JP3080069B2 - Job scheduling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a job scheduling method for a computer system that processes a batch job.

[0002]

2. Description of the Related Art An example of a conventional job scheduling method in a computer system for processing a batch job is as follows.
This is described in the manual for job management issued by NEC Corporation in 1997. In this prior art,
A batch job to be submitted is scheduled in a job class, is activated using a default value of a parameter of the job class as a default value of a parameter of the job, and the multiplicity of the batch job is controlled by the multiplicity of the job class.

[0003]

However, this prior art has the following problems. A first problem is that when batch jobs are submitted to a certain job class, it is impossible to mix batch jobs that need to be started in order and batch jobs whose order is not fixed. The reason is that batch jobs that need to be started in order need to be started at the multiplicity of 1, and when set to the multiplicity of 1, the execution of batch jobs whose order may be undefined becomes inefficient.

[0004] The second problem is that when a job is submitted to a certain job class, the job attributes such as the job use resource limitation must be defined for each job. I needed to. The reason is that the default value of the attribute such as the limitation of the resource used by the job is determined by the job class. Therefore, for the batch job submitted to the same job class, the attribute such as the limitation of the resource used by the job is specified for each batch job. If there is no job, the job is executed with attributes such as the limitation of the resources used by the job specified in the job class.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to enable a mixture of jobs that need to be started in order and jobs whose order is not fixed.

[0006]

According to the present invention, there is provided a computer for processing a batch job.
In the job scheduling method in the system,
Multiple subclasses under the job class of the
Multiplicity and usage for each job class and each subclass.
Resource restrictions as job attributes and select the job
Job and subclass jobs when
The multiplicity of the job by referring to the job attribute
To determine whether the job can be started,
Run jobs under defined resource limits. This
Subdivide the job class into subclass units
Attributes such as multiplicity and resource limitation of batch jobs
Can be defined, so various jobs can be
Switch job can be executed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a job scheduling method according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a functional configuration of the present embodiment. As shown in this figure, the present embodiment includes a job class definition unit 1, a subclass definition unit 2, a job submission unit 3, a job schedule unit 4, and a job execution unit 5.

The job class definition means 1 creates job classes A to C and defines job attributes such as the multiplicity and the resource limit used by each job (batch job) for each job class A to C. The subclass definition means 2 creates a subclass for each of the job classes A to C, and defines job attributes such as the multiplicity of the subclass and the resource limit used by each job.

[0010] For example, as shown in the figure, the subclass definition means 2 executes the subclass A1
Create A3 and subclass B for job class B
2 and B3, and subclasses C1 and C3 for the job class C. The job input unit 3 receives the job and passes control to the job schedule unit 4 using the job class and the subclass as parameters.

The job schedule means 4 checks whether or not the job accepted by the job input means 3 can be executed. And if you can run the job,
The job execution means 5 executes the job. Further, if there is no free space in any of the multiplicity of the entire job, the multiplicity of the job class, or the multiplicity of the subclass, the job scheduling unit 4 waits until the multiplicity becomes free.

The job executing means 5 refers to the job attributes such as the resource limit of the job, the job attribute such as the resource limit of the job class, and the attributes such as the resource limit of the subclass.
Finally, the job use resources are set, and the job is executed.

Next, the operation of the embodiment constructed as described above will be described in detail with reference to the flowcharts shown in FIGS.

First, prior to operation, a job class is defined by the job class definition means 1, and default values of job attributes such as the multiplicity of the job class and the resource limit used by jobs executed in the job class are defined. . For example,
The job class definition means 1 defines the three job classes A to C as described above, and defines the multiplicity and the default value of the job attribute for each of the job classes A to C.

Subsequently, the subclasses A1 to A3, B1, and B are stored in the job classes A to C by the subclass definition means 2.
2, C1, B2 are defined, and each subclass A1-A3, B2,
The multiplicity of B3, C1, C3 and the subclasses A1 to A3, B2,
Default values of job attributes such as restrictions on resources used by jobs input to B3, C1, and C3 are defined.

When a job is submitted in such a state (step S11), the job is accepted by the job submission means 3. Then, whether or not the job is executable is checked by the job scheduling means 4 and selection is started (step S12).

