JP2019117662A - Information processing device, failure detection method, and program therefor - Google Patents

Abstract

To detect a failure of a connection device having the failure from the beginning.SOLUTION: According to an aspect of this invention, an information processing device performs processing for detecting a connection device connected to an own device and processing for initializing the connection device in accordance with the supply of power. The information processing device includes: monitoring time determination means for storing monitoring time information obtained by associating the type of the connection device with an initialization monitoring time corresponding to an execution time of processing for initializing the connection device before performing processing for detecting the connection device, and determining an initialization monitoring time to the connected connection device on the basis of the monitoring time information; and failure detection means for detecting a failure of the connected connection device on the basis of the initialization monitoring time determined by the monitoring time determination means, and outputting information about the detected failure.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technology for detecting a failure in an information processing apparatus.

  Various related techniques for detecting a failure or abnormality of an information processing apparatus are known.

  For example, Patent Document 1 discloses an example of an abnormality inspection method of a computer device. According to the abnormality detection method of Patent Document 1, first, the activation time from power on of the computer device to the completion of OS (Operating System) activation processing is measured, stored and accumulated. Second, in the abnormality detection method, it is determined that an abnormality occurs when the activation time exceeds a predetermined time, or when the deviation of the accumulated activation time exceeds a predetermined range.

  However, such an abnormality inspection method has a problem that the accuracy in abnormality detection is low. The abnormality inspection method detects an abnormality based on the startup time of the entire computer device. At this time, for example, even if the diagnosis execution time of any hardware is long, if the diagnosis execution time of most other hardware components is shorter than the reference value, the diagnosis execution time of the entire device is within the normal range It becomes. In this case, there is a risk that hardware failures whose diagnosis execution time is long may be concealed.

  Patent Document 2 describes a technique for solving such a problem. The failure prediction device described in Patent Document 2 includes a measuring unit and a reporting unit. The measuring means measures, for each of the hardware components contained in the electronic device, the execution time required for the diagnosis. The diagnosis is a diagnosis by a power on self test (POST) execution unit. The reporting means reports an abnormality when the execution time of any hardware component exceeds a reference value set for the hardware component.

  The POST execution unit is disclosed, for example, in Patent Document 3 as a POST processing unit. As disclosed in Patent Document 3, the POST processing unit sequentially executes processing called post task (Post Task), and sequentially executes checks of various devices one by one by each post task.

JP, 2012-058782, A JP, 2014-021577, A JP, 2006-190061, A

  However, in the technique described in Patent Document 2 described above, when the failure can not be detected in the connected device (hardware component) that has failed from the beginning (in particular, failure that causes intermittent operation abnormality) There is a problem that there is.

  The reason is that the reference value used by the reporting means is based on the start-up time of the connected device measured by the measuring means at the first start-up.

  An object of the present invention is to provide an information processing apparatus for detecting a failure of a connected device which has failed from the beginning, a failure prediction method, and a program therefor.

  An information processing apparatus according to an aspect of the present invention is an information processing apparatus that performs processing of detecting a connected device connected to the own device and processing of initializing the connected device in response to power-on. Monitoring time information in which the type of the connected device and the initialization monitoring time corresponding to the execution time of the process of initializing the connected device are stored before performing the process of detecting the connected device Monitoring time determination means for determining an initialization monitoring time for the connected device based on the monitoring time information; and the connection based on the initialization monitoring time determined by the monitoring time determination means. Failure detection means for detecting a failure of the connected device and outputting information on the detected failure.

  An information processing system according to an aspect of the present invention is an information processing system that performs processing of detecting a connected device connected to an information processing apparatus and processing of initializing the connected device in response to power on. Before performing the process of detecting the connected device, monitoring time information in which the type of the connected device and the initialization monitoring time corresponding to the execution time of the process of initializing the connected device are associated with each other. Monitoring time determining means for determining an initialization monitoring time for the connected device based on the monitoring time information, and the connection based on the initialization monitoring time determined by the monitoring time determining means. An information processing apparatus including: failure detection means for detecting a failure of a connected device and outputting information related to the detected failure; and a maintenance server for outputting information related to the failure to a user , Including the.

