JPH0764826A - Trace data collection management device - Google Patents

Abstract

(57) [Summary] [Purpose] Collect and manage a large amount of trace data at high speed. [Structure] When the trace data 1 is acquired by the trace data collection module 2, the data is compressed by the distributed processing by the trace data compression modules 3 to 5 capable of performing a plurality of operations and stored in the storage device 6.
The data compressed at this time is not always stored in time series, and since the size of the stored data is not constant, the time information and the size of the compressed data are stored together with the compressed data as additional information. . Next, the compressed data stored in the storage device 6 is taken out by the trace data non-compression module 7 and the additional information is removed. Further, it is uncompressed by the support tool, restored to the original data size, and reproduced as trace data 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trace data collection management device for collecting and managing a large amount of trace data such as when tracing communication data.

[0002]

2. Description of the Related Art A trace is a collection of data indicating an operating state and processing data at an arbitrary time in order to trace the execution of a program on a computer or the like.
By storing the collected trace data, many trace devices can confirm the state change of the target device and the change of the processing data in time series. The number of trace data that can be stored in the trace device depends on the storage capacity of the storage device and the length of the unit data.

The following three methods are mainly used to collect and manage the trace data in the conventional trace device. (1) Method of reducing the amount of trace data This is realized by thinning out the information of one trace data according to the capacity of the storage device. With this method, the number of data to be traced can be increased. That is, by lengthening the trace data collection period, it becomes easy to grasp the state transition of the trace target device.

(2) Method of reducing the number of trace data This is realized by limiting the number of trace data that can be stored without changing the amount of trace data. By this method,
The lack of information about status information can be resolved. (3) Method to temporarily stop the operation in the device until the storage area becomes free This is realized by temporarily stopping the operation in the device so as not to lose the trace data and waiting until the trace data can be stored in the storage area. To do. By this method, the necessary status information in the device can be sufficiently collected without losing the data on the way.

[0005]

[Problems to be Solved by the Invention] However, (1)
In this method, since the amount of information that can be read from the trace data is small, there may be a lack of information. Also,
In the method (2), since only a part of the trace data of the whole is stored, necessary trace data may not be included. Similarly, in the method (3), the operation timing at the time of collecting trace data may be significantly different from the operation timing of the device.

By the way, these problems naturally occur because the storage capacity is limited. If the storage capacity is infinite, such a problem does not occur. However, in reality, the storage capacity is limited. Therefore, a problem to be solved by the trace data collection management device is to collect a large amount of data at a high speed and without loss on the way by using limited resources (storage capacity). for that purpose,
Since the processing capacity of the trace processing device depends on the processing method, it is necessary to improve the processing method.

Further, in order to collect a large amount of data,
This depends largely on the structure of the trace data, but if the structure of the trace data is limited, the degree of freedom of the trace data may decrease. For example, if the trace data is digitized and coded to reduce the data size, the reliability is lost except for the information within the codeable range. In other words, it is desirable that the structure of the trace data is not limited and the data can be freely configured, but the data size becomes enormous. Therefore, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide trace data collection management capable of collecting and managing a large amount of trace data at high speed with a small storage capacity. To provide a device.

[0008]

In order to achieve the above object, the present invention provides a means for collecting trace data, a method of distributing the collected trace data to a plurality of trace data compression modules, and a compression process. A means for adding information on the time of receiving the data and the compression processing and storing it in the storage device; a means for reading the data stored in the storage device and decompressing the data while referring to the additional information to reproduce the trace data. It is characterized by having.

[0009]

According to the present invention, when trace data is collected, it is distributed to a plurality of trace data compression modules for compression processing, and information regarding the time when the data was received and the compression processing is added and stored in the storage device. To be done. The data stored in the storage device is read out and then decompressed with reference to the additional information to be reproduced as trace data.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a flow of trace data and a module configuration according to an embodiment of the present invention. 2 is shown in FIG.
3 is a flow chart showing a trace data collection module in FIG. 3, FIG. 3 is a flow chart showing a trace data compression module in FIG. 1, FIG. 4 is a flow chart showing a trace data non-compression module in FIG. 1, and FIG. It is an explanatory view showing an internal configuration of a storage device.

In FIG. 1, first, trace data 1
Are acquired by the trace data collection module 2.
At this time, the structure of the trace data 1 is not limited as long as it is a continuous data block (block). Here, as shown in FIG. 2, when the trace data collection module 2 acquires the trace data 1 (S1), it searches the trace data compression modules 3 to 5 for a waiting module (S2). Trace data compression module 3-5
If there is one in the waiting state, the trace data 1 is passed, and if there is no waiting state, the process waits (S3).

Since the trace data compression modules 3 to 5 can operate simultaneously, while the trace data 1 is not being processed as shown in FIG. 3, it waits for the trace data 1 to be sent from the trace data collection module 2. It is in a data acquisition waiting state (S4). In this way, the trace data compression modules 3-5
In the state in which the data can be received, the trace data collection module 2 can be notified of the waiting state.

Here, the trace data compression module 3
When any one of ~ 5 receives the trace data 1 (S
5) Compress the data with the support tool (S
6). This support tool shall be capable of completely restoring compressed data. Next, management information such as time data and size at the time of storage is added to the compressed data and stored in the storage device 6 (S7). As shown in FIG. 5, the storage device 6 stores n pieces of compressed trace data.

The data stored in the storage device 6 is not always stored in time series, and the size of one stored data is not constant. Therefore, as shown in FIG. 6, the time information and the compressed data size are stored together with the compressed data as additional information. Next, as shown in FIG. 1, the compressed data stored in the storage device 6 is taken out by the trace data non-compression module 7.

That is, the trace data non-compression module 7 sequentially reads the additional information of the compressed data stored in the storage device 6 as shown in FIG. 4 (S8), retrieves the time information, and retrieves the data from the oldest one. Is read (S9).
Next, the additional information is removed from the extracted stored data, the data is decompressed by the support tool to restore the original data size, and the trace data 8 is reproduced (S1).
0). By processing trace data in this way, even if there is a large amount of trace data, it is possible to speed up data collection by performing distributed processing with multiple trace data compression modules and to compress data. The storage capacity is substantially increased.

[0016]

As described above, according to the present invention, it is possible to speed up data collection by dispersing and compressing the collected trace data in a plurality of trace data compression modules. Furthermore, the capacity of the storage device is substantially increased by compressing the collected trace data and then storing it in the storage device. As a result, it is possible to obtain a trace data collection management device which has a small storage capacity and can collect and manage trace data at high speed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a data flow and a module configuration according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the trace data collection module of FIG.

FIG. 3 is a flowchart showing the trace data compression module of FIG.

4 is a flowchart showing the trace data uncompressed module of FIG. 1. FIG.

5 is an explanatory diagram showing an internal configuration of a storage device in FIG. 1. FIG.

6 is an explanatory diagram showing the content of data stored in the storage device of FIG. 5. FIG.

[Explanation of symbols]

 1 Trace data 2 Trace data collection module 3-5 Trace data compression module 6 Storage device 7 Trace data non-compression module 8 Trace data

Claims (1)

[Claims] 1. A storage device that collects trace data, compresses the collected trace data by distributing the trace data to a plurality of trace data compression modules, and adds information about the time when the data is received and the compression process. And a means for storing the data in the storage device, reading the data stored in the storage device, and decompressing the data while referring to the additional information to reproduce the trace data.