JP2017059030A - Information processing device, and information processing device control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that suppresses reduction in performance due to congestion of a slave function unit in an information processing device composed of a main function unit and the slave function unit.SOLUTION: An information processing device comprises: a first main function unit that controls transmission of a processing message; a second main function unit that analyzes the processing message and notifies the first main function unit of an analysis result; and a slave function unit group that receives the processing message from the first main function unit and processes the received processing message. The second main function unit is configured to: determine an amount of load of a resource on the basis of an estimation accumulation running time value in which an estimation processing time of the processing message to be transmitted to the resource from the first main function unit is accumulated for each resource; determine a congestion degree indicative of a degree of congestion in the resource for each resource on the basis of a determination result of the amount of load; and notify the main function unit of a determination result of the congestion degree as a congestion degree notice. The main function unit is configured to process the processing message addressed to the corresponding resource on the basis of the determination result of the congestion degree included in the congestion degree notice.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information processing apparatus having a function of controlling a congestion state of the information processing apparatus and a method for controlling the information processing apparatus.

  With the increase in network traffic, the processing capability required for information processing devices connected to the network is also increasing. Further, in order to suppress the occurrence of a communication failure due to traffic exceeding the processing capability of the information processing apparatus, the information processing apparatus also needs a congestion control function.

  In relation to the present invention, Patent Document 1 discloses a degree of congestion of processing of a main function unit (hereinafter, a degree of congestion is referred to as “congestion degree”) in an information processing apparatus including a main function unit and a sub function unit. ) Describes a congestion control system provided with a function of determining whether the state is in a non-congested state or a congested state. According to the technique described in Patent Literature 1, when it is determined that the main function unit is in a congestion state, a processing message with a low importance received from the sub function unit is discarded. Patent Document 2 describes a machine management system having a server resource management function.

JP 2009-212862 A JP 2014-229253 A

  In the information processing apparatus described in Patent Document 1, when the load of the slave function unit increases and the degree of congestion increases, it takes time to process the processing message received by the slave function unit from the master function unit. Then, the function of the subordinate function unit or the entire information processing apparatus may be reduced or stopped.

  For example, when the sub-function unit executes multitask processing including a plurality of tasks A and B having different priorities, if a large number of new tasks A having higher priority than task B being processed are generated, task A The process of task B is waited until the process of (1) is completed. That is, due to an increase in load, processing of low priority tasks in the slave function unit is delayed.

  When the main function unit distributes the processing message to a plurality of sub function units and distributes the load, the load on each sub function unit is reduced to some extent. However, as the load on the entire information processing apparatus increases, the cumulative value of processor processing time per slave function unit also increases, so the number of active tasks increases and the time required for task processing also increases.

  From such a background, in an information processing apparatus composed of a main function section and a sub function section, load control in the sub function section is performed to suppress a decrease in the performance of the information processing apparatus due to congestion of the sub function section Technology is needed. However, Patent Documents 1 and 2 do not describe a technique for suppressing the congestion of the slave function unit.

(Object of invention)
An object of the present invention is to provide a technology capable of suppressing a decrease in performance of an information processing apparatus due to congestion of a subordinate function part in an information processing apparatus composed of a main function part and a subordinate function part. .

  The information processing apparatus according to the present invention includes a first main function unit that controls transmission of a processing message, and a first main function unit that analyzes the processing message and notifies the first main function unit of the analysis result. A second main function unit which is connected to the first main function unit and can communicate with the first main function unit, and is communicably connected to the first and second main function units, and receives and processes a processing message from the first main function unit. A second subordinate functional unit group including a resource to be processed, and the second main functional unit includes an estimated accumulated traveling time value obtained by accumulating the estimated processing time of the processing message transmitted from the first main functional unit to the resource for each resource. The resource load amount is determined for each resource based on the load amount, and based on the load amount determination result, the congestion degree indicating the degree of congestion in the resource is set to the first state, which is higher in the congestion degree than the first state. No. 2 and higher congestion level than the second state The state is determined for each resource as one of the following states, the determination result of the congestion level is notified to the first main function unit as the congestion level notification, and the first main function unit determines the congestion level included in the congestion level notification. Based on the result, the processing message addressed to the corresponding resource is processed.

  The control method for the information processing apparatus according to the present invention determines the load amount of a resource based on an estimated accumulated traveling time value obtained by accumulating the estimated processing time of a processing message transmitted from the first main function unit to the resource for each resource. The congestion degree indicating the degree of congestion in the resource is determined based on the load amount in the first state, the second state having a higher degree of congestion than the first state, and the second state. It is determined for each resource as one of the third states with a high congestion level, the determination result of the congestion level is notified as a congestion level notification, and the corresponding resource is addressed based on the determination result of the congestion level included in the congestion level notification. The processing message is processed.

