JPH01263845A - Performance monitor processing system for data processor - Google Patents

Abstract

PURPOSE:To ensure the performance monitor processing with no deterioration of the processing performance by using a performance monitor processing part prepared independently of a CPU to periodically monitor the executing state of the CPU. CONSTITUTION:In a performance monitor processing state, a performance monitor processing part 6 refers to the contents of an information means 3 periodically and independently of a CPU 1 and monitors the CPU 1. Then the part 6 performs a process for monitor of the performance based on the information acquired with said reference. The CPU 1 is not required to perform a process to inform it own performance to the part 6 since the part 6 refers to the means 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] This invention relates to a performance monitoring processing method for a data processing device that determines the performance of a program from its execution state.

The purpose is to monitor the performance of data processing equipment without reducing its processing performance.

In a data processing device comprising a central processing unit for executing processing and information means for holding information indicating whether the central processing unit is in a waiting state or an execution state, the central processing unit is monitored. Equipped with a performance monitoring processing unit,
The performance monitoring processing section is configured to periodically refer to the information means and use its contents to perform processing for monitoring the performance of the central processing unit.

[Industrial application field]

The present invention relates to a performance monitoring processing method for a data processing device, and more particularly to a performance monitoring processing method for a data processing device that determines the performance of a program from its execution state.

The performance of the central processing unit and input/output devices of data processing equipment
There is a method of calculating 10% by monitoring the execution status of the program in the central processing unit.

[Conventional technology]

FIG. 5 is an explanatory diagram of the prior art, and shows the transition between the execution state a (RUN) and the wait state (WAIT) when a central processing unit executes a certain program. T1. From Tt”rs
, T, to T, are in the running state, while 2 times T, to Tt, Ts to Ta, and Ts to T, are in the waiting state. For example, the central processing unit starts the disk, exits the execution state, and enters the wait state, and when processing by the disk ends, exits from the wait state and enters the execution state.

In this case, the time that the central processing unit was in the execution state (CPU time) from time T0 to T is (Tt To) + (T3 - Tt) + (Ts T
□), and the time spent in the waiting state is T, - (CPU time).

In conventional performance monitoring processing, the central processing unit uses its own CPU.
It was all about finding time.

That is, the central processing unit monitors the execution state of its own programs to determine the CPtJ time, and uses this as a measure of its own performance. Further, the central processing unit calculates the time spent in a waiting state from the CPU time, and uses this as a value indicating the performance of the input/output device and the auxiliary storage device.

[Problem to be solved by the invention]

According to the prior art described above, performance monitoring processing was performed by the central processing unit to be monitored.

That is, the central processing unit automatically calculates the times T o, T + ,
... was detected and the CPU time was obtained. For this reason, the following problems have arisen.

FIG. 6 is a diagram illustrating problems in the prior art, and schematically shows the processing state of the central processing unit when performance monitoring processing is performed.

In order to perform the above-mentioned performance monitoring process, when a certain program is executed, the central processing unit must perform a process of detecting the time (T o, T t, Ta,...) each time it enters the execution state. It is necessary to perform a process of detecting the time (Tt, Tt, Ts-...) each time the program executes the program and enters the wait state (finishes the execution state). Furthermore, each time the central processing unit finishes the execution state, it calculates the CPU time ((T
t To), (Tt ”re) + (Ts-TzL
(Tt To) + (Ts Tx＞→−(Ts
Ta).

) must be calculated and found. Therefore, as shown in Figure 6, if you want to monitor the performance of a certain normal process (program), it is necessary to insert the performance monitoring process into the normal process and execute both of them on the central processing unit. .

As a result, when performance monitoring is performed, a problem arises in that the time for the central processing unit to perform normal processing is reduced (performance is degraded). 7. Also, as the performance monitoring time becomes longer, C
There was a problem in that the amount of calculation for calculating PU time increased, causing overhead and causing a decrease in processing speed (deterioration in performance).

