JPS6280731A - Transaction parallel processing control system based upon multiplexing of picture buffer - Google Patents

Abstract

PURPOSE:To expand the range of parallel processing of transactions by inputting data for the succeeding transaction immediately after the transmission of input data for one transaction. CONSTITUTION:A switching control part 8 controls the switching of a picture buffer on the basis of a command obtained from a discrimination part 7. The input data for the 1st transaction is transmitted by a transmission part 5 while holding the input data in the picture buffer 3, but at the end of transmitting processing, a picture buffer switching command is generated from the transmission part 5 to the control part 8. On the basis of the command, the control part 8 switches a picture buffer 3 to a picture buffer 4. Since data input can be attained by using the picture buffer 3 after the switching of the picture buffers, the processing selection 1-2 of the 2nd transaction can be started in parallel with the host processing 12-1 of the 1st transaction.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for controlling parallel processing of a transaction processing program executed in a computer system, and particularly relates to a method for controlling parallel processing of a transaction processing program executed in a computer system. The present invention relates to a parallel processing control method that improves throughput.

[Conventional technology]

Conventionally, in this type of transaction parallel processing control, only one two-screen buffer 23 has been used as shown in FIG. The fourth time chart shows the time chart of parallel processing of two transactions when there is only one screen buffer 23.
As shown in the figure. According to FIG. 4, the start time of parallel processing is determined 27 after receiving the response of the transaction processed earlier.
It matches the -1 basket. This is because when an error occurs in the data processing in the host computer in FIG. 3, it is necessary to judge it in the judgment part 27 and hold the input data on the 2-screen buffer 23. 2 screens/'? until it ends. This is because the contents of 7 Noah 23 cannot be changed. There was a limit to the parallel processing of two transactions.

[Problem that the invention seeks to solve]

As described above, in the conventional transaction parallel processing control method described above, the range of possible parallel processing is limited.

The drawback is that the scope of output processing is limited to the transaction that was processed first.

An object of the present invention is to provide a transaction parallel processing control method that eliminates the above-mentioned drawbacks.

[Means for solving problems]

In order to solve the above-mentioned problems of the prior art, the system of the present invention holds the input data of the transaction currently being processed until the processing result in the host computer is determined. In order to enable transaction data input, the system is configured to have multiple screens and screens for displaying and holding input data.

In order to effectively switch multiplexed screen buffers,
It also includes a switching control section, and is configured to have an interface with a transmitting section and a determining section.

[Embodiment] FIG. 1 is a functional block diagram showing an embodiment of the present invention. In the figure, 3 and 4 are screen buffers for displaying and holding input data, and are for the case where the multiplicity is 2. The switching control section 8 controls switching of screen buffers according to commands from the transmitting section 5 and the determining section 7.

FIG. 2 is a processing timing chart when two transactions are processed in parallel based on the functional configuration shown in FIG.

The transmitter 5 performs transmission processing while holding the input data of the first transaction in the screen buffer 3.
When the transmission process is completed, the transmitting section 5 issues a screen buffer switching command to the switching control section 8. In response to this command, the switching control section 8 performs switching from the screen buffer 3 to the screen buffer 4. After switching the screen buffer, data can be input using screen buffer 4, so start processing selection 1-2 for the second tranduction in parallel with host processing 12-1 for the first transaction. can do. If the processing result of the first transaction in the host computer 12 is an error, the determining unit 7 determines this and issues a command to switch the two screen buffers to the switching control unit 8. The switching control section 8 performs switching from the screen buffer 4 to the screen buffer 3. Then, the input data of the first transaction is displayed on the display section 1 from the screen buffer 3. At this point, it is possible to correct the input data.

After retransmitting the first transaction, switching from screen buffer 3 to screen buffer 4 is performed again.

Since the input data of the second transaction that was being input earlier is held on the screen buffer 4, it is redisplayed. Below, screen buffer 3 and screen buffer 4 will be used alternately.

〔Effect of the invention〕

As explained in detail above, in the transaction parallel processing method of the present invention, by simultaneously holding input data of two or more transactions in each multiplexed screen buffer, transaction data sent earlier to the host computer can be As soon as the processing result is determined to be an error, the screen buffer that holds the data can be displayed, so as soon as the transmission processing of one transaction is completed, the processing of the next transaction can be started. .

The range of parallel processing of multiple transactions is expanded compared to the conventional processing method in which processing of the next tranduction cannot be started until the processing result of the previously processed transaction data is determined. Therefore, the throughput of the electronic computer is significantly improved.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the configuration of an embodiment of the present invention, Figure 2 is a processing timing chart when two transactions are processed in parallel with the configuration shown in Figure 1, and Figure 3 is the configuration of a conventional system. Figure 4 is a block diagram to explain the two legal procedure amendments (method) in the conventional method.1985/2015/Month Jρ Commissioner of the Japan Patent Office Mr. Uga Michibe 1, Indication of the case 1985 Patent Application No. 219991 2, Name of the invention Transaction parallel processing control method by multiplexing screen buffers 6, Relationship with the amended person case Name of patent applicant (423) NEC Corporation 4, Agent 105 Address 1-4-10-5 Nishi-Shinbashi, Minato-ku, Tokyo, dated January 8, 1986 (shipment date: 61.1.28) of the amendment order.

Claims (1)

[Claims] 1. By having a plurality of screen buffers for displaying and holding input data in transaction processing, and by having a switching control unit that controls switching between each screen buffer, input data for one transaction can be transmitted. Screen buffer multiplexing is characterized by expanding the range of parallel processing of transactions by making it possible to input data for the next transaction immediately after the processing of the previous transaction without waiting for the processing results of that transaction. transaction parallelism control method.