  A control program for an information processing apparatus according to the present invention is based on an estimated accumulated traveling time value obtained by accumulating, for each resource, an estimated processing time of a processing message transmitted from a first main function unit to a resource. The procedure for determining the load amount of each resource for each resource, the congestion level indicating the degree of congestion in the resource based on the load amount, the first state, the second state where the congestion level is higher than the first state , And a procedure for determining for each resource as one of the third states having a higher degree of congestion than the second state, a procedure for notifying the determination result of the congestion level as a congestion level notification, and the congestion level included in the congestion level notification Based on the determination result, the procedure for processing the processing message addressed to the corresponding resource is executed.

  The present invention makes it possible to suppress a decrease in performance of an information processing apparatus due to congestion of a subordinate function part in an information processing apparatus composed of a main function part and a subordinate function part.

It is a block diagram which shows the structural example of the information processing apparatus of 1st Embodiment. It is a figure which shows the example of the criterion of a congestion degree. It is a flowchart which shows the example of the notification process of the congestion degree of the resource in a reserve main function part. It is a flowchart which shows the example of the congestion protection process in an active main function part. It is a flowchart which shows the example of the reallocation procedure of the resource of an active main function part.

(First embodiment)
A first embodiment of the present invention will be described. FIG. 1 is a block diagram illustrating a configuration example of the information processing apparatus 10 according to the first embodiment. The information processing apparatus 10 includes a main function unit 11 and slave function unit groups 12 to 14. The main function unit 11 includes an active main function unit 11-1 and a spare main function unit 11-2. The functions of the information processing apparatus 10 include an information processing apparatus including a main function unit 11 and sub function unit groups 12 to 14 when a CPU (Central Processing Unit) provided in the information processing apparatus 10 executes a program. This can be realized by controlling the entire 10. For example, the program is recorded in a storage unit such as a semiconductor memory or a fixed magnetic disk included in the information processing apparatus 10.

  The main function unit 11 receives a processing message indicating a processing command or data address in the information processing apparatus 10 and processes the received processing message. The active main function unit 11-1 realizes the function of the information processing apparatus 10 based on the processing message received from the resources included in the sub function unit groups 12 to 14. In addition, the active main function unit 11-1 transmits a processing message to the resources of the subordinate function unit groups 12 to 14 and assigns functions to the subordinate function unit groups 12 to 14 in units of resources (for example, processing messages (Sharing of processing) is determined. The sub functional unit groups 12 to 14 transmit processing messages generated in the peripheral device of the CPU and processing messages generated in the sub functional unit groups 12 to 14 with execution of the program in the CPU to the main functional unit 11.

  The spare main functional unit 11-2 monitors the processing state of the sub functional unit groups 12-14. The spare main function unit 11-2 may further include a function of monitoring the processing state of the active main function unit 11-1. The spare main function unit 11-2 functions as a peripheral function unit of the active main function unit 11-1 in the same CPU. The active main function unit 11-1 and the standby main function unit 11-2 may have an active-backup configuration. In the working-spare configuration, the standby main function unit 11-2 is in a standby state with respect to the function of the working main function unit 11-1 while the working main function unit 11-1 is operating normally. When the active main function unit 11-1 fails, the spare main function unit 11-2 can substitute part or all of the functions of the active main function unit 11-1.

  As shown in FIG. 1, the sub functional unit group 12 includes one or more resources 12-1 to 12-n. The resource is an element that constitutes a slave function unit for realizing the functions of the slave function unit groups 12 to 14. One or more resources constitute each sub functional unit group. More specifically, the communication between the sub functional unit groups 12 to 14 and the main functional unit is communication between each resource included in the sub functional unit groups 12 to 14 and the main functional unit. In FIG. 1, n (n is a natural number) resources 12-1 to 12-n are illustrated as resources of the subordinate function group 12. Similarly, the sub functional unit group other than the sub functional unit group 12 includes one or more resources. The number of resources included in the sub functional unit groups 12 to 14 may not be the same. Further, the number of the sub functional unit groups 12 to 14 is not limited to three.

  Communication lines between the resources of the active main function unit 11-1, the spare main function unit 11-2, and the sub function unit groups 12 to 14 are connected by wired OR or via a switch. Therefore, the active main function unit 11-1 and the standby main function unit 11-2 can communicate with each resource.

