JPH01112442A - Measuring instrument for cpu load distribution - Google Patents

Abstract

PURPOSE:To attain simultaneous measurement to a number of programs by tabulating the number of deciding times of an extracting address deciding part in each program and calculating the rate of the deciding times of the respective programs to whole number of extracting times. CONSTITUTION:A CPU load distribution calculation part 1-5 holds a number of deciding times N1...NM to the program and a summary value N of whole numbers to respective programs P1...PM. A value of '0' is respectively added to the numbers of deciding times N1...NM and the N as an initial value. However, each time an extracting address deciding part 1-4 decides that a storing address is in the storing address area of the program P1, the calculating part 1-5 adds a value of '1' to the number of deciding times N1 to the program and the summary value N of the whole number of deciding times. When the value of the N is over a constant value, the calculating part 1-5 calculates rates N1/N...NM/N of the numbers of deciding times of the respective programs to the whole number of extracting times.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a CPU load distribution measuring device, and more particularly to a CPU load distribution measuring device that measures the distribution of CPU loads for each program running on a computer system.

[Conventional technology]

CP for each program running on a computer system
A conventional CPU load distribution measurement device for measuring U load distribution incorporates a CPU execution time measurement function and a CPU execution time measurement section registration function into a firmware emulator or the like that executes each program.

Using these, the conventional CPU load distribution measuring device
Register the execution start address and execution end address of each program, measure the 1m interval between the two, calculate the ratio of this time interval to the total execution time, and calculate the CP
Measuring U load distribution.

1. Problems to be Solved by the Invention] In the conventional CPU load distribution measuring device described above, the execution start address and execution end address of the program to be measured must be registered in the measuring device. Programs often have multiple execution start addresses and multiple execution end addresses, and there is a problem in that they cannot be measured unless the design structure of the program is understood.

In addition, computer systems use the operating system for -fi and perform parallel processing using processing units of programs called tasks, and programs running in one task are interrupted and executed by programs in other tasks. Therefore, simply measuring the time interval between the execution start address and the execution end address of a program being executed by a certain task will not provide the execution time of that task.

Therefore, there is a problem in that complicated measurements such as removing the execution time portion of a program in another task that has been interrupted from the measured value and processing of the results must be performed.

These two problems become more noticeable and more difficult as the number of programs used in the computer system and the number of programs to be measured at that time increases.

An object of the present invention is to easily perform simultaneous measurements on a large number of programs without having to consider the design structure of each program to be executed or the influence of interrupts caused by other tasks.
An object of the present invention is to provide a PU load distribution measuring device.

(Means for Solving the Problems) The CPU load distribution measuring device of the present invention includes: (A> a pulse generator that continuously generates sampling pulses at preset fixed time intervals; (B) the sampling pulses; (C) an execution address extraction unit that extracts the storage address of the instruction being executed by the computer system each time the computer system receives each of the instructions; (C) stores information indicating the storage area of each program executed by the computer system; a program storage area table storage unit, (D>in which program storage address area stored in the program storage area table storage unit is the storage address of the instruction being executed extracted by the execution address extraction unit); (E) a CPU load distribution calculation unit that totals the number of determinations made by the extraction address determination section for each program and calculates the ratio of the number of determinations of each program to the total number of extractions; (F) A CPU load distribution output section that outputs the calculation result of the CPU load distribution calculation section as a CPU load distribution to each program.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the CPU load distribution measuring device of the present invention.

In FIG. 1, the CPU load distribution measuring device 1 has five
, measure how the CPU load is distributed.

First, the pulse generator 1-1 of the CPU load distribution measuring device 1
generates sampling pulses continuously at preset fixed time intervals.

The execution address extractor 1-2 receives each of the sampling pulses and extracts the storage address of the instruction being executed sent from the computer system 2 each time it is received.

On the other hand, the program storage area table storage unit 1-3 stores information indicating the storage area of each program executed by the computer system 2.

FIG. 2 is an information configuration diagram of information indicating the storage area of each program stored in the program storage area table storage section 1-3.

