JPS60238948A - Device for measuring processing time of computer system - Google Patents

Abstract

PURPOSE:To measure processing times of plural programs at once at the processing time measuring device of a computer system, by operating an address searching mechanism when instruction data is fetched from or written in a main storage address. CONSTITUTION:An indicator 13 is used for the start management of a task and updated when a task is implemented or terminated or task switching occurs. The address of the indicator 13 is set in control registers 11 and 12 when address searchng is performed. When the interruption of address searching occurs in an interruption routine 14, the destination address to be shifted is set in the routine 14. At an executing time collecting routine 15 a table 16, in which a task control block fetched from the indicator 13 is registered, is checked. Then the task number and its time are saved in an executing time data collecting table 17 and the saved executing time of the task to be measured is outputted by printing in the form of a list by means of a program 18.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an apparatus for evaluating the processing performance of a computer system.

[Prior art]

Conventionally, equipment for evaluating processing performance uses event tracing (ETRACE), which has a processing flow as shown in Figure 1.
There was (event trace (ETRACE) manual (
RM-J4066-A103), Mitsubishi Electric Computer System Production New Issue, P1 to P3).

1 is an event trace, 2 is a routine for collecting event data loaded from this event trace 1, 3 is an operating system that calls routine 2, 4
5 is an event data collection table that stores the events picked up in routine 2, and 5 is an event data printing task that prints out the contents of table 4.

When event trace 1 is activated by a request from an operator, event trace 1 executes routine 2 for collecting event data in the main memory (not shown). Called by the operating system 3 when an event such as an input/output device interrupt, task creation, task termination, task switching, program loading, or task rollout occurs, and the current time (m
5eo), event type, task number (No, ), and task control block number (No, ) are saved in table 4. The task control block contains various information for starting and managing tasks.

A task 5 for printing event data is activated in response to a request from the operator, and processing performance data such as event occurrence time, event type, task number, and task control block number is retrieved from table 4 and printed out.

Conventional event traces are structured as 5 or more, so it is possible to grasp all the dynamic processes of the system's online programs, but since the amount of trace data that can be accommodated is fixed, unnecessary program traces may be mixed in. However, the disadvantages are that the tracing time is short and the analysis is time consuming.

[Summary of the invention]

This invention was made to eliminate the drawbacks of the conventional ones as described above, and aims to provide a processing time measuring device that can measure the processing time of multiple programs at once using an address search mechanism. .

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Second
In the figure, 11. +2 is a control register used in address search, 18 is an indicator set with a task control block number used in task startup management, 14 is an interrupt routine, and 15 measures execution time of multiple programs. A routine for collecting execution time data; 16 is a table in which task numbers to be measured are registered for use in routine 15; 17 is a table for saving execution time data used in routine 15;
18 is a program that extracts the execution time of the task to be measured from the table 17 and prints it out.

The address search mechanism used in this invention is the address search mechanism used by the operating system when an instruction data retrieval operation or data write operation is performed for the main memory address specified by the control register 11.12. This function generates an interrupt to notify the specified program processing.

The execution time of a task is the time from when a certain task operates until another task switching occurs, or the time until the task ends without task switching occurring. The indicator 18 is used in task activation management and is updated when a task is created, terminated, or task switched.

In operation, an address search is first performed on the address of the indicator 18, and the address of the indicator 13 is set in the control registers 11 and 12. Further, in the interrupt routine 14, a destination address to which to move when an address search interrupt occurs is set in the routine 15.

Assuming that a task is created, terminated, or task switched, an address search interrupt is generated from the operating system, and the execution time collection routine 15 is called via the 5-interrupt routine 14. In routine 15, the task control block is extracted from the indicator 18, the registered table 16 is checked, and if there is a related task number, the task number is
o, and the time at that point (m5eo) are saved in the table 17 for collecting execution time data. If there is no related task number, the routine returns immediately from routine 15. The execution times of the tasks to be measured saved in the table 17 are printed out in a list format by the program 18.

By the way, in the above embodiment, the case of measuring the execution time of multiple programs was explained, but the same effect as in the above embodiment can also be obtained when measuring the number of supervisor call commands issued, the number of discrete operations, and the number of disk writes for multiple programs. play.

〔Effect of the invention〕

As described above, according to the present invention, the target of performance measurement is expanded to include a plurality of programs constituting one function, so there is an effect that the performance can be evaluated for each function of the system.

[Brief explanation of drawings]

Figure 1 is a flowchart of the processing of a conventional processing time measuring device;
The figure is a flowchart of processing of a processing time measuring device according to an embodiment of the present invention. 2.14.15...routine, 4,16.17...
Tables, 11.12... Control registers, 18...
Indicator, 18...program. Patent applicant Mitsubishi Electric Corporation Figure 1

Claims (1)

[Claims] An indicator for setting a task control block that manages the activation of tasks in a computer system, a control register for setting the contents of the above-mentioned indicators according to the activation of an address search, and a control register for setting a task control block that manages the activation of tasks in a computer system. an address search mechanism that generates an interrupt for the address search by the operating system of this computer system in response to an access to the storage memory and notifies specified program processing; A processing time measuring device for a computer system, which starts the address search function to measure the execution time of each of a plurality of programs related to the processing function.