(Explanation of the main function part currently used)
Each part of the information processing apparatus 10 will be described in more detail. The active main function unit 11-1 specifies a function for receiving a processing message from the resources of the subordinate function unit groups 12 to 14, a function for processing the received processing message, and a resource to which the processing message is transmitted to make it a necessary resource A function of returning a processing message. The active main function unit 11-1 further performs a function corresponding to the degree of congestion (degree of congestion) for each resource on the basis of the congestion degree notification notified from the standby main function unit 11-2. A function of managing resource allocation based on the degree of congestion;

  The active main function unit 11-1 may transmit a response message to an external device (not shown) based on the processing message received from each resource. The active main function unit 11-1 may generate a processing message to be transmitted to each resource based on the message received from the external device. The external device is an input / output device such as a display device or a keyboard.

(Explanation of spare main function part)
The standby main function unit 11-2 has a function of analyzing the processing message received from the active main function unit 11-1, and the type of the processing message notified from the active main function unit 11-1 to each resource based on the analysis result. A function of specifying (message type) for each resource. The spare main function unit 11-2 may have a function of selecting a message to be counted as a received message and a message not to be counted among the notified processing messages based on the execution result of the above function. .

  The spare main function unit 11-2 further has a function of calculating a resource load amount (temporary load amount) based on the specified message type, and determining a resource congestion level based on the temporary load amount.

  The spare main function unit 11-2 includes an estimated travel time table related to the processing message notified from the active main function unit 11-1. The estimated travel time table is a message type of a processing message used in the information processing apparatus 10, and an estimated value (hereinafter referred to as “travel time”) of a time required for the CPU to execute the processing message of the type in each resource. Is an associated list. Thereby, the standby main function unit 11-2 can quickly acquire the processing time for the processing message of each resource as the travel time.

  The spare main function unit 11-2 includes a cycle timer and a reception counter. The cycle timer measures the cycle of processing performed by each resource for the processing message for each resource based on a preset measurement cycle. The reception counter counts the number of processing messages transmitted to the resource by the active main function unit 11-1 for each resource. Thereby, the travel time for each resource within the measurement cycle can be estimated.

  The spare main function unit 11-2 reads the travel time corresponding to the message type specified by the function of specifying the type of the processing message for each resource with reference to the estimated travel time table. Then, the standby main function unit 11-2 adds the read travel times within the measurement period, and calculates an estimated travel time cumulative value for each resource. Further, the standby main function unit 11-2 includes a cumulative counter. The cumulative counter counts the number of processing messages in which the travel time is added to the estimated travel time cumulative value.

  The spare main function unit 11-2 increases the value of the cumulative counter by 1 each time the traveling time is added to the estimated traveling time cumulative value, and compares the cumulative counter with the number of reception counters. By determining whether the value of the reception counter is equal to the value of the cumulative counter, the travel time for each resource is calculated for all processing messages counted by the reception counter, and the travel time is added to the cumulative counter. You can determine whether or not.

  The spare main function unit 11-2 calculates a load amount (hereinafter referred to as a “temporary load amount”) estimated to be applied to the resource within the measurement cycle based on the travel time accumulated value calculated in the above procedure. Calculate for each resource. Then, the standby main function unit 11-2 determines whether the processing load in the slave function unit is a low load, a medium load, or a high load based on the calculated temporary load amount. To determine whether the resource is low load, medium load, or high load, the estimated running time cumulative value is compared with two different thresholds P and Q (0 <P <Q), and based on the comparison result The determination may be made by dividing the temporary load amount into three stages. For example, if the estimated running time cumulative value <P, the resource is determined to be low in load. If P ≦ estimated travel time cumulative value ≦ Q, the resource is determined to be a medium load. If Q <estimated running time cumulative value, the resource is determined to be highly loaded.

(Explanation of congestion determination procedure)
The spare main function unit 11-2 determines the degree of congestion of each resource based on the temporary load amount. Hereinafter, a procedure for determining the degree of congestion will be described. FIG. 2 is a diagram illustrating an example of a criterion for determining the degree of congestion. The determination of the congestion level of the resource is performed based on the congestion level (previous state) obtained in the previous measurement cycle and the load situation (rear state) in the subsequent measurement cycle. The degree of congestion is roughly classified into a “congestion state” in which the resource processing load is the highest and a “non-congestion state” in which the resource processing load is relatively low. The “non-congested state” is further classified into “non-congested state (low congestion)” and “non-congested state (semi-congested)”. The non-congestion state (semi-congestion) is a congestion degree in which the processing load of the resource is between a congestion state and a non-congestion state (low congestion). When the previous state does not exist (for example, immediately after the information processing apparatus 10 is started), the congestion degree is set to “non-congested state” based only on the temporary load amounts “low load”, “medium load”, and “high load”. It may be determined as (low congestion), “non-congested state (semi-congested)”, or “congested state”.

