JPS62264342A - Measuring equipment for computer load - Google Patents

Abstract

PURPOSE:To measure the load of a computer system with use of an external timer mechanism by supplying a microinstruction to a microinstruction part to control the start/stop of measurement of time for said timer mechanism. CONSTITUTION:A start micropart 3 is started by the interruption waiting instruction contained in an execution control program and the start signal is supplied to a timer mechanism 7 and a counter 8. The counter 8 counts up by 1 for each input of the start signal. When an interruption occurs, a CPU 1 is set under an interruption processing state and a stop micropart 4 is actuated. Thus the operation of the mechanism 7 is stopped and the time is measured up to the stop time point from the start time point of the mechanism 7. This measured time value is integrated by an integration mechanism 9. A read micropart 5 delivers the read signal and calculates the load of the CPU 1 from the contents of the mechanism 9 and the count value of the counter 8 of that time point.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to load measurement during execution of a computer program.

[Conventional technology]

In conventional devices, when measuring computer load, CPU idle time, etc., a measurement program is installed, and dummy logic instructions, such as floating-point operation carry-back, are executed in this installed dummy program. By constantly running the program, the time when there is no load is accumulated, and the load on the computer is calculated from this accumulated time and the actual time.

[Problem that the invention seeks to solve]

Since the conventional device is configured as described above, it is necessary to normalize the instruction execution time of the dummy program according to the real time, and for this purpose, it is necessary to perform preliminary measurements in advance. application program
Since the measurement is performed under the control of the execution management program that manages the execution of the on program (that is, the program that is the target of load measurement) and the gummy program for load measurement, the overhead time for the execution management program may cause an error. There were problems such as the inclusion of Toshi-C.

This invention was made to solve the above-mentioned problems, and has nothing to do with the control of the execution management programζ:
The object of the present invention is to obtain a measuring device which can also measure the load of the execution program itself, which has been difficult to measure in the past.

[Means for solving problems]

In the device of this invention, a timer mechanism, a counter, and an integration mechanism are provided outside the central processing unit (hereinafter abbreviated as CPU), and a microinstruction section is provided within the CPU. a reset micro section that outputs a reset signal that resets the counter and the integration mechanism at a time point; a start micro section that outputs a start signal that starts the timer at the time of occurrence of a predetermined event related to load measurement; , a stop micro section for outputting a stop signal to stop the timer at the end of the event, and a read micro section for outputting a read signal at a time determined by program control;
The elapsed time from the start signal to the stop signal is integrated by an integration mechanism, the number of occurrences of the start signal is counted by a counter, and the contents of the integration mechanism and the counter are read by a read signal.

[Effect]

Microinstruction part C: Since the necessary measurements are performed by the operations of the provided start micro part, stop micro part, reading micro part, and reset micro part, there is no need to execute a measurement program.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

The drawing is a block diagram showing one embodiment of the present invention, and shows only the portions related to the present invention extracted from the configuration of the computer system. In the figure, (1) is the CPU
, (21 is CPU l: included microinstruction section, +3
1, +4),, +51, 16) are microinstructions prepared for load measurement in the microinstruction part (1), (3) is the timer start micro part, (4) is the timer stop micro part, (5) ) is the register reading micro section of the external mechanism, and (6) is the register reset micro section. In addition, for load measurement, the CPU is equipped with external mechanisms (7), a counter mechanism (8), and (9) a timer mechanism.
) is an accumulation mechanism.

Next, the operation of the apparatus shown in FIG. 1 will be described in the case where the integrated value of the time during which the CPU III is in a no-load state is measured. The CPU fi
Since the positive no-load state is started, the start micro section (3) is activated by the δ-reduction command, and a start signal is outputted to the timer mechanism (7) and counter (8). From this point on, at the time of system initialization, that is, with the IPL (initial program loading) operation, the reset micro section (6) outputs a reset signal, and resets the counter (8) and the totalizing mechanism (91). Each time the start signal is input, the count value of the counter (81) increases by the value l.

Next, when an interrupt occurs, the CPU 111 enters the interrupt processing state from the interrupt waiting state, and the no-load state of the CPU [11] ends, so the stop micro section ( 41 operates, a stop signal is output, and the timer mechanism (7) is stopped.
7) The time from the start point ζ to the corresponding stop point is measured, and this measured value is integrated by the integrating mechanism.

The reading micro@+51 outputs a reading signal under program control from the CPU (tl), and the counter (
8) and the contents of the iAx mechanism 19) are stored in a buffer register (not shown). The count value of the counter (8) represents the number of times the CPU fil has been in the no-load state within a predetermined time, and the content of the integrating mechanism (9) represents the cumulative amount of time that the CPU 111 has been in the no-load state. show.

The load on the CPU il+ can be calculated from these measured values.

Next, to measure the load on the execution management program, for example, the interrupt handling mechanism and monitor call instructions (for example, SvC
The start micro unit (3) may be started by a command), and the stop micro unit (4) may be started by a logic command that transfers control from the execution management program to the application program.

In this way, in general, the starting micro section (3) is set at the time of occurrence of the event to be measured in connection with load measurement.
By activating the stop micro section (4) at the end of the event, it is possible to measure the load associated with the event.

Furthermore, for important processing programs that should be completed within a certain period of time, the start micro unit (3) is set to start at the start of the Byakugan program, and the stop micro unit (4) is set to start at the end of the program. Ok,
When the stop signal is not input within the above-mentioned fixed time after the start signal is input to the timer mechanism (7), an abnormality detection interrupt is sent to cause the system monitoring mechanism (for example, a timer mechanism) to perform the same operation. You can also do it.

〔Effect of the invention〕

As described above, according to the present invention, load measurement is performed not by executing a dummy programm, but by an external timer mechanism, and a microinstruction section that controls the start and stop of time measurement by this external timer mechanism is provided. Therefore, the influence of measurement on the multimeter system can be ignored, and highly accurate measurement results can be obtained.

[Brief explanation of drawings]

The drawing is a block diagram showing an embodiment of the present invention. (1) is the CPU, [21 is the micro instruction section, (3) is the start micro section, (4J is the stop micro section, (5) is the read micro section, (6) is the reset micro section, and (7) is the timer mechanism. , Abnormality Detection Interruption Procedure Amendment (Voluntary)

Claims (1)

[Claims] A central processing unit (CP) of a computer subject to load measurement.
U) A timer mechanism, counter, and integration mechanism provided externally, a start micro section that outputs a start signal at the time of occurrence of the event to be measured in connection with the load measurement, and a stop signal at the end of the above event. a stop micro section that outputs an output; a reading micro section that outputs a read signal to read the contents of the counter and the content of the integration mechanism at a time determined by a program executed by the central processing unit; and a reading micro section that is executed by the central processing unit. a microinstruction unit provided in the central processing unit, including a reset micro unit that outputs a reset signal that resets the contents of the counter and the integration mechanism at an initialization time determined by a program; Means for resetting a counter and the integration mechanism and increasing the counted value of the counter by 1 in response to the start signal; and measuring the time from the start signal to the stop signal corresponding to the start signal by the timer mechanism; A computer load measuring device comprising: means for adding the measured time to the content of the integration mechanism; and means for calculating a numerical value related to the load of the computer using data read by the read signal.