  A failure detection method according to an aspect of the present invention is a method of performing processing of detecting a connected device connected to an information processing apparatus and processing of initializing the connected device in response to power-on. Monitoring time information in which the type of the connected device and the initialization monitoring time corresponding to the execution time of the process of initializing the connected device are stored before performing the process of detecting the connected device; The initialization monitoring time for the connected device is determined based on the monitoring time information, and a failure of the connected device is detected based on the determined initialization monitoring time. Output information about the failure.

  A program according to an aspect of the present invention is a program that causes a computer to execute a process of detecting a connected device connected to an information processing apparatus and a process of initializing the connected device in response to power-on. Monitoring time information in which the type of the connected device and the initialization monitoring time corresponding to the execution time of the process of initializing the connected device are stored before performing the process of detecting the connected device The initialization monitoring time for the connected device is determined based on the monitoring time information, and a failure of the connected device is detected and detected based on the determined initialization monitoring time. The computer executes processing for outputting information on the failure.

  The present invention is advantageous in that it is possible to detect a failure in a connected device that has originally failed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows an example of a structure of the information processing system containing the information processing apparatus which concerns on the 1st Embodiment of this invention. It is a block diagram showing an example of the hardware constitutions of the computer which realizes the information processor concerning a 1st and 2nd embodiment. It is a block diagram which shows an example of a structure of the monitoring time determination part in 1st and 2 embodiment. It is a figure which shows an example of the monitoring time setting table in 1st and 2 embodiment. It is a flowchart which shows an example of operation | movement of 1st Embodiment. It is a block diagram showing composition of an information processor concerning a 2nd embodiment of the present invention.

  DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings. In the respective embodiments described in the drawings and the specification, the same components are denoted by the same reference numerals, and the description will be appropriately omitted.

<<< First Embodiment >>>
FIG. 1 is a block diagram showing the configuration of an information processing system 100 including an information processing apparatus 110 according to the first embodiment of the present invention. As shown in FIG. 1, the information processing system 100 according to the present embodiment includes an information processing apparatus 110 and a maintenance server 180.

  The information processing apparatus 110 includes a power input unit 20, a BIOS (Basic Input Output System) 50, and a BMC (Baseboard Management Controller) 40.

  Each component included in the information processing apparatus 110 illustrated in FIG. 1 may be a circuit in hardware, a module included in a microchip, or a component divided into functional units of a computer device. Here, the components shown in FIG. 1 will be described as components divided into functional units of the computer apparatus.

  FIG. 2 is a diagram showing a hardware configuration of a computer 700 for realizing the information processing apparatus 110 in the present embodiment.

  As shown in FIG. 2, the computer 700 includes a processor 701, a memory 702, a BMC 40, an input unit 704, an output unit 705, a communication unit 706, a connection circuit 707, and a connection device 708. Furthermore, the computer 700 includes a recording medium (or storage medium) 709 supplied from the outside. For example, the recording medium 709 is a non-volatile recording medium (non-temporary recording medium) which stores information non-temporarily. The recording medium 709 may be a temporary recording medium that holds information as a signal.

  The processor 701 operates the BIOS 50 and an OS (not shown) to control the overall operation of the computer 700. For example, the processor 701 reads the program or data from the recording medium 709 attached to the connection device 708 connected via the connection circuit 707, and writes the read program or data to the memory 702. Here, the program is, for example, a program for causing the computer 700 to execute the operation of the flowchart shown in FIG. 5 described later.

  Then, the processor 701 executes various processes as the post task 150 and the monitoring time determination unit 160 of the information processing apparatus 110 shown in FIG. 1 according to the read program and based on the read data.

  The processor 701 may download the program and its data to the memory 702 from an external computer (not shown) connected to a communication network (not shown).

  The memory 702 stores the program and its data. For example, the memory 702 may store a monitoring time setting table 163 described later.

  The input unit 704 receives an input of an operation by an operator and an input of information from the outside. The devices used for the input operation are, for example, a mouse, a keyboard, built-in key buttons, a touch panel, and the like.

  The output unit 705 is realized by, for example, a display. The output unit 705 is used, for example, for an input request to an operator by a graphical user interface (GUI), an output presentation to the operator, and the like.

  The communication unit 706 implements an interface with the outside. The communication unit 706 may be included as part of the monitoring time determination unit 160.

  The connection circuit 707 is a circuit that connects the connection device 708. The computer 700 may have a plurality of connection circuits 707 corresponding to each of the plurality of connection devices 708.