(1) When the resource is “non-congested state (low congestion)” in the previous state In the previous measurement cycle (previous state), a certain resource (here, “resource A”) included in the subordinate function group 12 to 14 ) Is “non-congested state (low congestion)”, and if the resource A is a low load or medium load in the subsequent state, it is determined that the congestion degree is “non-congested state (low congestion)”. The When resource A is “non-congested (low congestion)” in the previous state, resource A is heavily loaded in the subsequent measurement cycle, and the count value of the number of protection stages in the high-loaded state is preset. If it is equal to or greater than the threshold (that is, if the load is continuously high for a predetermined number of times), the resource A is determined as “non-congested (quasi-congested)”. If the count value of the protection stage number is less than the threshold value, it is determined that the resource A remains in the “non-congested state (low congestion)”.

(2) When the resource is “non-congested (quasi-congested)” in the previous state When the resource A is “non-congested (quasi-congested)” in the previous state, the resource A is lightly loaded in the subsequent measurement cycle When the count value of the number of protection stages in the low load state is equal to or greater than a preset threshold value (that is, when the load is continuously low for a predetermined number of times), the resource A is “non-congested state (low Congestion) ”. If the count value of the protection stage number is less than the threshold value, the resource A is determined to be “non-congested (quasi-congested)”. If the resource A is a medium load in a later measurement cycle, the resource A is determined to be “non-congested (quasi-congested)”. If the resource A is heavily loaded in a later measurement cycle and the count value of the number of protection stages in the heavily loaded state is equal to or greater than a preset threshold value, the resource A is determined to be “congested state”. If the count value of the protection stage number is less than the threshold value, the resource A is determined to be “non-congested (quasi-congested)”.

(3) When the resource is in the “congested state” in the previous state When the resource A is in the “congested state” in the previous state, the resource A is in a low load in the subsequent cycle and the number of protection stages in the low load state Is equal to or greater than a preset threshold value, the resource A is determined to be “non-congested (quasi-congested)”. If the count value of the protection stage number is less than the threshold value, the resource A is determined to be “congested”. When the resource A is in the “congested state” in the previous state, if it is determined that the resource A is medium load or high load in the subsequent measurement cycle, it is determined as “congested state” in any case. .

  As described above, by providing the number of protection stages for the state transition of the congestion level, between the “non-congestion state (low congestion)”, “non-congestion state (quasi-congestion)”, and “congestion state” in successive measurement cycles When the state transition is performed at, it is possible to suppress frequent transition of the congestion degree. When determining the state transition using the number of protection stages as described above, the transition from the low congestion state to the higher congestion state is delayed by the protection, so that the high load continues for a long time, and the resource The stable operation of A may be hindered. For this reason, the protection stage number used for the transition to the direction where the degree of congestion becomes larger may be set to be relatively small.

  The degree of congestion may be determined in parallel for all resources. The determined congestion level is notified to the active main function unit 11-1 as a congestion level notification. The spare main function unit 11-2 may notify each resource of the degree of congestion. The active main function unit 11-1 can execute an appropriate congestion protection operation or resource allocation for each resource based on the congestion level included in the notified congestion level notification.

  As described above, the standby main function unit 11-2 calculates the estimated travel time based on the type of the processing message transmitted from the active main function unit 11-1 to the resources of the sub function unit groups 12-14. Then, the standby main function unit 11-2 calculates the temporary load amount for each resource based on the accumulated travel time value obtained by accumulating the estimated travel time for each resource. Then, the standby main function unit 11-2 determines the current congestion level to one of three levels for each resource based on the temporary load amount and the previous determination result of the congestion level.

(Description of sub functional group)
The sub functional unit groups 12 to 14 and the resources included in these will be described. The following description is common to all the sub functional unit groups and the resources provided in them unless otherwise specified.

  The resource is a CPU function unit that functions when a program is executed by a CPU provided in the information processing apparatus 10. Each resource receives a processing message from the main function unit 11 (that is, the active main function unit 11-1 and the spare main function unit 11-2), and executes the contents of the received processing message. Each resource returns a result of executing the processing message to the main function unit 11. Each resource may duplicate the processing message and transmit the duplicated processing message to the active main function unit 11-1 and the standby main function unit 11-2. With such a configuration, the standby main function unit 11-2 can receive all processing messages transmitted and received between the sub function unit groups 12 to 14 and the active main function unit 11-1.

  Specifically, the secondary functional unit groups 12 to 14 and their resources may be detachable hardware packages. For example, the sub functional unit group 12 is a card mounted on the information processing apparatus 10, and the resources 12-1 to 12-n are a memory on the card and its control device. One or more of such cards (that is, subordinate functional unit groups) are mounted on the information processing apparatus 10.

  The information processing apparatus 10 including the main function unit 11 and the sub function unit groups 12 to 14 performs multitask processing and executes message communication with an external device such as an input / output device in real time and in parallel.

