruction means 34 for instructing the terminal communication control unit 35 to perform polling transmission according to the calculated polling interval of each communication line 5.

Next, the operation of the embodiment of the present invention structured as described above will be explained.

Communication processing system configuration control transfer means of host computer 1
2 collects the communication processing system configuration information from the system configuration information file 6 for the communication processing device, and transmits this information via the network service management unit 1k, the inter-system communication path 2, and the host communication control unit 31 shown in FIG. The information is sent to the initial configuration control information storage means 32.

The initial configuration control information storage means 32 stores the sent communication processing system configuration information in the table 36.

FIG. 2 is a flowchart showing the operation flow of the polling interval calculation means 33. The polling interval calculating means 33 calculates the number of dependent terminals 4 under each communication line 5 from the information set in the table 36, calculates the polling interval, and sets the calculated polling interval in the table 36.

FIG. 3 is a flowchart showing the operation flow of the polling transmission instruction means 34. FIG. 4 is a diagram showing the relationship between polling transmission sequence and time. In FIG. 4, T indicates a polling cycle, and N indicates the number of terminals under the line. The polling transmission instruction means 34 instructs the terminal communication control section 35 to transmit polling, obtains the polling interval of the corresponding line set in the table 36 by the polling interval calculation means 33, and clocks a polling interval timer (not shown). The communication processing device 3 transmits polling to the dependent terminals 4 based on a polling list, which is a list of subordinate terminals 4 to which polling is to be transmitted in response to a polling transmission instruction.

When the polling interval timer times out in response to polling or receives a data link termination code (EOT), the polling transmission instruction is again given to the terminal communication processing unit 35, and the polling interval timer is timed.

〔Effect of the invention〕

As explained above, according to the present invention, by making the polling cycle equal for all lines, polling is transmitted within a certain period of time to a communication line with a large number of terminals under the communication line, making it efficient. can communicate,
In addition, it is possible to prevent excessive polling from being sent to communication lines where the number of terminals under the communication line is small.
This has the effect of preventing a phenomenon in which a communication processing device is overloaded and its communication capability is reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a flowchart showing the operation flow of the polling interval calculation means according to the embodiment of the present invention. FIG. 3 is a flowchart showing the operation flow of the polling transmission instruction means according to the embodiment of the present invention. FIG. 4 is a diagram showing the relationship between polling transmission sequence and time in the embodiment of the present invention. 1...Host computer, 2...Intersystem communication path, 3
... communication processing device, 4 ... terminal, 5 ... communication line, 6 ... system configuration information file, 11 ... network service management section, 12 ... communication processing system configuration control transfer means , 31... host communication control unit, 32
... initial configuration control information storage means, 33 ... polling interval calculation means, 34 ... polling transmission instruction means, 35 ... terminal communication control section, 36 ... table. Embodiment 1 FIG. 2 Embodiment Operation of polling transmission instruction means FIG. 3 T/NT T/NT T/NT T/N Embodiment Relationship between polling transmission sequence and time FIG. 4

Claims (1)

[Scope of Claims] 1. A host computer including a network service management section that is provided with a system configuration information file that stores communication processing system configuration information and that manages network services; and a host computer that is connected to the host computer via an intersystem communication path. A computer system comprising a communication processing device including a host communication control unit that performs communication control and a terminal communication control unit that controls communication with a plurality of terminals via a communication line, wherein the host computer includes a communication processing system. a communication processing system configuration control transfer means for transferring configuration control information to the communication processing device; the communication processing device is provided with a table that holds communication control information; and the communication processing system configuration control transfer device includes a table for holding communication control information; initial configuration control information storage means for storing communication control information in the table; and calculating the number of terminals under each communication line based on the communication control information so that the polling cycles of the terminals under all communication lines are equal. A computer system comprising: polling interval calculation means for calculating a polling interval for each communication line; and polling transmission instruction means for instructing the terminal communication control unit to perform polling transmission according to the calculated polling interval for each communication line.