JPH11175449A - Server device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a server device, and more particularly to a server device that distributes data to a terminal device according to a state. SOLUTION: In a server device for distributing data stored in a storage device 102 to a plurality of terminal devices connected via a network 100, a state detecting means 110 for detecting a state of the server device, Means 110
A distribution information determining unit 103 for determining distribution performance information based on the information detected by the distribution information determining unit 103, and a distribution information holding unit 104 for storing the distribution performance information determined by the distribution information determining unit 103
And a data distribution unit 105 that distributes data to the terminal device based on the distribution performance information held by the distribution information holding unit 104. Therefore, when the state of the server device changes, the distribution performance information is changed, so that data distribution according to the state of the server device can be performed, so that data can be distributed more reliably. .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a server device and, more particularly, to a server device for distributing data to a terminal device according to a state.

[0002]

2. Description of the Related Art In recent years, a large-scale video network server system for distributing data to a plurality of terminal devices connected via a network has become possible due to image compression technology and computer performance enhancement. Was.

In general, to construct a server system,
It is necessary for the server device to determine the number of terminal devices that distribute data according to the state of the server device. FIG.
Is a configuration diagram of a conventional server device, and the configuration will be described below together with the operation.

[0004] Data distribution means 153 of the server device
Can be distributed to a terminal device that is set in consideration of system performance such as the disk configuration and performance of the storage device 151, network capacity, and data bus performance when the system held by the performance information holding unit 152 is built. "Total rate"
Alternatively, the distribution performance information such as “rate per unit × number” is referred to at the time of activation, stored in the distribution information storage unit 154 of the data distribution unit 153, and stored in the storage device 151 based on the distribution performance information. The distributed data is distributed to each terminal device connected via the network interface 150 and the network 155.

[0005]

However, in the above configuration, the distribution performance information of the server device is determined at the time of constructing the server system. Therefore, once the system is constructed, the operating state of the server device is changed. Even in the case of a change, a frequent occurrence of a failure in the storage device, or even a change in the system configuration, the operation has been continued with the distribution performance information at the time of system construction.

[0006] As described above, if the operation is continued without considering the state change of the server device, there is a problem that data distribution to the terminal device becomes impossible or the distributed data is interrupted. With video data that requires reliability, the reliability of the distribution image cannot be ensured.

On the other hand, when the performance of the server apparatus is improved due to a change in the state, the performance is not sufficiently exhibited, and there is a problem that the operation can be continued in an inefficient system.

[0008] The present invention has been proposed in view of the above-described circumstances, and can sufficiently exhibit the performance of a system, and can reliably distribute data to the terminal device and improve data quality. It is an object to provide a simple server device.

[0009]

The present invention employs the following means to achieve the above object. That is, to a plurality of terminal devices connected via the network 100,
In a server device that distributes data stored in the storage device 102, a state detection unit 110 that detects a state of the server device, and distribution information determination that determines distribution performance information based on information detected by the state detection unit 110 Part 103
A distribution information holding unit 104 that holds the distribution performance information determined by the distribution information determination unit 103, and data that distributes data to the terminal device based on the distribution performance information held by the distribution information holding unit 104 A configuration including the distribution means 105 is adopted.

The status detecting means 110 includes an operating status obtaining unit 111 for obtaining the operating status of the server device, a fault information detecting unit 112 for detecting fault information of the storage device 102,
It comprises at least one or more of the configuration information detection units 113 for detecting information on the system configuration of the server device.

Therefore, even when the state of the server device changes, the distribution performance information for data distribution can be changed without re-executing the initial setting work performed at the time of constructing the system. In addition, it is possible to perform an operation based on the distribution performance information after the change according to the state of the server device.

Further, in addition to the above configuration, there is provided a performance information measuring unit 121 for measuring the performance of the storage device in accordance with an instruction of the distribution information determining unit 103.
The distribution information determination unit can determine the distribution performance information based on the result of the measurement of the information and the information detected by the state detection unit 110.