(Explanation of congestion protection processing)
The active main function unit 11-1 confirms the congestion degree notification notified from the standby main function unit 11-2. The congestion degree notification includes the determination result of the congestion degree for each resource (that is, “non-congested state (low congestion)”, “non-congested state (quasi-congested)”, “congested state”)).

  For the resource in the “non-congested state (semi-congested)” or “non-congested state (low-congested)”, the working main function unit 11-1 transmits the resource to the resource. Perform normal processing on the message. In normal processing, processing messages are sent to resources.

  On the other hand, for the resource in the “congested state”, the active main function unit 11-1 uses the message determination function to set the type of processing message to be transmitted to the resource and the importance thereof to a preset reference. Determine based on. Then, the active main function unit 11-1 processes differently between a process message determined to have a high importance level and a process message determined to have a low importance level for a message addressed to a resource in a “congested state” ( Congestion protection processing).

  Specifically, the active main function unit 11-1 discards the processing message having a low importance level or abnormally ends the processing message. As a result, it is possible to reduce the load on the execution process in the resource in the “congested state”. The active main function unit 11-1 may determine that the processing message belonging to the new communication link establishment request is low in importance.

  On the other hand, the active main function unit 11-1 performs normal processing on the processing message determined to have high importance in the congestion protection processing regardless of the congestion level of the resource. For example, a processing message belonging to a request to release a communication link during communication or a maintenance monitoring request may be determined as having high importance. That is, even if the resource is in a “congested state”, the active main function unit 11-1 transmits a processing message having a high importance level to the resource as usual. As a result, congestion protection control for resources provided in the subordinate function unit group is realized while preventing an important message from being discarded.

  The active main function unit 11-1 may discriminate the processing message into three types, for example, high, medium, and low, instead of distinguishing the processing message into two types according to the level of importance. Then, the importance level of the processing message transmitted to the resource according to the three congestion levels may be divided into three stages. For example, all messages are transmitted to a resource in a “non-congested state (low congestion)”. Only the processing messages with the importance “high” and “medium” are transmitted to the resource of “non-congested state (semi-congested)”. Only processing messages with a high importance level are transmitted to resources in a “congested state”.

  In this way, by subdividing the resource congestion level and the message importance level, and limiting the messages sent to the resource according to the resource congestion level, more detailed congestion protection control according to the resource congestion level Is realized.

(Explanation of resource reallocation process)
The active main function unit 11-1 has a function of managing resource allocation based on the degree of congestion for each resource. Specifically, the active main function unit 11-1 confirms the continuity of the congestion degree for each resource, and performs the process assigned to the resource in which the “congestion state” continues, “non-congestion state (low Resource reassignment processing is performed to allocate resources that continue “congestion”.

  The active main function unit 11-1 confirms the latest content of the congestion degree notification notified from the standby main function unit 11-2 (that is, the congestion degree for each resource) for each period T1, and determines the confirmed congestion degree. Count for each resource. Then, the active main function unit 11-1 compares the count value determined as the congestion state during the predetermined period T2 (T2> T1) with the first congestion state continuation threshold. When the count value determined as “congestion state” is larger than the first congestion state continuation threshold, the resource is determined as “congestion continuation”. For example, the active main function unit 11-1 confirms the degree of congestion of all resources 10 times during the period T2, and determines that the resource having the “congestion state” three times or more is “congestion continuation”. Similarly, the count value determined as “non-congested state (low congestion)” is compared with the second congestion state continuation threshold. When the count value determined as “non-congested state (low congestion)” is larger than the second congestion state continuation threshold, the resource is determined as “non-congested continuation”. For example, the active main function unit 11-1 confirms the degree of congestion of all resources 10 times during the period T2, and “non-congestion continuation” is obtained for a resource that has been “non-congested (low congestion)” five times or more. Is determined. When the conditions of both “congestion continuation” and “non-congestion continuation” are satisfied, the active main function unit 11-1 does not have to make any determination of “congestion continuation” or “non-congestion continuation”. .

  When the active main function unit 11-1 detects a resource determined to be “congestion continuation”, the active main function unit 11-1 searches for a resource determined to be “non-congestion continuation” from a sub-function unit group that does not include the resource. When there is another resource determined to be “non-congestion continuation”, the active main function unit 11-1 changes the processing of the resource determined to be “congestion continuation” to the resource determined to be “non-congestion continuation”. assign. The active main function unit 11-1 changes the destination of the processing message that has been transmitted to the “congestion continuation” resource so far, and transmits the processing message to the newly assigned “non-congestion continuation” resource. .

  By such processing, it is possible to suppress the congestion of the slave function unit by reducing the load of the resource in which the congestion state continues, and to improve the processing efficiency of the entire information processing apparatus 10.

