JPH0319034A - Job control system - Google Patents

Abstract

PURPOSE:To prevent the deterioration of performance of an on-line system by taking a job out of a job input queue and starting it only when the number of batch jobs maintained and controlled via a job control table is smaller than a prescribed maximum multiple degree of batch job. CONSTITUTION:A job control table 106 stores at least the number of batch jobs, and a job register means 101 registers a job into a job input queue. Then a job take-out means 103 takes the job out of the job input queue when the number of batch jobs stored in the table 106 is smaller than a prescribed maximum multiplex degree of batch job. A job start means 104 starts the job taken out of the queue, and a job monitor means 105 monitors the state of the started job to maintain and control the number of batch jobs stored in the table 106 and also to urge the means 103 to take a job out of the job input queue. Thus it is possible to limit the multiple degree of batch jobs and to control the sweep- out of the on-line jobs to a virtual storage. As a result, the deterioration of performance is prevented for an on-line system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a job management method, and more particularly to a job management method in an operating system that employs a multiple programming method.

[Conventional technology]

Conventionally, with this type of job management method, jobs can be started up to the maximum multiplicity, and when main memory is insufficient, online jobs waiting for input from the terminal are purged to virtual memory to make effective use of main memory. Ta.

[Problem to be solved by the invention]

In the conventional job management method described above, when main memory becomes insufficient, the main memory contents are flushed to virtual memory to secure main memory, so when many batch jobs are running at the same time, main memory is used when waiting for input from the terminal. There is a drawback that online jobs that do not need to be in the virtual memory 1 are swept out to the virtual memory 1, and that the response to input from the terminal takes time due to the input/output to the virtual memory.

In view of the above-mentioned points, an object of the present invention is to provide a job management method that prevents deterioration in the performance of an online system by limiting the multiplicity of batch jobs and suppressing the flushing of online jobs to virtual memory. There is a particular thing.

[Means to solve the problem]

The job management method of the present invention, in an operating system that employs a multiple programming method, includes: a job management table that stores at least the number of batch jobs; a ship registration means that registers jobs in a job input queue; Ship retrieval means for retrieving a job from the job input queue when the number of batch jobs is less than a predetermined maximum batch job multiplicity; job activation means for activating the ship retrieved by the job retrieval means; The apparatus further includes job monitoring means for maintaining and managing the number of batch jobs in the job management table by monitoring the status of activated jobs, and for prompting the job retrieval means to retrieve a job from the job input queue.

[Effect]

In the job management method of the present invention, the job management table stores at least the number of batch jobs, the job registration means registers the job in the job input queue, and the ship retrieval means stores the number of batch jobs in the job management table at least when the number of batch jobs is the maximum of a predetermined batch job. The job is managed by taking out the job from the job input queue when the number of jobs is less than the multiplicity, the job starting means starts the job taken out by the job taking out means, and the job monitoring means monitors the state of the job started by the job starting means. The number of batch jobs in the table is maintained and managed, and the job retrieval means is prompted to retrieve the job from the job input queue.

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a job management system according to an embodiment of the present invention.
, job extracting means 103 , and job starting means 104
, job monitoring means 105 , and job management table 10
6 and a job 200.

Referring to FIG. 2, the job management table 106 includes the maximum multiplicity of batch jobs 1061 and the number of batch jobs 10.
62, and the number of online jobs is 1063.

Next, the operation of the job management system of this embodiment configured as described above will be explained.

Job registration means 101 registers job 200 in job input queue 102 .

When the job 200 is registered in the job input queue 102 by the job registration means 101, the job retrieval means 103
obtains the maximum multiplicity of batch jobs 1061 and the number of batch jobs 1062 from the job management table 106,
The number of batch jobs is 1 since the maximum batch job multiplicity is 1061.
When the number of 062 is low, the job 200 is taken out from the job input queue 102 and passed to the job starting means 104.
The number of batch jobs is 1062, which is the maximum batch job multiplicity of 10.
61, the job 200 remains in the job input queue 102.

The job starting means 104 starts the job 200 retrieved by the job retrieving means 103.

At that time, job management table 1 is displayed in job monitoring means 105.
06 update will be notified.

The job monitoring means 105, which has been notified of the update of the job management table 106 from the job starting means 104, adds "1" to the number of batch jobs 1062 if the job 200 started by the job starting means 104 is a batch job,
If it is an online job, the number of online jobs is 1063.
The job management table 106 is updated by adding 1” to
A notification is sent to the job retrieval unit 103 to urge the job retrieval unit 103 to retrieve the job 200 from the job input queue 102.

Further, the job monitoring means 105 is a job starting means 104.
When job 200 changes from a batch job to an online job, or from an online job to a batch job, or when the job 200 starts
0 ends, the job management table 106 is maintained and managed by adding or subtracting the number of batch jobs 1062 and the number of online jobs 1063, and a notification is sent to the job retrieval means 103 to retrieve the number of jobs from the ship input queue 102. Prompts extraction of job 200.

Due to the seed control described above, if the number of batch jobs reaches the maximum batch job multiplicity, job 2 is newly created.
00 is never started, and the number of batch jobs is 1.
062 becomes less than the maximum number of bunch jobs, the job 200 is automatically transferred to the job input queue 102.
It is taken out and activated.

〔Effect of the invention〕

As explained above, the present invention takes out a job from the job input queue and starts it only when the number of batch jobs maintained and managed in the job management table is less than the predetermined maximum batch job multiplicity. By limiting the degree of batch job multiplicity, it is possible to suppress the flushing of online jobs to virtual memory, which has the effect of not degrading the performance of the online system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a job management system according to an embodiment of the present invention, and FIG. 2 is a diagram showing the configuration of a job management table in FIG. 1. In the figure, 101... job registration means, 102... job input queue 103... job extraction means, 104... job starting means, 105... job monitoring means, 106... job management table, 200...Job, 1061...Maximum multiplicity of punch jobs, 1062...Number of batch jobs, 1063...Number of online jobs.

Claims (1)

[Scope of Claims] An operating system that employs a multiple programming method, comprising: a job management table that stores at least the number of batch jobs; job registration means that registers jobs in a job input queue; and batch jobs in the job management table. job retrieval means for retrieving a job from the job input queue when the number of batch jobs is less than a predetermined maximum multiplicity of batch jobs; job activation means for activating the job retrieved by the job retrieval means; job management means comprising: job monitoring means for maintaining and managing the number of batch jobs in the job management table by monitoring the status of jobs that have been added to the job management table; and job monitoring means for prompting the job retrieval means to retrieve jobs from the job input queue. method.