Therefore, when a change occurs in the state of the server device, the distribution performance information can be changed based on the measurement result of the performance of the storage device 101, the operating state, and the system configuration. By performing the distribution based on the distribution performance information after the change, it is possible to perform an operation adapted to the state of the server device.

In a server device for distributing data stored in a storage device to a plurality of terminal devices connected via a network, periodic performance information for measuring the performance of the storage device at predetermined time intervals. Measuring unit 1
22 and an operation status acquisition unit 111 for acquiring an operation status of the server device according to an instruction of the periodic performance information measurement unit 122
A configuration information detection unit 113 that detects information on the system configuration of the server device in accordance with an instruction from the periodic performance information measurement unit 122; a result measured by the periodic performance information measurement unit 122; A distribution information determination unit 103 that determines distribution performance information based on information acquired by the configuration information detection unit 113, and the distribution information determination unit 1
03, a distribution information holding unit 104 that holds the distribution performance information determined, and a data distribution unit 105 that distributes data to the terminal device based on the distribution performance information held by the distribution information holding unit 104. The configuration is also adopted.

Therefore, the performance of the storage device 101 of the server device is measured and the operating state and the system configuration are acquired at predetermined time intervals. Therefore, when the status of the server device changes, By changing the distribution performance information for data distribution, an operation based on the state of the server device can be performed within a predetermined time.

Further, in addition to the above components, a distribution information notifying unit 123 for notifying the data distribution unit 105 of the change when the distribution information determining unit 103 changes the distribution performance information is provided. The means 105 is provided with a delivery information storage unit 106 for storing the delivery performance information, and the data delivery unit 105 refers to the delivery performance information held by the delivery information holding unit 104 only when the notification is received, and performs the delivery. A configuration in which the information is stored in the information storage unit 106 is also possible.

Thus, the data distribution means 10
5 only needs to refer to the distribution information holding unit 104 when the update notification is received, and it is not necessary to always refer to the distribution information holding unit 104.

[0018]

FIG. 1 is a block diagram showing an embodiment of a server device according to the present invention. FIG. 2 shows a server device of this embodiment which distributes data to a terminal device. FIG. 3 is a flowchart showing the operation when the state of the server device changes. Hereinafter, the configuration and the operation of the video network server device will be described with reference to the drawings, taking the case where a video network server device is used as the server device as an example.

The data distribution means 105 of the video network server device refers to the distribution performance information held by the distribution information holding unit 104 at the time of startup, and stores it in the distribution information storage unit 106 of the data distribution means 105 (FIG. Two steps S201). The distribution information holding unit 104 includes:
Initially, a total rate that can be delivered to the terminal device is set in consideration of system performance such as the configuration and performance of the disk of the storage device 101, the capacity of the network, and the performance of the data bus at the time of system construction. It is stored as the distribution performance information. In the present embodiment, the total rate is used as the distribution performance information. Instead, for example, “rate per unit × number of units” may be used.

Next, the data distribution unit 105 connects the data stored in the storage device 101 based on the distribution performance information stored in the distribution information storage unit 106 via the network interface 102 and the network 100. It is distributed to each terminal device. That is, if the total rate currently being distributed to the terminal device does not exceed the total rate of the distribution performance information, data is normally distributed to the terminal device (step S202 → S203). In addition, if the number of terminals exceeds the total rate of the distribution performance information, the terminal does not distribute data to the other terminals during the data distribution. On the other hand, data distribution is performed as before (steps S202 → S204 → S203).

The terminal device that does not perform the data distribution is determined by, for example, determining the priority order in the order in which the data distribution requests are made, and selecting the terminal device having the lower priority order. be able to.

During the data distribution as described above, the operating status acquisition unit 111 of the status detecting means 110 obtains the operating status of the video network server device, such as the CPU operating ratio and the memory usage ratio, and sets the operating status in advance. When the CPU deviates from the range of the CPU operating rate or the memory usage rate that has been set or returns to the range, the distribution information determining unit 1
03 is notified of the operating state.

