JPH04286035A - Process tracing system - Google Patents

Abstract

PURPOSE:To obtain basic data of various kinds of performance problems by tracing the state transition situation of a process in the middle of an operation in a system. CONSTITUTION:A process execution control means 6 operates a trace information recording means 7 at the time of the state transition of the process of a trace object. As a result, the operation situation of the object process is recorded in a trace data table 8. A system user uses a data editing output means 11 and obtains an editing result. The object process is designated and a trace condition is set by using a trace setting means 1. Thus, minute data noticing the state transition of the process is obtained and it is effective for the improvement of response time and that of a system processing.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process tracing method in a computer system.

0002

2. Description of the Related Art Conventionally, a process tracing method for a computer system has adopted a method of setting a measurement point in a logical space in which a process operates, and operating an information gathering function when passing through that address.

0003

[Problems to be Solved by the Invention] In the process tracing method described above, in which measurement points are set in the logical space in which the process operates, differences in the validity of trace data tend to occur depending on the setting of the measurement points, and The drawback is that settings cannot be made unless the process operation locus is understood. In addition, since the measurement points only pass when the target process is in the execution state on the central processing unit, it is difficult to know the state transition of the target process, and the obtained trace data can be used to improve the performance of online transaction processing, Another disadvantage is that it is difficult to use it as data for improving overall performance.

0004

[Means for Solving the Problems] The process tracing method of the present invention includes a trace setting means for obtaining trace target process names and trace conditions from a system user, and setting trace management information, and each process in the system. a process initialization means that executes the initialization processing of the trace target process from the trace management information and activates a trace start means when initializing the target process; a trace start means for performing settings; and a process execution control means for performing state transition processing during process operation and activating a trace information recording means when the process to be traced makes a state transition that matches the trace condition. , a trace information recording means for recording trace data at that point each time it is activated;
A process termination means that executes termination processing for each process, and activates a trace termination means when the trace target process terminates, a trace termination means that updates trace management information, and reads recorded trace data.
and data editing/output means for editing and outputting the contents to a printing device or a display device.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows an embodiment of the present invention.

In the figure, 1 is a trace setting means, 2 is a trace management table, 3 is a process initialization means, 4 is a trace start means, 5 is a process control block, 6 is a process execution control means, 7 is a trace information recording means, 8 is a trace data table, 9 is a process termination means, 10 is a trace termination means,
Reference numeral 11 indicates a data editing and outputting means, 12 a printing device, and 13 a display device.

FIG. 2 is a diagram showing the state transition of a process.

FIG. 3 is a diagram showing an embodiment of the process control block.

First, the operation of the present invention will be explained with reference to FIGS. 1 and 2. Generally, in a multi-programming system, user jobs submitted to the system are
It is managed by the functions of the operating system as a set of processes, which are the minimum unit of processing. The states to which this process transitions can generally be classified into the four states shown in FIG. In other words, a running state where a central processing unit is assigned to the process, an executable state where the process is waiting for a central processing unit to be assigned, an execution waiting state where the process is waiting for a specific event to occur, and an execution pending state where execution is prohibited for some reason. state.

[0011] A system user specifies, to the trace setting means 1, the name of a process to be traced and trace conditions. For the process name, if you know the value used internally by the system, specify that value directly; otherwise, specify it in the form of a job name or load module name. The trace condition specifies the state in which the process transitions into which trace data is to be recorded. The trace setting means 1 records the specified contents in the trace management table 2.

[0012] The process initialization means 3 initializes data related to processes operating within the system. is trace start means 4
Start. The trace starting means 4 sets a value in a predetermined area added in the process control block 5 created as an information storage area for each process. After the initialization process, the process starts operating within the system.

[0013] A process operates within a system by
This corresponds to the transition between the four states, the execution state, the executable state, the execution standby state, and the execution pending state, by the process execution control means 6. The process execution control means 6 records process-related information at that time in the process control block 5 every time each process in the system changes state. At this time, if a predetermined area in the process control block 5 described above is set to be traced and the state transition at that time matches the trace condition, the trace information recording means 7 is activated. The activated trace information recording means 7 records the process name, time, logical address under execution, and state to which the process is to be transitioned in the trace data table 8. By this operation, data of the trace target process is recorded in the trace data table 8 every time a state transition that matches the trace condition occurs.

At the end of the process, the process end means 9 operates to release the resources necessary for the process operation, but at this time, the trace management table 2 is referred to, and if the process to be traced has ended, starts the trace termination means 10. The trace termination means 10 updates the contents of the trace management table 2 and records that the target process has terminated.

The data editing output means 11 edits the trace management table 2 and the trace data table 8 according to instructions from the system user.
reads the value of , edits the state transition of the process to be traced, and displays
Output to. System users use the output results as data for solving online performance problems and system performance problems. The process control block shown in FIG. 3 is created for each process in the system. In the trace setting area, there are a bit a indicating whether or not a process is to be traced, and bits b to e indicating trace conditions, and their values are set when each process is initialized.

[0016]

[Effects of the Invention] As explained above, the present invention collects trace data every time the process to be traced changes state, thereby making it possible to collect data without knowing the operation trajectory of the target process in the logical space. There is an effect.

[0017] Furthermore, it is possible to easily know the state transition of the target process, and the trace data can be used as data for performance improvement.

[0018] Furthermore, since the settings of trace conditions can be adjusted, it is possible to obtain data with the precision required.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing the state transition of a process.

FIG. 3 shows an example of a process control block.

[Explanation of symbols]

1 Trace setting means 2 Trace management table 3 Process initialization means 4 Trace start means 5 Process control block 6 Process execution control means 7 Trace information recording means 8 Trace data table 9 Process termination means 10 Trace termination means 11 Data editing output means 12 Printing device 13 Display device

Claims (1)

[Claims] [Claim 1] In an operating system that employs a multiple programming method, tracing is performed by obtaining the name of the process to be traced and tracing conditions from the system user, targeting a process that is a processing unit when operating within the system. A trace setting means for setting management information, initializing each process in the system, knowing the process to be traced from the trace management information, and at the time of initializing the target process. A process initialization means that starts a trace start means, a trace start means that performs initial settings for tracing, and a state transition process that performs state transition processing during process operation so that the process to be traced matches the trace condition. When doing so, the process execution control means starts the trace information recording means, the trace information recording means records the trace data at that time every time it is started, and the trace information recording means executes termination processing of each process. A process termination means that activates a trace termination means upon termination, a trace termination means that updates trace management information, and data that reads the recorded trace data and edits and outputs the contents to a printing device or display device. A process tracing method characterized by comprising an editing output means.