  Note that the resource of “non-congested (quasi-congested)” has a higher load than the resource of “non-congested (low-congested)”. Is more likely than a resource in a “non-congested state (low congestion)”. For this reason, in the above procedure, “non-congested state (semi-congested)” for a certain resource is not used for the determination of reassigning the processing of the resource determined to be “congestion continued”. . In this way, by dividing the congestion degree into three stages and suppressing the resource of “non-congested state (semi-congested)” from being reassigned, the resource of “non-congested state (semi-congested)” is reduced. By performing processing in place of the “congestion continuation” resource, it is possible to suppress a congestion state.

  In order to ensure that resources that continue in “non-congested state (quasi-congested)” are not subject to reassignment, the number of “non-congested state (semi-congested)” continues to be counted, When the count value determined as “congestion state (semi-congestion)” is larger than the third congestion state continuation threshold, the resource may be determined as “semi-congestion continuation”. Resources determined to be “semi-congestion continuation” are excluded from reassignment of resource processing.

  Furthermore, there is either congestion protection processing that performs different processing depending on the level of importance of processing messages, or resource reassignment processing that assigns resource processing that is set to "Congestion continuation" to resources that are set to "Continuation of non-congestion" The degree of resource congestion can be improved by either one or both of them. For example, if the congestion protection process does not reduce the congestion level of the resource even if only a relatively high level of processing message is sent to the resource in the “congested state”, the resource is reassigned and the resource is If it is determined that “congestion continues”, the resource load is distributed. As a result, it is possible to further reduce the load by determining that a resource having a low load reduction effect only by the congestion protection process is “congestion continuation”.

(Explanation of operation by flowchart)
The operation of the above-described first embodiment will be described based on the flowcharts of FIGS. First, an example of resource congestion level notification processing in the standby main function unit 11-2 will be described with reference to the flowchart of FIG. Congestion protection processing and resource reallocation processing in the active main function unit 11-1 will be described with reference to the flowcharts of FIGS.

  Each step in FIG. 3 is performed in parallel for each resource. In the description of the flowchart below, the resource to be described is described as “resource B” as an example. The description regarding the resource B is common to all resources included in the information processing apparatus 10.

  In FIG. 3, the standby main function unit 11-2 activates a preset cycle timer (step S101: “cycle timer interrupt”), and initializes the cumulative counter and the estimated running time cumulative value (step S102). .

  The spare main function unit 11-2 registers the number of processing messages notified to the resource B from the active main function unit 11-1 in the reception counter for each resource, and analyzes each processing message notified to the resource B. The type of the processing message (message type) is specified (step S103). The spare main function unit 11-2 may notify the current main function unit 11-1 of the identified message type in association with the processing message and its importance.

  The spare main function unit 11-2 reads the estimated traveling time value of the processing message in which the message type is specified based on the preset estimated traveling time table (step S104), and reads the estimated traveling time accumulated value as described above. The calculated estimated travel time value is added (step S105).

  When the standby main function unit 11-2 adds the estimated travel time value, the reserve main function unit 11-2 increases the value of the cumulative counter by 1 (step S106). Here, it is determined whether or not the values of the reception counter and the cumulative counter are equal (step S107). If the values of both counters are different (step S107: NO), the backup main function unit 11-2 analyzes the other received processing message (to step S103). When the values of the reception counter and the cumulative counter are equal (step S107: YES), it is determined that the estimated travel time values of all received processing messages have been set.

  The spare main function unit 11-2 calculates a temporary load amount based on the estimated running time cumulative value and determines whether the temporary load amount corresponds to a low load, a medium load, or a high load ( Step S108). As described above, the low load, the medium load, and the high load are determined by comparing the estimated running time cumulative value with two different threshold values and dividing the temporary load amount into three stages based on the comparison result. May be.

  Next, the spare main function unit 11-2 determines the congestion level of the resource B based on the determination result, the previous state of the active main function unit 11-1, and the like (step S109: “congestion level determination process”). ). The process of step S109 is performed according to the reference of FIG. The spare main function unit 11-2 notifies the active main function unit 11-1 of the congestion degree for each resource determined in step S109 (step S110: “congestion degree notification process”).

  The spare main function unit 11-2 is a peripheral function unit of the active main function unit 11-1 and does not become a bottleneck for processing of the information processing apparatus 10. For this reason, even if the spare main function unit 11-2 executes the processing described with reference to FIG. 3, the processing capability of the main function unit 11 as a whole does not decrease.

  Next, the congestion protection process in the active main function unit 11-1 will be described based on the flowchart of FIG. FIG. 4 is a flowchart illustrating an example of congestion protection processing in the active main function unit 11-1. FIG. 4 is a flowchart showing an example of processing in the active main function unit 11-1 after the congestion state is notified from the standby main function unit 11-2 in step S110 of FIG.