Further, the failure information detecting unit 112 of the state detecting unit 110 monitors the reading unit of the storage device 101 so that, for example, the access speed of a disk constituting the storage device 101 becomes slow or a specific disk , And a failure such as reading or writing of data while recovering the data using another disk (usually a disk dedicated to a parity code) is detected. Notify.

The configuration information detection unit 113 of the status detection unit 110 includes, for example, a memory of the video network server device, a disk configuration of the storage device 101,
When the information of the system configuration such as the bandwidth indicating the permissible amount of the network to be used is detected and there is a change, the distribution information determining unit 103 is notified (step S301 in FIG. 3).

Here, when the operating status acquisition unit 111 detects a change in the operating status as described above and notifies the distribution information determining unit 103 of the operating status, the distribution information determining unit 103 receives the notification. The total rate that can be distributed to the terminal device, that is, the distribution performance information is determined based on the operating state and the system performance set at the time of system construction. This determination is made by using a table storing the increase / decrease with respect to the total rate set at the time of system construction according to the above-mentioned operating state, or by a method which is calculated by a predetermined formula based on the above-mentioned operating state and the above-mentioned system performance. Etc., and is not particularly limited. It is also possible to obtain the information of the system configuration from the configuration information detection unit 113 at the time of the determination and determine the distribution performance information in consideration of the system configuration.

When the fault information detecting unit 112 detects a fault as described above and notifies the distribution information determining unit 103, the distribution information determining unit 103 sets the fault notification and the setting at the time of system construction. The total rate that can be distributed to the terminal device, that is, the distribution performance information is determined based on the system performance. This determination can also be made in the same manner as in the case of the notification by the operation status acquisition unit 111, and the operation status acquisition unit 111 transmits the operation status, and the configuration information detection unit 113 transmits the system configuration information. To obtain the distribution performance information in consideration of the system configuration and the operation state.

When the configuration information detection unit 113 detects a change in the system configuration as described above and notifies the distribution information determination unit 103, the distribution information determination unit 103
The total rate that can be distributed to the terminal device, that is, the distribution performance information is determined based on the notified change in the system configuration and the system performance set at the time of system construction (step S302). Regarding this decision,
The notification can be performed in the same manner as in the case of the notification by the operation status acquisition unit 111.
It is also possible to acquire the operation status and determine the distribution performance information in consideration of the operation status.

Next, the distribution information determining unit 103 stores the distribution performance information determined as described above in the distribution information holding unit 10.
4 and updates the distribution performance information held in the distribution information holding unit 104 to the distribution performance information determined as described above (steps S303 → S304). ). However, the distribution performance information determined by the distribution information determining unit 103 and the distribution performance information held by the distribution information holding unit 104 may not be compared, and may be constantly updated.

Therefore, at the time of the next start-up, the data distribution means 105 is connected to the distribution information holding unit 10 as described above.
4 refers to the distribution performance information held and stores the distribution performance information in the distribution information storage unit 106. Therefore, when the distribution performance information is updated, data distribution is performed based on the updated distribution performance information. .

As described above, this embodiment shows an example in which the state detecting means 110 is constituted by the operating state acquiring section 111, the fault information detecting section 112, and the configuration information detecting section 113. Is the operating state acquisition unit 11
1, the failure information detection unit 112, the configuration information detection unit 1
It is also possible to configure any one or two of the thirteen.