As shown in FIG. 2, each program p, , p2 .・・・ ・・・ ・・・
・P l +...PM are the starting addresses L, , L2 . . . of the storage area, respectively.・・・・・・・・・L
t, ......LM, and the tail address H1 of each storage area.

H2+・・・・・・・・・Ht,・・・・・・・・・H
M is included as information indicating the storage area of each program.

If the storage address of the instruction being executed extracted by the execution address extraction unit 1-2 is address X, then the extraction address determination unit 1
-4 is p that satisfies L, ≦X≦H+ for this X.
t is searched and it is determined that this X is in the storage address area of program P1.

In response to this determination result, the CPU load distribution calculation unit 1-5 totals the number of determinations made by the extraction address determination unit 1-4 for each program, and calculates the ratio of the number of determinations of each program to the total number of extractions.

FIG. 3 is an information configuration diagram showing the judgment number information held in the CPU load distribution calculating section 1-5.

As shown in FIG. 3, the CPU load distribution calculation unit 1-5 calculates each program p, , p2 .・・・・・・・・・PI、・・・
・・・・・・For each PM, its program I
\ judgment number N,, N2.・・・・・・・・・N1.・
. . . N, and their total value N are held.

Judgment number N1 + N2 +...Nl,
......NM and N are each given O as an initial value, but each time the extraction address determination unit 1-4 determines that the storage address X is in the storage address area of the program P. Then, the CPU load distribution calculation unit 1-5 determines the number of times N1 of determination is made for the program and the total value N of the number of times of determination.
Add 1 to .

When the value of N exceeds a certain value, the CPLI load distribution calculation unit 1-5 calculates the ratio of the number of judgments of each program to the total number of extractions Nl/N, N2/N,...
...N, /N, ......Calculate N, /N.

The CPU load distribution output unit 1-6 calculates the ratio N, /N of the number of determinations of each program to the total number of extractions, which is the calculation result of the CPU load distribution calculation unit 1-5.

N2/N, ・・・・・・・・・N, /N, ・・・・・・
. . . Output N M / N to the CR, T display or printer as the CPU load distribution of the computer system 2 for each program.

〔Effect of the invention〕

As explained above, the CPU load distribution measuring device of the present invention uses a statistical method to measure the CPU load distribution for each program, which is an important element in evaluating the performance of a computer system. By increasing the number of address extractions, there is an advantage that the measurement accuracy can be improved without any limit.

On the other hand, the CPU load distribution measuring device of the present invention does not use the execution start address and execution end address of each program for measurement, but uses the storage address area assigned to each program. There is no need to consider the design structure of the program or the influence of interruptions caused by other tasks, and there is an advantage that simultaneous measurement of a large number of 10 grams can be easily performed.

Therefore, by using the CPU load distribution measuring device of the present invention, there is an effect that measurement of the CPU load distribution can be easily performed by requesting people who are not involved in program design.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the CPU load distribution measuring device of the present invention, FIG. 2 is an information configuration diagram of information indicating the storage area of each program, and FIG. 3 is an information configuration diagram showing determination frequency information. It is. l...CPU load distribution measuring device, 1-1...
...Pulse generation section, ■-2...Execution address extraction section, 1-3...Program storage area table storage section, 1-4...Extraction address determination section , ■-5・
...CPU load distribution calculation section, 1-6...
CPU load distribution output unit, 2... Computer system. -Representative Patent Attorney Shiroo Sound Diagram 1

Claims (1)

[Claims] (A) A pulse generator that continuously generates sampling pulses at preset fixed time intervals; (B) A computer system that receives each of the sampling pulses one by one. an execution address extraction unit that extracts a storage address of an instruction being executed; (C) a program storage area table storage unit that stores information indicating a storage area of each program executed by the computer system; (D) the execution address extraction unit. (E) an extraction address determination unit that determines in which program storage address area stored in the program storage area table storage unit the storage address of the instruction being executed extracted by the extraction address determination unit is located; (F) A CPU load distribution calculation unit that aggregates the number of determinations for each program for each program and calculates the ratio of the number of determinations for each program to the total number of extractions; A CPU load distribution measuring device comprising: a CPU load distribution output section that outputs a distribution.