SUMMARY OF THE INVENTION An object of the present invention is to provide a performance monitoring processing method for a data processing apparatus that makes it easy to monitor the performance of the data processing apparatus without reducing its processing performance.

[Means to solve the problem]

FIG. 1 is a diagram illustrating the principle of the present invention and shows a data processing apparatus according to the present invention.

In FIG. 1, l is a central processing unit for executing processing. 2 is the program status word (hereinafter referred to as PSW)
, 3 is an information means (area) that holds information indicating whether the central processing bag W1 is in a waiting state or an execution state.
, 4 is a service processor, 5 is a microprocessing unit (hereinafter referred to as MPU), 6 is a performance monitoring processing unit that monitors the performance of the central processing unit 1, and 7 is a timer.

The information in the information means 3 is stored by the central processing unit that has determined whether it is in the waiting or running state and is updated to accurately indicate the state.

The performance monitoring processing unit 6 uses the central processing bag W during performance monitoring processing.
1, regularly refers to the information in the information means 3 and uses this information to perform processing for performance monitoring, regardless of the operation of the information means 3;
For this purpose, the performance monitoring processing section 6 is provided separately and independently of the central processing unit 1, and is configured to operate independently and in parallel with the central processing unit 1. For example, the performance monitoring processing unit 6 is provided outside the central processing unit 1 so as to be connected thereto, and is particularly configured to refer to the information means 3 in terms of hardware.

Note that other configurations will be described later.

[Effect]

FIG. 2 is an explanatory diagram of the operation of the present invention, and schematically shows the state of performance monitoring processing according to the present invention.

During performance monitoring processing, the performance monitoring processing section 6 periodically updates the information means 3 as shown in FIG. 2, independently of the central processing unit 1.
The central processing unit 1 is monitored by referring to the contents of . Then, the performance monitoring processing section 6 performs processing for performance monitoring using the information obtained by the reference. Also, since the performance monitoring processing section 6 refers to the information means 3, the central processing unit 1 can monitor its own state. There is no need to perform any processing other than notifying the performance monitoring processing unit 6 of the performance monitoring processing unit 6.

Therefore, even if performance monitoring is performed, as shown in FIG. 2, the time for the central processing unit to perform normal processing does not decrease, and overhead does not occur.

This makes it possible to monitor the performance of the data processing device without degrading its processing performance.

〔Example〕

As an embodiment of the present invention, the data processing apparatus shown in FIG. 1 will be described in detail.

The central processing unit 1 executes and operates a process (program).

The PSW 2 is for the central processing unit 1 to execute a program. The PSW 2 contains the instruction address of the instruction to be decoded and executed by the central processing unit 1, as well as the central processing bag W.
1.1 contains information indicating whether it is in a waiting state or in a running state.
W2 is the program status register (PSR)
The above information is stored in that one bit.

The information means 3 of this embodiment uses the 1 bit of the PSW (or psR) 2 as is.

This eliminates the need for new processing to provide the information means 3. Although the information means 3 is provided within the central processing unit 1, it does not necessarily need to be located within the central processing unit 1.

The service processor 4 manages the physical configuration of the entire data processing device, and the MPU 5 has functions for performing various processes for this purpose.

By providing the performance monitoring processing unit 6 in the PMUS, it can be considered that the service processor 4 is configured to be able to perform performance monitoring processing as a new function.

Note that the performance monitoring processing unit 6.

It may be provided outside the MPU 5 or outside the service processor 4 independently of these.

The performance monitoring processing unit 6 includes a timer 7 of the service processor 4.
is connected. This makes it possible to periodically refer to the information means 3 even if the user does not have a timer.

FIG. 3 is a diagram showing the state of performance monitoring processing.

In FIG. 3, the transition between the execution state and the waiting state of the central processing unit 1 is shown in the same way as in FIG.

The performance monitoring processing unit 6 monitors these changes in status.
Monitoring is repeated at constant time intervals (periods) t as indicated by arrows in the figure. That is, the contents of the information means 3 are updated at a certain period t.
By referring to.