As described above, according to the present embodiment, even when the operating state such as the CPU operating rate or the memory usage rate of the video network server device changes, the storage device connected to the video network server device can be used. Even if a failure occurs, or if a new device such as a memory or disk is added to the video network server device, the above-mentioned distribution performance for data distribution can be performed without re-executing the initial setting work performed at the time of system construction. The information can be changed, and at the time of restart, operation based on the changed distribution performance information according to the state of the video network server device can be performed. [Embodiment 2] Next, FIG. 4 is a block diagram showing another embodiment of the server apparatus of the present invention. FIG. 5 shows the operation of the server apparatus of this embodiment when distributing data to a terminal apparatus. It is a flowchart which shows. Hereinafter, the configuration and the operation of the video network server device will be described with reference to the drawings, taking the case where a video network server device is used as the server device as an example. However, the description of the same configuration and operation as in the first embodiment will be omitted.

Also in this embodiment, data distribution is performed in the same manner as in the first embodiment, and the operating status acquisition unit 111, the fault information detection unit 112, or the configuration information of the status detection unit is used. The operation from the detection of the failure or the change in the state by the detection unit 113 to the notification to the distribution information determination unit 103 is performed in the same manner as in the first embodiment (step S40 in FIG. 5).
1).

Here, the distribution information determining unit 103 that has received the notification instructs the performance information measuring unit 121 to measure the performance of the storage device 101. Upon receiving the instruction, the performance information measuring unit 121 stores the storage device 101 necessary for accurately determining the distribution performance information.
Of the disk seek time, and notifies the distribution information determination unit 103 of the measurement result (step S40).
2).

Further, when the notification of the detection of the state change is from the operating state acquisition unit 111, the information of the system configuration is acquired from the configuration information detection unit 113, and the information is received from the failure information detection unit 112. In this case, the operating status is obtained from the operating status obtaining unit 111 and the system configuration information is obtained from the configuration information detecting unit 113. If the operating status is obtained from the configuration information detecting unit 113, the operating status is obtained from the operating status obtaining unit 111. Are acquired (step S403).

Next, the distribution information determining unit 103 calculates the total rate that can be distributed to the terminal device based on the notified seek time, the operating state, the system configuration, and the system performance set at the time of system construction. That is, the distribution performance information is determined (step S404).
This determination is made by a method using a table storing an increase / decrease in the total rate set at the time of system construction according to the operating state and the seek time, or is determined in advance based on the seek time, the operating state and the system performance. It can be performed by a method of calculating using a given calculation formula, and is not particularly limited.

Next, the distribution information determining unit 103 stores the distribution performance information determined as described above in the distribution information holding unit 10.
4 and updates the distribution performance information held in the distribution information holding unit 104 to the distribution performance information determined as described above (steps S405 → S406). ).

The subsequent data distribution operation is the same as in the first embodiment. As described above, according to the present embodiment, when a change occurs in the state of the video network server device, the performance of the storage device is measured, and based on the measurement result, the operation state, and the system configuration, Since the distribution performance information is changed, it is possible to perform an operation adapted to the state of the video network server device by performing distribution based on the distribution performance information after the change. [Embodiment 3] FIG. 6 is a block diagram showing another embodiment of the server apparatus of the present invention.
FIG. 7 is a flowchart illustrating an operation when the server device of this embodiment distributes data to a terminal device. Hereinafter, the configuration and the operation of the video network server device will be described with reference to the drawings, taking the case where a video network server device is used as the server device as an example.

The data distribution means 105 of the video network server device refers to the distribution performance information held by the distribution information holding unit 104 at the time of startup and stores it in the distribution information storage unit 106 of the data distribution means 105. The data stored in the storage device 101 is distributed to each terminal device connected via the network interface 102 and the network 100 based on the distribution performance information stored in the distribution information storage unit 106.