At this time, the job schedule means 4 first verifies whether or not there is a vacancy in the multiplicity of the entire system (step S13). If there is no free space in the multiplicity of the entire system, the selection of the job is started (step S
Return to step 12) and wait until a vacancy occurs. on the other hand,
If there is a vacancy in the multiplicity of the entire system, it is checked whether there is a vacancy in the multiplicity of the job class (step S1).
4).

If there is no vacancy in the job class multiplicity, the process returns to the start of job selection (step S12), and waits until a vacancy occurs. It is checked whether there is a vacancy in the multiplicity of the subclass (step S15). Further, if there is no vacancy in the multiplicity of this subclass, the process returns to the start of job selection (step S12) and waits until a vacancy occurs.

Here, if there is a vacancy in the subclass multiplicity, the job schedule means 4 causes the job execution means 5 to start a job (step S16). At this time, the setting of job attributes such as the limitation of resources used by the job is determined by the setting of the job class and the setting of the subclass. That is, as shown in FIG. 3, when the execution of a job is started (step S21), it is verified whether or not an attribute such as a restriction on resources used for various jobs is specified (step S22).

For example, in this verification, when determining the execution priority of a job, it is verified whether or not the execution priority is set for each job. And
If the execution priority is set, the execution priority is enabled (step S23), and the job is executed (step S24).

On the other hand, if the execution priority is not set for each job, it is verified whether or not the execution priority is set in the subclass (step S25). If there is an attribute definition of the execution priority for each subclass, it is enabled (step S26) and the job is executed (step S24). If there is no attribute definition of the execution priority for each subclass, the job class The definition of the execution priority is validated (step S27), and the job is executed (step S24). When the execution of one job is completed (step S17), the process returns to step S12, and the next job is selected.

According to this embodiment, the subclasses A1 to A3, B2, B3, C
1, create C3, subclasses A1 to A3, B2, B3, C
1. Job attributes such as job multiplicity or job resource limitation are defined for each C3 unit, so jobs that need to be started in order and jobs that can be executed in any order can be executed simultaneously in one job class. Becomes Further, since the multiplicity of the job classes A to C can be controlled, it is possible to prevent the job classes from affecting the other job classes beyond the job class.

[0023]

As described above, the job scheduling method according to the present invention has the following effects. (1) The first effect is that batch jobs that need to be executed sequentially and batch jobs that need to be executed at the same time can be executed by one job class. The reason is that a subclass is created under the job class of the batch job, and job attributes such as job multiplicity or job use resource limitation are defined for each job class and subclass. (2) The second effect is that batch jobs having different attributes such as restrictions on the resources used by jobs can be executed by one job class. The reason is that multiple subclasses are defined in the job class, and attributes such as the limitation of the resources used by the job are defined in each subclass.
This is because the sub-class of the batch job to be submitted can be changed to automatically switch attributes such as the limitation of resources used by the batch job.

[Brief description of the drawings]

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

FIG. 2 is a first flowchart showing the operation of the embodiment of the present invention.

FIG. 3 is a second flowchart showing the operation of the embodiment of the present invention.

[Explanation of symbols]

 1 ... job class definition means 2 ... subclass definition means 3 ... job input means 4 ... job schedule means 5 ... job execution means A to C ... job classes A1 to A3, B2, B3, C1, C3 ... … Subclass

Continuation of the front page (56) References JP-A-3-52055 (JP, A) JP-A-1-24539 (JP, A) JP-A-63-184840 (JP, A) JP-A-7-319715 (JP, A) JP-A-9-305418 (JP, A) JP-A-3-118637 (JP, A) JP-A-57-162049 (JP, A) JP-A-62-174860 (JP, A) 2-236640 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 9/46 G06F 1/00 G06F 15/00 G06F 15/16 JICST file (JOIS) CSDB (Japanese patent Agency)

Claims (1)

(57) [Claims] 1. A job scheduling method in a computer system for processing a batch job, wherein a plurality of subclasses are provided under a job class of the batch job.
Created , multiplicity and resource usage for each job class and each subclass
Is defined as a job attribute , and the job class and sub-
By referring to each job attribute of the class,
In addition to judging the multiplicity, it is judged whether or not to start,
Jobs are restricted by the resource usage defined in the job attributes.
A job scheduling method characterized by being executed .