  The connection device 708 is, for example, a hard disk drive, an optical disk drive, a flexible disk drive, a magnetic optical disk drive, or a semiconductor storage device such as a flash memory.

  A recording medium 709 recording the above-described program code may be installed in the connection device 708 and supplied to the computer 700. In this case, the processor 701 may read and execute the code of the program stored in the recording medium 709. Alternatively, the processor 701 may store the code of the program stored in the storage medium 709 in the memory 702. That is, the present embodiment includes an embodiment of a recording medium 709 that temporarily or non-temporarily stores the program (software) that the computer 700 (processor 701) executes. Incidentally, a recording medium for storing information non-temporarily is also called a non-volatile recording medium.

  As described above, each component of the functional unit of the information processing apparatus 110 illustrated in FIG. 1 is realized by the computer 700 having the hardware configuration illustrated in FIG. 2.

  Returning to FIG. 1, each component of the information processing apparatus 110 will be described.

=== Power input unit 20 ===
The power input unit 20 activates the information processing apparatus 110. For example, the power input unit 20 turns on the power of the information processing apparatus 110 and transmits the power input information 820 to the BIOS 50.

=== BIOS 50 ===
The BIOS 50 includes a post task 150 corresponding to each of the connection circuits 707, and a monitoring time determination unit 160.

  The BIOS 50 executes an initialization process of the information processing apparatus 110 based on the fact that the information processing apparatus 110 is activated at 120 (for example, having received the power input information 820). At this time, the BIOS 50 executes each of the post tasks 150. Furthermore, the BIOS 50 executes processing by the monitoring time determination unit 160 for each post task 150.

=== Post task 150 ===
Each post task 150 executes initialization processing of a connection circuit 707 corresponding to the post task 150 and a connected device 708 connected to the connection circuit 707.

=== Monitoring time determination unit 160 ===
FIG. 3 is a diagram showing an example of the configuration of the monitoring time determination unit 160. As shown in FIG. As shown in FIG. 3, the monitoring time determination unit 160 includes a type confirmation unit 161, a correspondence determination unit 162, and a monitoring time setting table (also called monitoring time information) 163.

  FIG. 4 is a diagram showing an example of the monitoring time setting table 163. As shown in FIG. As shown in FIG. 4, the monitoring time setting table 163 includes the connected device type and the initialization monitoring time in association with each other.

  For example, the monitoring time setting table 163 may be stored in advance in either the memory 702 shown in FIG. 2 or the connection device 708 connected to the connection circuit 707 shown in FIG. Further, the monitoring time determination unit 160 may obtain the monitoring time setting table 163 input by the operator via the input unit 704 shown in FIG. Further, the monitoring time determination unit 160 may receive the monitoring time setting table 163 from a device (not shown) via the communication unit 706 shown in FIG. Also, the monitoring time determination unit 160 may obtain the monitoring time setting table 163 recorded on the recording medium 709 installed in the connection device 708 via the connection circuit 707 shown in FIG.

  The monitoring time determination unit 160 confirms, for each post task 150, the presence of the connection device 708. If the connected device 708 exists, the type confirmation unit 161 of the monitoring time determination unit 160 detects the type of the connected device 708. Next, the correspondence determination unit 162 of the monitoring time determination unit 160 determines whether the connected device type that matches the type is included in the monitoring time setting table 163. When the connected device type that matches the type is included in the monitoring time setting table 163, the monitoring time determination unit 160 determines that the initialization monitoring time corresponding to the connected device type is the initialization monitoring time 860 of the connected device 708. Decide as.

=== BMC40 ===
The BMC 40 includes a failure detection unit 140 and a log storage unit 190.

=== Failure detection unit 140 ===
The failure detection unit 140 monitors whether or not the execution time of the post task 150 for the connected device 708 exceeds the initialization monitoring time 860 corresponding to the connected device 708. When the execution time exceeds the initialization monitoring time 860, the failure detection unit 140 detects that at least one of the connection device 708 and the connection circuit 707 connecting the connection device 708 is a failure.

  The failure detection unit 140 outputs information on the detected failure as failure information 840 to the log storage unit 190.

