JPS63191247A - Log-out processing system - Google Patents

Abstract

PURPOSE:To improve the analyzing efficiency of the log data by collecting selectively the log data after deciding whether the log data stored in a block is valid or not as the log data. CONSTITUTION:The log data are collected selectively in a log-out process based on the contents of the data on a data storing area where the log data are collected. In this log-out process, a block dividing/loading means means 1 divides a data storing area 10 where the log data are collected into plural blocks to load the data for each block. A valid data selection means 2 refers to a part of the data loaded by the means 1 to decide the validity of the data. Then a block data collection means 3 collects the data on the blocks decided valid by the means 2 as the log data. As a result, the undesired are never mixed into the log data and the log data can be easily analyzed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a logout processing method in an information processing device, and in particular to a method for selectively collecting log data according to the content of data in a data storage area from which log data is collected. Regarding the logout processing method to be collected.

[Conventional technology]

In general, logout processing is performed in an information processing apparatus for the purpose of collecting data in order to preserve analysis data of the cause of the failure when a logout factor such as a device failure or a failure in program operation occurs.

Conventionally, this type of logout processing method performs logout processing by collecting log data from a predetermined data storage area in accordance with the logout factor, regardless of its contents.

[Problem that the invention seeks to solve]

The conventional logout processing method described above always collects a certain amount of log data from the data storage area regardless of the presence or absence of valid information. When collecting log data, there is a drawback that the range of log data to be collected is limited due to capacity limitations of log files that store log data.

Furthermore, since unnecessary data is mixed in a large amount of collected log data, there is a drawback that it takes time to analyze the log data.

In view of the above-mentioned points, an object of the present invention is to provide a logout processing method that reduces the amount of collected log data by selectively collecting data as log data in the 11th block according to its content. It's about doing.

[Means for solving problems]

The logout processing method of the present invention includes a block division loading means that divides a data storage area for which log data is collected into one or more blocks and loads data in block units, and a block division loading means. valid data selection means that refers to a part of the loaded data and determines the validity of this data; and block data collection means that collects data of blocks determined to be valid by the valid data selection means as log data. has.

[Effect]

In the logout processing method of the present invention, the block division loading means divides the data storage area from which log data is collected into one
The data is divided into one or more blocks and loaded in block units, and the valid data selection means judges the validity of the data by referring to a part of the data loaded by the block division loading means, and collects the block data. The means collects data of blocks determined to be valid by the valid data selection means as log data.

[Example] 7 Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. The logout processing method of this embodiment is comprised of block division loading means 1, valid data selection means 2, and block data collection means 3.

The block division loading means 1 divides the data storage area 1O from which log data is collected during logout processing into one or more blocks, and loads the data into the main memory (not shown) in units of blocks. In the logout processing method of this embodiment, the control information on the data storage area IO is loaded into the main memory in blocks of 32 bytes each.

The valid data selection means 2 refers to information on a part of the data loaded onto the main memory by the block division loading means 1 and determines the validity of this data. In the logout processing method of this embodiment, the 17th byte from the beginning of each block! j [The status representing the control information in the block is placed in 4 bits, and these 4 bits are all '0''
When , it indicates that the control information for that block is not used on the information processing device, so it is not subject to log collection.
When one of these four bits is "1", the state represented by that bit indicates that the control information in the block is used in information processing and has meaning. Hereinafter, data that is not subject to log collection will be referred to as invalid data, and data that is subject to log collection will be referred to as valid data.

Furthermore, if it can be specified that the log data collection conditions required when a logout factor occurs, it is possible to analyze the data in advance according to the collection conditions and select only the necessary data. , in the logout processing method of this embodiment, from the viewpoint of processing speed, etc., the 17th byte of the block is simply stored! It is determined whether or not to collect log data by simply determining whether all 114 bits are O'.

When the data of a block is determined to be valid by the valid data selection means 2, the block data collection means 3 collects the data of this block as log data and stores it in the log file 20.

Next, the operation of the logout processing method of this embodiment configured as described above will be explained. Here, with reference to FIG. 2, we will discuss the log collection of control information in an information processing device that has 8192 pieces of control information indicating the status of the information processing device in the data storage area IO, with 32 bytes as one block. will be explained as an example.

When the information processing device is in operation, 8192 pieces of control information #1
A part of the data storage area 10 for storing ~#8192 is used, but the area to be used cannot be specified in advance.

Now, when logout processing is started due to a factor such as the occurrence of a failure, the block division loading means l loads the data storage area 1.
Control information #1 on the first block of 0 is loaded onto the main memory. Next, the valid data selection means 2 selects the control information # loaded onto the main memory by the block division loading means 1.
Data “04H”C of 17th byte of 32 bytes of I
The subscript H indicates a hexadecimal number. (Same below) tests whether the 4 bits of the class are 11" or "o",
Since they are all "0", it is determined that the control information #l is invalid data. Subsequently, the block data collection means 3
When the control information #1 is determined to be invalid data by the valid data selection means 2, the block of control information #1 is discarded without being stored in the log file 20.

When the processing in the block data collecting means 3 is completed, the block dividing means 1 is activated again, and the control information #2 on the next block in the data storage area IO is loaded onto the main memory. Next, the valid data selection means 2 selects 3 of the control information #2.
Test whether the 4 bits of the 17th byte data "lOH" in the 2 bytes are "1" or 0, and all "
0'', the control information #2 is determined to be valid data.Next, the block data collection means 3 determines that the control information #2 is valid data by the valid data selection means 2. In response, the control information #2 is collected as log data and stored in the log file 20 together with information (address, etc.) indicating the block number of the control information #2.

Note that adding additional information such as an address as part of log data is a common practice in order to make log data easier to read.

Thereafter, similarly, blocks of control information #3 to #8192 are sequentially loaded onto the main memory by the block division loading means 1, and blocks of control information #3 to #8192 are sequentially loaded onto the main memory by the block division loading means 2.
Block #8192 is sequentially tested, and control information #3 to #8192 are collected as log data by the block data collecting means 3 and selectively stored in the log file 20. Then, when the control information on the data storage area 10 is exhausted, the operation of the logout processing method of this embodiment is ended.

As a result of the above, 'tL+'', '42++', 'C
17 of control information #1 to #8192, such as "o11"
Byte data! Control information #2 in which 14 bits are not “0”. #8190. Blocks such as #8192 are selected and each control information #2. #8190.98192
The data is collected as log data together with information indicating the block number (address, etc.) and stored in the log file 20.

〔Effect of the invention〕

As explained above, the present invention reads data block by block when collecting log data, determines whether or not the data in the block is valid as log data based on a part of the data in a predetermined method, and logs the log data. By selectively collecting data, the amount of collected log data is reduced, and since only valid data is collected as log data, log data analysis efficiency is improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the logout processing method of the present invention, and FIG. 2 is a diagram showing an example of the operation of the logout processing method of the present embodiment. In the figure, 1... block division loading means, 2... valid data selection means, 3... block data collection means, 0... data storage area, 20... log file.

Claims (1)

[Scope of Claims] Block division loading means for dividing a data storage area from which log data is collected into one or more blocks and loading data in units of blocks; and data loaded by the block division loading means. valid data selection means for determining the validity of this data by referring to a part of the data; and block data collection means for collecting data of blocks determined to be valid by the valid data selection means as log data. A logout processing method characterized by: