JPS62198949A - Working control system for multi-processor system - Google Patents

Abstract

PURPOSE:To reduce the power consumption in a low load mode by changing the number of working processors in response to the total load quantity with no intervention of the manual operation. CONSTITUTION:A load monitor part 21 detects the working factors of all working processors 11-1n and informs them to a selection part 22. Thus the part 22 calculates the average working factor of those processors 11-1n and decides whether this average factor is larger than the prescribed maximum value or not. If the average factor is larger than the maximum level, the presence or absence of the processors that discontinued their operations is checked. If such processors are detected, one of these processors is selected and the start of this processor is instructed to a control part 23. If the average working factor is less than the prescribed level, the propriety of stopping a single processor is decided. Then one of those processors is selected and a command is given to the part 23 to stop the drive of the processor is the average working factor is less than the prescribed maximum level.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an operation control method used in a fi load distributed multiprocessor system.

In conventional technical data processing systems, a load-balanced multiprocessor system configuration is often adopted in consideration of reliability, WA continuity, and the like.

In such a load-balanced multiprocessor system, the total amount of load to be processed usually varies considerably depending on the time of day, so the number of processors to be installed is determined according to expected high load conditions.

Problems to be Solved by the Invention In the above-mentioned conventional multiprocessor system, all processors are configured to operate at a low utilization rate even when the load is low, which increases the power consumption of the entire system. There is a problem.

Additionally, if you try to stop several processors to reduce power consumption during low loads, it not only requires manual intervention, which is time-consuming, but also leads to misjudgment of the total load and operational problems. There is also a risk that incorrect stop/start operations may affect the processing.

Structure of the Invention Means for Solving the Problems The operation control method of the present invention which solves the problems of the prior art described above detects the amount of load being processed by each processor and determines whether the amount of load on each processor is within a predetermined range. a selection means for automatically selecting a processor whose operation is to be newly stopped or started so that the operation is newly stopped or started, and a means for automatically controlling the stoppage or start of supply of operating power to the selected processor,
It is configured to reduce power consumption during low loads by dynamically changing the number of operating processors according to the total load without human intervention.

Hereinafter, the operation of the present invention will be explained in detail together with examples.

Embodiment FIG. 1 is a block diagram showing the configuration of a load-balanced multiprocessor system that uses an operation control method according to an embodiment of the present invention.

This multiprocessor system includes an operation-side '4B device 20 that is composed of a load monitor section 21, a selection section 22, and a control section 23 in addition to n processors 11, 12, . . . 1n to be controlled. There is.

The load monitor unit 21 monitors instructions executed by each operating processor, and detects the operating rate of each operating processor by detecting predetermined instructions executed by this processor at the start and end of load processing. .

That is, as illustrated in the flowchart of FIG. 2, when the load monitor unit 21 detects the start of load processing from a predetermined command at the start of load processing executed by each operating processor in step 31, it detects the start of load processing in step 32. Proceed to
The processor number that started the process is detected from the detected position. Next, in step 33, the load monitor unit 21 activates the processing time timer of the corresponding processor among the processing time timers held for each processor, and in step 34, the load monitoring unit 21 activates the processing time timer of the corresponding processor among the processing time timers held for each processor. After saving the corresponding contents, the process returns to step 31.

When the load monitoring unit 21 detects the end of load processing based on a predetermined command at the end of load processing in step 35, it detects the processor number in step 36. Next, in steps 37 and 38, the load monitor section 21 saves the contents of the processing time timer of the processor and activates the non-processing time timer. Subsequently, the load monitor unit 21 proceeds to step 39, calculates the operating rate of the processor based on the contents of the processing time timer of the processor saved this time and the contents of the non-processing time timer of the corresponding processor saved last time, and calculates the utilization rate of the processor. Notify.

The selection unit 22 is activated periodically and starts processor selection processing as shown in the flowchart of FIG.

That is, in steps 41 and 42, the selection unit 22 calculates the time average value of the latest m operation rates received from the load monitor unit 21 for each operating processor, and then proceeds to step 43 to determine the operating rate. Calculate the average utilization rate for all processors in the system. In addition, in this example,
All processors have the same processing power. continuation,
In step 44, the selection unit 22 determines whether the average value of the operating rates of all operating processors is equal to or higher than a predetermined maximum value (for example, 80%), and if so, proceeds to step 45.
Determine whether there is a processor that is not operating. Selection section 22
If there is an inactive processor, step 46 is executed.
, selects one of them, instructs the control unit 23 to start the operation, and ends the selection process. Even if the operating rate is equal to or higher than a predetermined maximum value, if there is no inactive processor, the selection control unit 22 immediately ends the selection process.

In step 44, if the average value of the operating rates of all operating processors is less than or equal to the predetermined maximum value, the selection unit 22 proceeds to step 47, and sets this to a predetermined minimum value (for example, 60%).
Determine whether the following is true. If the average value of the operating rates of all processors is less than or equal to the predetermined minimum value, the selection unit 22 proceeds to step 48, and if one of the operating processors is stopped, the selecting unit 22 determines that the average operating rate (1rt is the predetermined maximum value) is It is determined whether or not one unit can be stopped depending on whether the value exceeds the value. Selection unit 22
If the new operating rate does not exceed the predetermined maximum value, the process proceeds to step 49, selects one of the operating processes, instructs the control unit 23 to stop its operation, and performs the selection process. end.

If the determination result in step 47 or 48 is negative, the selection unit 22 causes the control unit 2 to activate the new processor.
The selection process is immediately terminated without issuing a command to 3.

The control unit 23 causes the selection unit 22 to start the operation of the processor.
When receiving the stop F command, it issues an operation start/stop command to the specified processor, and then supplies/stops the supply of operating power.

Above, we have illustrated the case where each processor has the same processing capacity, but if these differ from processor to processor, consider the processing capacity! The processor/source to start or stop the operation may be selected based on the total load amount determined by Q.

In addition, although a configuration has been exemplified in which the load monitor unit detects an execution command of a processor to detect the start and end of processing, a configuration in which each processor notifies 4A and the load monitor unit 21 of the start and end of processing. You can close it. Or again,
Any one of the processors that controls load distribution between processors directly notifies the selection unit 22 of the operating rate of the operating processor, or such one processor itself performs processing for selecting a target to start or stop operation. It can also be configured.

Effects of the Invention As explained in detail above, the operation control method of the present invention has the following effects:
Means for detecting the amount of load being processed by each processor and automatically selecting a processor to newly stop or start operation so that the amount of load on each processor falls within a predetermined range, and controlling the operation of the selected processor. Since the configuration is equipped with a control means that automatically controls start/stop, the number of operating processors can be dynamically changed according to the total load ratio of 4:1 without human intervention, reducing power consumption during low loads. Saved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a load-balanced multiprocessor system to which an operation control method according to an embodiment of the present invention is applied, and FIG. 2 shows a load monitoring unit 21 of the operation control device 20 shown in FIG. FIG. 3 is a flowchart for explaining an example of a procedure for monitoring processing. Similarly, FIG. 1l-1n...Processor, 20...Operation control device, 2
1: Load monitor section, 22: Selection section, 23: Control section.

Claims (1)

[Claims] In a load-balanced multiprocessor system, the amount of load on each operating processor is detected, and the operation is newly stopped or started so that the amount of load on each processor falls within a predetermined range. Operation control of a multiprocessor system characterized by comprising: selection means for automatically selecting a processor; and control means for automatically controlling stop or start of supply of operating power to the selected processor. method.