=== Log storage unit 190 ===
The log storage unit 190 stores the failure information 840 as a log. The failure information 840 includes, for example, the time when the failure was detected, the identifier of the connection device 708 corresponding to the failure, and the identifier of the connection circuit 707. The failure information 840 may further include arbitrary information such as an initialization monitoring time 860 corresponding to the failure and an execution time of the post task 150.

  The BMC 40 may transmit the failure information 840 stored in the log storage unit 190 to the maintenance server 180.

  The above is the description of the components of the functional unit of the information processing apparatus 110.

=== Maintenance server 180 ===
The maintenance server 180 outputs the failure information 840 to the user. As a result, the user can obtain information on failure (intermittent failure or sign of fixed failure).

  Next, the operation of this embodiment will be described in detail with reference to the drawings.

FIG. 5 is a flowchart showing the operation of the monitoring time determination unit 160 of this embodiment. The processing according to this flowchart may be executed based on program control by the processor 701 described above. In addition, step names of processing are described by symbols as in S601.
The monitoring time determination unit 160 of the BIOS 50 starts the operation of the flowchart illustrated in FIG. 5 when each of the post tasks 150 is started.

  The monitoring time determination unit 160 confirms whether there is a connected device 708 corresponding to the post task 150 (step S601). If the connected device 708 does not exist (NO in S601), the process ends.

  If the connected device 708 exists (YES in step S601), the type confirmation unit 161 of the monitoring time determination unit 160 detects the type of the connected device 708 (step S602).

  Next, the correspondence determination unit 162 of the monitoring time determination unit 160 determines whether or not the connected device type that matches the type is included in the monitoring time setting table 163 (step S603).

  When the connected device type that matches the type is included in the monitoring time setting table 163 (YES in step S603), the monitoring time determination unit 160 determines the connected monitoring time corresponding to the connected device type 708. It is determined as the initialization monitoring time 860 of (step S604).

  If the connected device type that matches the type is not included in the monitoring time setting table 163 (“NO” determination in step S 603) (NO in step S 603), the monitoring time determination unit 160 determines “NO” for the connected device 708 It is further determined whether a predetermined number of times (for example, three times) has been reached (step S605). If the “No” determination has not reached the predetermined number of times (NO in step S605), the process returns to step S602.

  If the “No” determination has reached the predetermined number of times (YES in step S605), the monitoring time determination unit 160 determines the specified value as the initialization monitoring time 860 of the connected device 708 (step S606). The specified value indicates that, for example, the connected device type in the monitoring time setting table 163 is "not applicable (" the type of the connected device 708 is not included in the connected device type in the monitoring time setting table 163 "). May be the value of the initialization monitoring time corresponding to That is, the specified value is not the initialization monitoring time corresponding to the type of the connected device 708.

  Next, the BIOS 50 outputs the initialization monitoring time 860 to the BMC 40 (step S607).

  Note that, following step S607, the post task 150 executes the initialization process of the connected device 708. The BIOS 50 performs all post tasks 150 as described above.

  With the above configuration, the information processing apparatus 110 according to the present embodiment detects a failure of the connection device 708 in a failure state in which an abnormality occurs intermittently from the beginning. In other words, the information processing apparatus 110 according to the present embodiment detects a sign of fixed failure of the connection device 708 in a failure state in which an abnormality occurs intermittently from the beginning. For example, in the connection device 708 which may cause a fixed failure, the initialization time tends to be delayed due to a retry process or the like (during a failure in which an abnormality occurs intermittently). Therefore, when the execution time of the initialization process by the post task 150 exceeds the initialization monitoring time 860, it can be determined that there is a sign of fixed failure.

  Compared to the present embodiment, in the related art, when the determination based on the post task execution time of the BIOS is used as the failure determination means of the connected device, there are the following problems. In the related art, when the connected device is started for the first time, the execution time of the post task at the time of the first start is stored as the initialization monitoring time on the assumption that the connected device is not broken. Then, from the next activation of the server device, the execution time of the post task of the connected device is compared with the initialization monitoring time, and when the difference is outside the range of the specified value, it is determined to be a failure. Therefore, the failure determination can not be correctly performed for the connected devices in a failure state in which an abnormality occurs intermittently from the beginning.

  The first effect in the above-described embodiment is that it is possible to detect a failure of the connection device 708 which has originally failed.

