JPS62172840A - Transferring system for data - Google Patents

Abstract

PURPOSE:To reduce a control processing overhead per one transmitting data, and to execute efficiently transfer processing, by providing a waiting buffer for transfer data, and transferring data collectively. CONSTITUTION:In accordance with an instruction from a terminal system, necessary data in a data base 13 is read out to a transaction processing part 14, data working is executed, and transmitting data is sent to a processing part 15. The processing part 15 stores successively a large quantity of data from the processing part 14, in a waiting buffer 17, with respect to many transmitting data, and when it has become full, or when a specified time has elapsed, the transmitting data are collectively transferred to a processor 21. A processing part 25 in the device 2 transfers data to a transaction processing part 24, converts it to data which has received a transmission request, and sends it out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication control system, and particularly to a data transfer system suitable for transmitting data between systems.

[Conventional technology]

In the conventional data transfer method, as disclosed in Japanese Patent Application Laid-open No. 55-1000, each time data to be transmitted to another data processing device is generated between data processing systems, one data processing device transfers data. It had become a thing.

[The interlayer point that the invention attempts to solve]

The former conventional technology explained in the prior art section above uses a large number of I/O systems in an online environment between data processing systems.
In the current situation where ranzaktions operate simultaneously, there is a large amount of data to be sent, which increases the overhead time spent on user program execution control for data transmission processing, reducing the data processing capacity between online data processing systems. However, there was no consideration given to the issue of data transfer, and there was a need to further improve the efficiency of the data transfer process.

[Means for solving problems]

The above purpose is to provide a waiting buffer in which data to be transferred is stored in one of the data processing systems, and when the buffer becomes full or a certain period of time has elapsed, the data is transferred all at once. 1 By transmitting,
achieved.

[Effect]

The data transfer method is determined between data processing systems connected online.
Or, it operates to control data to be transferred all at once, subject to the passage of a certain period of time.

Thereby, data communication between data processing systems is
If the amount of data is large, you can transfer the data all at once when the data waiting buffer is full.

When the amount of data l is small, the data can be transferred all at once after a certain period of time has elapsed, making it possible to further improve the efficiency of the data transfer process.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 shows a schematic diagram between online data processing systems in which the data transfer method of the present invention is implemented.

- The data processing device 11 is coupled to other data processing devices 21 via a communication line 16. A terminal system 12 and a database system 13 are connected to the data processing device 11 . Inside the data processing device 11, there is a transaction processing unit 14 that refers to or updates the database in the database system 13 based on commands input from the terminal system 12, and sends and receives data to and from other data processing devices 21. Transmission/reception processing section 15 of data processing device and other data processing device 21
It is comprised of a waiting buffer 17 for storing data in order to transfer the data all at once. Similarly, in other data processing devices 21, the terminal system 22. Database system 23゜transaction processing section 24. Transmission/reception processing section 25 of data processing device. It is composed of a waiting buffer 27.

Next, the operation between two systems will be explained.

In accordance with instructions from the terminal system 12, the database 13
The necessary data out of the data stored in the transaction processing unit 14 is read out.

When necessary, the data is processed and the data to be transmitted is passed to the transmission/reception processing section 15. Since the transmission/reception processing section 15 receives a large amount of transmission data from the transaction processing section 14, it waits for the transmission data in the waiting buffer 17. The transmission/reception processing unit 15 transfers the transmission data all at once to another data processing device 21 either when the waiting buffer 17 is full of transmission data or when a certain period of time has elapsed. The transmitted data is received by the transmission/reception processing unit 25 in the data processing device 21, and is passed on to the 1-ranzaktion processing unit 24, where it is converted into the data originally requested for transmission.

Data communication control, which is an embodiment of the data transfer method of the present invention, will be explained in detail using the flowchart shown in FIG.

1-According to the Lanzamo communication request (100), the transmission/reception processing unit 15 performs a process of waiting in the waiting buffer 17 in order to send data in bulk, but before this process, it is checked whether the waiting buffer 17 is full or not. (lot) If the waiting buffer 17 is full, data transmission processing via one communication line 16 is started (104), the previously stored data is transferred, and the waiting buffer 17 is made empty. If the waiting buffer 17 is not full or if the waiting buffer 17 is empty,
Data to be transmitted is queued in the queue buffer 17 (102). Furthermore, under the control of the transmission/reception processing unit 15, it is checked whether a certain period of time has elapsed after the transmission data was queued in the queue buffer 17 (103).
, if a certain period of time has elapsed, the waiting buffer 17
Regardless of how full it is.

Data transmission processing is started via the communication line 16 (105
), perform data transfer. Furthermore, if the predetermined time has not elapsed, the CPU 10 waits until the predetermined time has elapsed, transfers data immediately after the elapse of the predetermined time (105), and ends the data communication control.

If data is not sent until the amount of data to be transferred reaches a certain amount, if the amount of data to be transferred is small, the time spent on data transfer processing will be longer, and online data communication control between data processing systems will be required. When considering the application to

According to this embodiment, when a large amount of data is to be transferred, the data can be transferred all at once when the waiting buffer 17 is full, and even when a small amount of data is to be transferred, the data can be transferred within a certain period of time. This has the effect of increasing the efficiency of transfer processing.

〔Effect of the invention〕

According to the present invention, the control processing overhead per transmission data is reduced and the transmission processing is guaranteed within a certain period of time, so there is an effect that the data transfer processing can be made more efficient.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an online data processing system in which the present invention is implemented, and FIG. 2 is a flowchart of data transmission control. 11.21...Data processing device, 12.22...Terminal system, 13.23...Database system, 1
4.24...Transaction processing section. 15.25... Transmission/reception processing unit, 16... Communication circuit. 17.27...Waiting buffer. ／、−゛、

Claims (1)

[Claims] 1. In a data transmission/reception control method between a plurality of data processing systems connected via a communication line, data to be transmitted from one data processing system to another data processing system is temporarily stored, A data transfer method characterized by transferring data all at once either when the storage capacity is full or after a certain period of time has elapsed.