During such data distribution, the periodic performance information measuring unit 122 stores the data in the same manner as the performance information measuring unit 121 at predetermined time intervals irrespective of the state of the video network server device. The seek time of the disk of the device 101 is measured, and the operation state acquisition unit 111 is instructed to acquire the operation state, and the configuration information detection unit 113 is instructed to acquire the system configuration information (step S501 in FIG. 7). . Upon receiving the instruction, the operation state acquisition unit 111 acquires the operation state of the video network server device, such as the CPU operation rate and the memory usage rate, and notifies the periodic performance information measurement unit 122 of the operation state. (Step S502). Upon receiving the instruction, the configuration information detection unit 113 detects system configuration information such as a memory of the video network server device, a disk configuration of the storage device 101, and a bandwidth indicating an allowable amount of a network to be used. Then, the system configuration is notified to the periodic performance information measuring unit 122 (step S503). The periodic performance information measurement unit 122 notifies the distribution information determination unit 103 of the measurement result of the seek time of the disk of the storage device 101, the operating state, and the system configuration (step S504).

Next, the distribution information determination unit 103 determines the total rate that can be distributed to the terminal device, that is, the distribution performance information based on the notified seek time, the operating state, and the system configuration ( Step S
505).

Next, the distribution information determining unit 103 compares the distribution performance information determined as described above with the distribution performance information held by the distribution information holding unit 104. The distribution performance information stored and updated is updated to the distribution performance information determined as described above (step S506 → S507).

When the update instruction is issued, a notification to the effect that the update has been made is also sent to the distribution information notification unit 123 at the same time. The distribution information notification unit 123 notifies the data distribution unit 105 that the distribution performance information stored in the distribution information storage unit 104 has been updated (step S508).

Next, upon receiving the update notification from the distribution information notifying unit 123, the data distribution unit 105 refers to the distribution performance information held by the distribution information holding unit 104 and stores it in the distribution information storage unit 106. Store (Step S50)
9). Therefore, when the distribution performance information is updated,
The data distribution unit 105 is provided in the distribution information storage unit 10.
6, the data distribution is performed based on the updated distribution performance information. That is, if the total rate currently being distributed to the terminal device does not exceed the total rate of the new distribution performance information, data is normally distributed to the terminal device (steps S510 → S511). Also, if the number of terminals exceeds the total rate of the new distribution performance information, the terminal does not perform data distribution to the number of terminals that are in excess of the total rate of the new distribution performance information. Is delivered as before (steps S510 → S512 → S511). The determination of the terminal device that does not perform the data distribution is the same as that in the first embodiment.

Further, after the lapse of the predetermined time, the periodic performance information measuring section 122 measures the performance of the storage device 101 as described above (step S513 → S501), and thereafter repeats the above operation.

In this embodiment, the failure information detecting unit 112 is not provided unlike the above embodiments, but the periodic performance information measuring unit 122 measures the seek time of the disk of the storage device 101. Therefore, the storage device 101
Will be reflected in the determination of the delivery performance information.

As described above, according to the present embodiment, the performance of the storage device 101 of the video network server device is measured and the operating state and the system configuration are acquired at regular time intervals. By changing the distribution performance information for data distribution when the state of the apparatus has changed, it is possible to perform an operation based on the state of the video network server apparatus within a predetermined time. .

The configuration in which the distribution information notification section 123 is provided is not limited to the present embodiment, but can be provided in the configurations of the first and second embodiments. At this time, the data distribution means 105
Refers to the distribution information holding unit 104 at the time of activation and when the notification is received from the distribution information notification unit 123.

In the configuration of the first and second embodiments, the distribution information storage unit 106 is provided in the data distribution unit 105, and the distribution information holding unit 104 is referred to at the time of startup. Alternatively, the data distribution unit 105 may refer to the distribution information holding unit 104 in each time slot period for reading out a certain amount of data within a certain time.

[0049]

As described above, according to the present invention, by detecting the operating state of a server device, a failure of a storage device, and a change in system configuration, the distribution performance information for data distribution is changed, Even if the operating state changes or the storage device fails, the system can be stopped or data can be distributed to the terminal device according to the state without delaying data distribution to the terminal device. As a result, more reliable data distribution is possible. Further, since a more efficient system operation corresponding to the change in the system configuration can be performed, the practical effect is large.