The performance monitoring processing unit 6 controls the central processing unit 1 at that time.
Know the status of.

The period t is obtained by counting pulses from a timer 7, for example. For this.

For example, the performance monitoring processing unit 6 has a counter (or uses the counter of the MPU 5), and 0 period t is 1.

By specifying the length from outside the service processor 4, it is made variable. Zhou! 111 (
The shorter you set the performance monitoring process (details will be explained later).
accuracy can be improved.

The performance monitoring processing unit 6 performs processing for performance monitoring based on the contents of the information means 3 referred to at a constant period t, rather than at two times T or T.

FIG. 4 is a performance monitoring processing flow diagram, showing the flow of processing performed each time the performance monitoring processing unit 6 refers to the information means 3.

When instructed to perform performance monitoring, the performance monitoring processing section 6 refers to the information means 3 once, starts counting pulses from the timer 7, and thereafter, at a constant period t, performs pulse counting as shown in FIG. Repeat the process.

■ The performance monitoring processing unit 6 uses PSW2. In particular, it reads the contents of the bits that are the internal information means 3.

Store in register. For this purpose, the performance monitoring processing unit 6 has a register (or uses the register of the MPU 5).

■ The performance monitoring processing unit 6 reads the contents of the register (the information means 3
information) is in the running state (RUN, for example ° ”) or is in the waiting state a (WA IT.

For example, it is determined whether the value is "0").

(2) If the execution status is Li (RUN), the performance monitoring processing unit 6 increments the RUN counter by 1. Waiting state (WA)
IT), the content of the WAIT counter is set to +1. For this purpose, the performance monitoring processing unit 6 has two counters (or uses the counter of the MPU 5).

The performance monitoring processing unit 6 repeats the processes ``■'' and ``■'' every time one period t is reached.

When the end of performance monitoring is indicated, the performance monitoring processing unit 6
Perform the following processing.

First, the CPU time is determined using the RUN counter value. cpu time.

(RUN counter value) x period t It is required as. In addition, the time spent in the waiting state.

(WAIT counter value) X cycles 1llIt or.

These values, which may be determined as (time during which performance monitoring was performed) - CPU time, are output from an appropriate output device.

This allows the user to know the performance of the central processing unit 1, input/output devices, etc.

After this, the performance monitoring processing unit 6 controls the counter of the timer 7, R
Clear (reset) the bonds in the UN counter and WAIT counter.

〔Effect of the invention〕

As explained above, according to one aspect of the present invention, when performance monitoring processing of a data processing device is performed by monitoring the execution state of a program in a central processing unit, a performance monitoring processing section is provided separately from the central processing unit, By regularly monitoring the execution status of the central processing unit, the burden on the central processing unit for performance monitoring is reduced, and performance monitoring processing can be performed without reducing the processing performance of the data processing unit. It can be carried out.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle configuration of the present invention. FIG. 2 is an explanatory diagram of the operation of the present invention, and FIG. 3 is a diagram showing the state of performance monitoring processing. FIG. 4 is a flowchart of performance monitoring processing. FIG. 5 is an explanatory diagram of the prior art. FIG. 6 is a diagram explaining the problems of the prior art. 1 is the central processing unit, 2 is the program status word (
3 is an information means (area), 4 is a service processor, 5 is a microprocessing unit (MPU>
, 6 is a performance monitoring processing unit, and 7 is a timer. Patent applicant Pfn Co., Ltd.

Claims (1)

[Scope of Claims] A central processing unit (1) for executing processing; and information means (3) for holding information indicating whether the central processing unit (1) is in a waiting state or an execution state. A data processing device comprising a performance monitoring processing unit (6) that monitors the central processing unit (1), wherein the performance monitoring processing unit (6) periodically refers to the information means (3). , the central processing unit (1
) A performance monitoring processing method for a data processing device, characterized by performing processing for monitoring the performance of a data processing device.