  The reason is that the following configuration is included. First, the monitoring time determination unit 160 of the BIOS 50 determines the initialization monitoring time 860 for each post task 150 based on the monitoring time setting table 163. Second, the BMC 40 detects a failure in the initialization of the connected device 708 based on the initialization monitoring time 860, and the failure detection unit 140 based on the initialization monitoring time 860 secondly.

  The second effect of the present embodiment described above is that the connection apparatus 708 whose operation is unstable immediately after power on can be detected as a failure of the connection apparatus 708 which has been broken from the beginning. is there.

  The reason is that if the connected device type of the connected device 708 is not included in the monitoring time setting table 163, the monitoring time determination unit 160 performs the process from detection of the connected device type of the connected device 708 a predetermined number of times. It is from.

  The third effect according to the present embodiment described above is to detect a failure of the connection device 708 that has failed from the beginning also for the connection device 708 of types other than the connection device type included in the monitoring time setting table 163. Is possible.

  The reason is that when the connected device type of the connected device 708 is not included in the monitoring time setting table 163, the monitoring time determination unit 160 determines the specified value as the initialization monitoring time 860 of the connected device 708. is there.

<<< Second Embodiment>>>
Next, a second embodiment of the present invention will be described in detail with reference to the drawings. Hereinafter, in the range in which the description of the present embodiment is not unclear, the description overlapping with the above description will be omitted.

  FIG. 6 is a block diagram showing the configuration of an information processing apparatus 210 according to the second embodiment of the present invention.

  As shown in FIG. 6, the information processing apparatus 210 in the present embodiment includes a monitoring time determination unit 160 and a failure detection unit 140.

  The information processing device 210 may be realized by the computer 700 shown in FIG. 2 as in the case of the information processing device 110 shown in FIG.

=== Monitoring time determination unit 160 ===
The monitoring time determination unit 160 determines an initialization monitoring time 860 corresponding to the initialization of the connected device 708 based on the monitoring time setting table 163 to determine an initialization monitoring time 860 of the connected device 708 connected. The monitoring time setting table 163 is monitoring time information indicating, for each type of the connected device 708, an initialization monitoring time corresponding to an execution time of initialization of the connected device 708.

  The specific configuration and operation of the monitoring time determination unit 160 of this embodiment may be the same as that of the monitoring time determination unit 160 shown in FIG.

=== Failure detection unit 140 ===
The failure detection unit 140 detects a failure in the initialization of the connected device 708 based on the initialization monitoring time 860 determined by the monitoring time determination unit 160, and outputs failure information 840 based on the detected failure. .

  The specific configuration and operation of the failure detection unit 140 of the present embodiment may be similar to that of the failure detection unit 140 shown in FIG.

  The present embodiment is not limited to a computer device, and can be applied to any device (for example, a device that processes some information) including a configuration (for example, BMC 40) having a time monitoring function at initialization.

  The effect of the present embodiment described above is that it is possible to detect a failure of the connection device 708 that has failed from the beginning.

  The reason is that the following configuration is included. First, the monitoring time determination unit 160 determines the initialization monitoring time 860 of the connection device 708 based on the monitoring time setting table 163. Second, the failure detection unit 140 detects a failure in the initialization of the connection device 708 based on the initialization monitoring time 860.

  Each component described in each of the above embodiments does not have to be an independent entity. For example, a plurality of arbitrary components thereof may be realized as one module. Also, any one of the components may be realized by a plurality of modules. Also, any one of the components may be any other one of the components. Also, any one of the components may overlap with any other one of the components.

  The components that implement the components and the modules in the embodiments described above may be implemented as hardware if possible. Also, each component and a module that implements each component may be implemented by a computer and a program. Also, each component and a module that implements each component may be implemented by a mixture of hardware modules, a computer, and a program.

  The program is recorded in a non-transitory recording medium readable by a computer, such as a magnetic disk or a semiconductor memory, and provided to the computer. Then, the program is read by the computer from a non-temporary recording medium, for example, when the computer is started. The read program causes the computer to function as a component in the above-described embodiments by controlling the operation of the computer.

  Moreover, in each embodiment described above, although a plurality of operations are described in the form of a flowchart in order, the order of the description does not limit the order of executing the plurality of operations. For this reason, when carrying out each embodiment, the order of the plurality of operations is changed within the range that does not hinder the functional, performance, and other characteristics in carrying out each embodiment. be able to.