When the change in the operating state, the failure in the storage device, and the change in the system configuration are detected, the performance of the storage device is actually measured, and based on the measurement result, the operating state and the system configuration. By delivering data to the terminal, it is possible to operate the system more reliably even in the event of a change in the operating state, a failure in the storage device, or a change in the system configuration that could not be predicted in advance. The effect is great.

Further, by measuring the performance of the storage device, the operating state, and the system configuration of the server device at regular intervals, a change in the operating state, a failure of the storage device, and a system configuration that cannot be predicted in advance can be obtained. Even when changes occur, more reliable system operation becomes possible,
Its practical effect is great.

Further, by providing the distribution information storage unit in the distribution information notification unit and the data distribution unit, the data distribution unit does not need to always refer to the distribution information holding unit. Performance is also improved, and its practical effect is great.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a server device according to the present invention.

FIG. 2 is a flowchart showing an operation for each time slot period of the embodiment shown in FIG. 1;

FIG. 3 is a flowchart showing the operation of the embodiment shown in FIG. 1 when the system state changes.

FIG. 4 is a block diagram showing another embodiment of the server device according to the present invention.

FIG. 5 is a flowchart showing an operation of another embodiment shown in FIG.

FIG. 6 is a block diagram showing another embodiment of the server device according to the present invention.

FIG. 7 is a flowchart showing an operation of another embodiment shown in FIG. 6;

FIG. 8 is a block diagram of a conventional server device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 network 101 storage device 102 network interface 103 distribution information determination unit 104 distribution information holding unit 105 data distribution unit 106 distribution information storage unit 110 state detection unit 111 operating state acquisition unit 112 failure information detection unit 113 configuration information detection unit 121 performance information measurement Unit 122 periodic performance information measurement unit 123 distribution information notification unit

Claims (7)

[Claims] 1. A server device for distributing data stored in a storage device to a plurality of terminal devices connected via a network, wherein: a state detecting means for detecting a state of the server device; A distribution information determining unit that determines distribution performance information based on information to be detected, a distribution information holding unit that holds the distribution performance information determined by the distribution information determining unit, and a distribution performance that the distribution information holding unit holds A server device comprising: a data distribution unit that distributes data to the terminal device based on information. 2. The server device according to claim 1, wherein said status detection means comprises an operation status acquisition unit for acquiring an operation status of the server device. 3. The server device according to claim 1, wherein said status detecting means comprises a fault information detecting section for detecting fault information of said storage device. 4. The server device according to claim 1, wherein said status detecting means comprises a configuration information detecting section for detecting information on a system configuration of said server device. 5. A performance information measuring unit for measuring the performance of the storage device in accordance with an instruction of the distribution information determining unit, wherein the performance information measuring unit measures the performance based on a result measured by the performance information measuring unit and information detected by the state detecting means. The server device according to claim 1, wherein the distribution information determination unit determines the distribution performance information. 6. A server device for distributing data stored in a storage device to a plurality of terminal devices connected via a network, wherein periodic performance information for measuring the performance of the storage device at predetermined time intervals. A measurement unit; an operation status acquisition unit that acquires an operation status of the server device according to an instruction from the periodic performance information measurement unit; and configuration information that detects information on a system configuration of the server device according to an instruction from the periodic performance information measurement unit. A detection unit; a distribution information determination unit that determines distribution performance information based on a result measured by the periodic performance information measurement unit and information acquired by the operating state acquisition unit and the configuration information detection unit; A distribution information holding unit that holds the distribution performance information determined by the unit; and a data storage unit that stores data in the terminal device based on the distribution performance information held by the distribution information holding unit. And a data distribution means for distributing the data. 7. A delivery system, comprising: a delivery information notifying unit that notifies the data delivery unit of the change when the delivery information determination unit changes the delivery performance information; and a delivery that stores the delivery performance information in the data delivery unit. An information storage unit, wherein the data distribution unit refers to the distribution performance information held by the distribution information holding unit only when receiving the notification, and stores the information in the distribution information storage unit. The server device according to any one of the above.