  When the processing message transmission process to the resource B occurs (S201), the active main function unit 11-1 determines the congestion level of the resource B based on the congestion level notification notified from the standby main function unit 11-2. (Step S202). As shown in FIG. 2, there are three levels of congestion: “congestion state”, “non-congestion state (semi-congestion)”, and “non-congestion state (low congestion)”. B load) is low.

  In step S202, when it is determined that the congestion level of the resource B is other than “congestion state” (that is, “non-congestion state (semi-congestion)” or “non-congestion state (low congestion))” (step S202: NO) ), Normal processing is performed on the processing message (step S205). In normal processing, the processing message is transmitted to the resource B as usual.

  When it is determined that the congestion level of the resource B is “congestion state” (step S202: YES), the active main function unit 11-1 sets the message type set in advance for the processing message transmitted to the resource B. The level of importance is determined according to the importance (step S203: message type determination). Here, when the information on the importance level of the processing message has been notified from the standby main function unit 11-2 in the past, the active main function unit 11-1 determines the importance level of the processing message based on the information. You may judge.

  In step S203, a discarding process or an abnormal termination process (congestion protection process) is executed for a processing message determined to be low in importance, such as a request for establishing a new communication link (step S203: non-important to S204). ). On the other hand, the processing message determined to have high importance is transmitted to the resource B as usual (step S203: importance to S205). As described above, the determination of the congestion state in step S202 may be performed in, for example, three stages instead of the two stages, and the determination of the importance of the message may be performed in three or more stages. As a result, finer congestion protection processing is performed.

  Next, the operation of the active main function unit 11-1 when the “congestion continuation” resource is detected will be described with reference to FIG. FIG. 5 is a flowchart showing an example of a resource reallocation procedure of the active main function unit 11-1. When the “congestion continuation” resource is not detected, the active main function unit 11-1 does not reallocate the resource shown in FIG.

  When the active main function unit 11-1 detects a resource (subordinate function unit x1, corresponding resource y1) determined as “continuation of congestion” (step S301 in FIG. 5), the subordinate function unit group to which the resource y1 belongs A resource determined as “non-congestion continuation” is searched from the subordinate functional unit group excluding x1 (step S302). When there is a resource determined to be “non-congestion continuation” (step S302: YES), the active main function unit 11-1 determines that the resource is determined to be “non-congestion continuation” (secondary function unit x2, resource y2). Is identified (step S303), and the operation of the resource y2 is stopped (step S304). The active main function unit 11-1 allocates the processing of the resource y1 determined as “continuation of congestion” to the resource y2, after confirming the suspension of the operation of the resource y2. Then, it instructs the resource y2 to start operation using the function of the resource y1 (step S305). Here, the active main function unit 11-1 transmits the processing message that has been transmitted to the resource y1 so far to the newly allocated resource y2.

  By reducing the load of the resource determined as “continuation of congestion” by the procedure shown in FIG. 5, the congestion of the slave function unit can be suppressed and the processing of the entire information processing apparatus 10 can be made more efficient. Further, the procedure of FIG. 5 is not used for the determination that the “non-congested state (semi-congested)” is to be reassigned as the resource processing for “continuous congestion”.

  Only one of the processes in FIGS. 4 and 5 described above may be performed, or both may be performed. In either case, the information processing apparatus 10 according to the first embodiment suppresses a decrease in the performance of the information processing apparatus due to the congestion of the slave function section in the information processing apparatus including the master function section and the slave function section. There is an effect that it is possible.

  Further, the information processing apparatus 10 according to the first embodiment can reduce the load in units of resources by a program. For this reason, the information processing apparatus 10 can quickly and inexpensively improve the congestion of the slave function unit even when it takes time to increase the hardware resources for increasing the processing capability of the slave function unit.

(Second Embodiment)
The information processing apparatus 10 according to the first embodiment can be expressed as the information processing apparatus according to the second embodiment as follows. That is, the information processing apparatus includes a first main function unit, a second main function unit, and a sub function unit group including resources. In contrast to the first embodiment, the first main function unit corresponds to the active main function unit 11-1, the second main function unit corresponds to the standby main function unit 11-2, and includes a resource. The functional unit group corresponds to the secondary functional unit groups 12 to 14.

  The first main function unit controls transmission of the processing message. The second main function unit is provided together with the first main function unit, analyzes the processing message, and notifies the first main function unit of the analysis result. The first main function unit, the second main function unit, and the resource are communicably connected. The resource receives the processing message from the first main function unit and processes it.