  Furthermore, in each of the embodiments described above, the plurality of operations are not limited to being performed at individually different timings. For example, other operations may occur during the execution of an operation, as long as functional, performance, and other characteristics are not impaired in implementing each embodiment. In addition, the execution timings of one operation and another operation may partially or entirely overlap within a range that does not affect functional, performance, and other characteristics in implementing each embodiment. May be

  Furthermore, in each of the embodiments described above, although one operation is described as triggering another operation, the description does not limit the relationship between one operation and another operation. For this reason, when implementing each embodiment, the relationship between the plurality of operations is changed within a range that does not hinder functional, performance, and other characteristics in implementing each embodiment. be able to. Further, the specific description of each operation of each component does not limit each operation of each component. For this reason, each concrete operation of each component may be changed in the range which does not affect functional, performance, and other characteristics in implementing each embodiment.

  As mentioned above, although this invention was demonstrated with reference to each embodiment, this invention is not limited to the said embodiment. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

20 power input unit 40 BMC
50 BIOS
110 information processing apparatus 140 failure detection unit 150 post task 160 monitoring time determination unit 161 type confirmation unit 162 correspondence determination unit 163 monitoring time setting table 180 maintenance server 190 log storage unit 210 information processing apparatus 700 computer 701 processor 702 memory 704 input unit 705 Output unit 706 Communication unit 707 Connection circuit 708 Connection device 709 Recording medium 820 Power input information 840 Failure information 860 Initialization monitoring time

Claims (7)

An information processing apparatus that performs a process of detecting a connected device connected to the apparatus itself and a process of initializing the detected connected device in response to power on.
Monitoring time information in which the type of the connected device and the initialization monitoring time corresponding to the execution time of the process of initializing the connected device are stored before performing the process of detecting the connected device; Monitoring time determination means for determining an initialization monitoring time for the connected device based on the monitoring time information;
An information processing apparatus comprising: failure detection means for detecting a failure of the connected connected device based on the initialization monitoring time determined by the monitoring time determination means; and outputting information related to the detected failure. The monitoring time determination means
Type confirmation means for confirming the type of the connected device connected;
A response determining unit that determines whether the information matching the type of the connected device is included in the monitoring time information;
When it is determined that the information matching the type of the connected device that is connected is not included in the monitoring time information, the processing by the type confirmation unit and the correspondence determination unit is repeated a predetermined number of times. The information processing apparatus according to claim 1. The monitoring time determination means determines a prescribed value as the initialization monitoring time of the connection device, when the information matching the type of the connected device is not included in the monitoring time information. 2. The information processing apparatus according to 2. The information processing apparatus according to any one of claims 1 to 3, further comprising a log storage unit that stores information on the failure as a log. An information processing system that performs processing of detecting a connected device connected to an information processing apparatus and processing of initializing the connected device in response to power-on.
Monitoring time information in which the type of the connected device and the initialization monitoring time corresponding to the execution time of the process of initializing the connected device are stored before performing the process of detecting the connected device; Monitoring time determination means for determining initialization monitoring time for the connected device based on the monitoring time information, and the connected connection based on the initialization monitoring time determined by the monitoring time determination means An information processing apparatus including failure detection means for detecting a failure of a device and outputting information related to the detected failure;
An information processing system including: a maintenance server which outputs information on the failure to a user; A method of performing processing of detecting a connected device connected to an information processing apparatus and processing of initializing the connected device in response to power-on,
Monitoring time information in which the type of the connected device and the initialization monitoring time corresponding to the execution time of the process of initializing the connected device are stored before performing the process of detecting the connected device; Determining an initialization monitoring time for the connected device based on the monitoring time information;
A failure detection method, comprising: detecting a failure of the connected connected device based on the determined initialization monitoring time; and outputting information on the detected failure. A program that causes a computer to execute a process of detecting a connected device connected to an information processing apparatus and a process of initializing the connected device in response to power on.
Monitoring time information in which the type of the connected device and the initialization monitoring time corresponding to the execution time of the process of initializing the connected device are stored before performing the process of detecting the connected device; Determining an initialization monitoring time for the connected device based on the monitoring time information;
A program that causes a computer to execute a process of detecting a failure of the connected connected device based on the determined initialization monitoring time and outputting information regarding the detected failure.

Images