  In such a configuration, the second main function unit determines the resource load based on the estimated accumulated traveling time value obtained by accumulating the estimated processing time of the processing message transmitted from the first main function unit to the resource for each resource. Determine the amount for each resource. Then, the second main function unit sets the congestion degree indicating the degree of congestion in the resource based on the determined load amount to the first state, the second state where the congestion degree is higher than the first state, And it determines for every said resource as either of the 3rd states whose congestion degree is higher than a 2nd state. In contrast with the first embodiment, the first state is “non-congested state (low congestion)”, the second state is “non-congested state (semi-congested)”, and the third state is “congested state”. Each corresponds. The second main function unit notifies the first main function unit of the congestion level determination result as a congestion level notification. Then, the first main function unit processes the processing message addressed to the corresponding resource based on the determination result of the congestion level included in the congestion level notification. Here, in the processing of the processing message based on the determination result of the congestion level in the first main function unit, for example, the discard processing based on the importance level of the processing message and the transmission of the processing message based on the determination result of the congestion continuation state Changes to previous resources (ie, resource reallocation) are included.

  The information processing apparatus according to the second embodiment having such a configuration also processes the processing message based on the determination result of the degree of congestion, thereby reducing the resource load of the slave function unit group having a high degree of congestion. The processing efficiency of the entire processing apparatus can be improved.

  Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes 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.

DESCRIPTION OF SYMBOLS 10 Information processing apparatus 11 Main function part 11-1 Current main function part 11-2 Backup main function part 12-14 Secondary function part group 12-1 to 12-n Resource

Claims (7)

A first main functional unit that controls transmission of a processing message;
A second main function unit that is connected to the first main function unit and can communicate with the first main function unit, which analyzes the processing message and notifies the first main function unit of the analysis result. When,
A slave function unit group including resources that are communicably connected to the first and second main function units, and that receive and process the processing message from the first main function unit;
The second main function unit includes:
Determining the load amount of the resource for each resource based on an estimated accumulated travel time value obtained by accumulating the estimated processing time of the processing message transmitted from the first main function unit to the resource for each resource;
Based on the determination result of the load amount, the degree of congestion indicating the degree of congestion in the resource is set to a first state, a second state having a higher degree of congestion than the first state, and the second state. For each of the resources as one of the third states with higher congestion than
Notifying the first main function unit with the determination result of the congestion level as a congestion level notification,
The first main function unit includes:
Processing the processing message addressed to the corresponding resource based on the determination result of the congestion level included in the congestion level notification;
Information processing device.   The first main function unit determines the continuation state of the first state and the continuation state of the third state of the congestion degree of the resource based on the determination result of the congestion degree included in the congestion degree notification. When it is determined for each resource, and there is the resource for which the third state is determined to be continued and the resource for which the first state is determined to be continued, the third state The information processing apparatus according to claim 1, wherein processing of the resource determined to be in a state is assigned to the resource determined to be in the first state.   The first main function unit further determines a continuation state of the second state for each resource, and determines that the resource in which the third state is continued is determined as the third state. The information processing apparatus according to claim 2, wherein the information processing apparatus is excluded from assignment of processing of the resource determined to be continued.   The first main function unit determines the importance of the processing message in a plurality of stages, and the importance is a predetermined stage when the congestion included in the congestion notification is higher than a predetermined state. The information processing apparatus according to claim 1, wherein the processing message determined to be lower than the processing message is discarded. The second main function unit includes:
Based on the estimated cumulative travel time value, the load amount is a first load amount, a second load amount that is higher than the first load amount, and a second load amount. Determine for each of the resources as one of the third loads with a high load,
Determining the degree of congestion for each resource based on the current load amount and the degree of congestion determined in the past;
The information processing apparatus according to claim 1. Based on the estimated accumulated travel time value obtained by accumulating the estimated processing time of the processing message transmitted from the first main function unit to the resource for each resource, the load amount of the resource is determined for each resource,
Based on the load amount, the degree of congestion indicating the degree of congestion in the resource is set to the first state, the second state having a higher degree of congestion than the first state, and the congestion degree higher than the second state. Determine for each of the resources as one of the higher third states,
Notifying the determination result of the congestion level as a congestion level notification,
Processing the processing message addressed to the corresponding resource based on the determination result of the congestion level included in the congestion level notification;
A method for controlling an information processing apparatus. In the computer provided in the information processing device,
A procedure for determining the load amount of the resource for each resource based on an estimated accumulated traveling time value obtained by accumulating the estimated processing time of a processing message transmitted from the first main function unit to the resource for each resource;
Based on the load amount, the degree of congestion indicating the degree of congestion in the resource is set to the first state, the second state having a higher degree of congestion than the first state, and the congestion degree higher than the second state. A procedure for determining for each of the resources as one of the high third states,
A procedure for notifying the determination result of the congestion level as a congestion level notification;
A procedure for processing the processing message addressed to the corresponding resource based on the determination result of the congestion level included in the congestion level notification;
Control program for information processing apparatus for executing

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