JP2907273B2 - Polling control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polling control system, and more particularly, to a polling control system for polling a monitoring target having a continuously and constantly changing numerical value as monitoring data.

[0002]

2. Description of the Related Art When a plurality of monitoring targets are centrally monitored from a single monitoring device, polling is performed so that the monitoring device sequentially acquires monitoring data of the plurality of monitoring targets. The monitoring data acquired by the polling is notified to an administrator, and the administrator determines the state of the monitoring target from the monitoring data.

Generally, a polling control is performed in which a fixed polling interval is defined for each monitoring target and monitoring data is obtained from each monitoring target at each polling interval.
In performing such polling, the polling interval is variably controlled to reduce the number of times of data acquisition and to reduce the number of times of access to a network generated by a monitoring device to acquire monitoring data. There is a polling control method.

[0004] For example, as a conventional technique, Japanese Patent Laid-Open Publication No.
There is a polling control method described in Japanese Patent Application Laid-Open No. 19570. In this polling control method, data obtained by polling of a monitored control device by one monitor control device and two or more monitored control devices connected by a communication line is the same as the monitored control device. When there is no change compared with the data obtained by the previous polling of the device, the polling cycle for the monitored control device is set to 1 / N.

The polling control system described in Japanese Patent Application Laid-Open No. Hei 3-187644 measures the number of processing requests from each input device in a predetermined time in a system including a central processing unit and a plurality of input devices. And a means for changing the time interval of the inquiry according to the number of processing requests, and variably controls the polling interval so as to increase the number of polls for input / output devices with a high processing request frequency in a fixed time unit. is there.

[0006]

In the conventional polling control method described above, the polling interval is controlled based on the presence or absence of a change in the monitoring data and the frequency of the change in the monitoring data, that is, whether the monitoring data changes. Since there is no change, the polling interval cannot be controlled when the monitoring target has a continuously and constantly changing numerical value as the monitoring data because the monitoring data is constantly changing.

An object of the present invention is to provide a polling control method capable of variably controlling a polling interval for each monitoring target even when the monitoring target has a continuously and constantly changing numerical value as monitoring data. .

[0008]

According to the polling control method of the present invention, a monitoring data record for holding monitoring data to be monitored is provided.
Storage means and monitoring data obtained by constantly monitoring the monitoring target.
Data to be set in the monitoring data storage means.
A plurality of said monitoring targets comprising:
Polling control information that stores the polling interval for each event
Storage means and the polling control information storage means.
The monitoring data of the monitoring target at the polling interval
Polling means for acquiring monitoring data from storage means
And the monitoring data obtained by this polling means
Monitoring data notification means for notifying the administrator
The polling control information storage means
Polling interval control means for setting the polling interval for each column
Connected via a network to a monitoring device
In the polling control method, when the monitoring target has a continuously and constantly changing numerical value as monitoring data,
As the polling interval control means, utilizing the fact that the degree of urgency to be notified of monitoring data differs depending on the numerical value of monitoring data for each of the monitoring targets, the range of numerical values that can be taken by the monitoring data is determined in advance by a plurality of levels of urgency. Definition and the basic polling cycle corresponding to each divided urgency level
An urgency level definition storage means for storing an integral multiple of a polling interval; and a numerical value of the monitoring data obtained by the polling means is included in any of a plurality of urgency levels stored in the urgency level definition storage means. And a polling interval determining means for setting a polling interval defined corresponding to the urgency level as a counter value representing the next polling interval in the polling control information storage means , wherein the polling means comprises: , The polling control information
Search the monitoring target sequentially from the storage means and decrement the counter value by one
When the counter value is 1 or more, monitoring is performed from the monitoring target.
If the observation data is not acquired and the counter value is 0, the previous
Accessing the monitoring target via the network
Obtains monitoring data from the monitoring data storage means and
Basic polling for calling the ring interval determination means
All monitoring targets registered in the
Is repeatedly performed .

[0009]

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a polling control system according to one embodiment of the present invention. The main part of the polling control system according to the present embodiment includes a monitoring device 1 accessible via the network 4 and monitoring targets 2 and 3 accessible via the network 4.

The monitoring targets 2 and 3 are stored in the monitoring data storage unit 2
1 and 31 and monitoring data setting units 22 and 32.

The monitoring data storage units 21 and 31 include, for example,
As shown in FIGS. 2 and 3, the continuously and constantly changing numerical values of the monitoring targets 2 and 3 are stored as monitoring data.

The monitoring data setting units 22 and 32 set monitoring data obtained by constantly monitoring the monitoring targets 2 and 3 in the monitoring data storage units 21 and 31.

The monitoring device 1 has a polling control table 1
1, a polling unit 12, a polling interval control unit 13, and a monitoring data notification unit 14.

The polling control table 11 stores a counter value for each of the monitoring targets 2 and 3. Here, the counter value is used to count the interval until the next monitoring data is obtained, and is given as the number of basic polling cycles.

The polling interval control means 13 comprises an urgency definition table 131 and a polling interval determination means 132.

As shown in FIG. 4, for example, the urgency definition table 131 includes a definition for dividing a range of numerical values that can be taken by the monitoring data for each of the monitoring targets 2 and 3 into a plurality of urgency levels, and The polling intervals corresponding to the respective urgency levels are stored. Here, the polling interval is given as the number of basic polling periods. The method of dividing the urgency level and the setting of the polling interval corresponding thereto are defined in advance in consideration of the characteristics of the monitoring targets 2 and 3.

For example, consider the remaining disk capacity as the monitoring targets 2 and 3. The range that the monitoring data can take is 0 to disk capacity. In a state where the monitoring data, that is, the remaining disk space is extremely large, the urgency of notifying the monitoring data is low, and the polling interval may be long. On the other hand, in a state where the remaining disk capacity is close to 0, there is a risk that the capacity of the disk may become insufficient. Monitoring data indicating this state needs to be urgently notified, and the polling interval must be short.

Referring to FIG. 5, the basic polling process of the polling means 12 is performed in a monitoring target name acquisition step S1.
01, a counter value 1 subtraction step S102, a counter value 0 determination step S103, a monitoring data acquisition step S104, a polling interval determination unit calling step S105, and a monitoring target termination determination step S106.

Referring to FIG. 6, the polling interval determination means 132 includes a monitoring target name search step S201, an urgency level determination step S202, a polling interval determination step S203, and a counter value setting step S204.

Next, the operation of the polling control system according to the present embodiment configured as described above will be described with reference to FIGS.

First, the monitoring data setting units 22 and 32 of the monitoring targets 2 and 3 set monitoring data obtained by constantly monitoring the monitoring targets 2 and 3 in the monitoring data storage units 21 and 31.
These processes are performed asynchronously with the processes of the monitoring device 1. Here, it is assumed that the monitoring data of the monitoring targets 2 and 3 are numerical values that change continuously and constantly as shown in the graphs of FIGS.

Next, in the monitoring device 1, the polling means 12 acquires monitoring target names sequentially from the head entry of the polling control table 11 (step S101), and decrements the counter value by one (step S102).

Subsequently, the polling means 12 determines whether the counter value is 0 or not (step S103). If the counter value is 1 or more, the polling means 12 does not acquire monitoring data from the monitoring targets 2 and 3, The control is shifted to S106.

When the counter value is 0, the polling means 12 accesses the monitoring targets 2 and 3 via the network 4 and acquires monitoring data from the monitoring data storage units 21 and 31 (step S104).

When the monitoring data has been obtained, the polling means 12 calls the polling interval determination means 132 using the monitoring target name and the obtained monitoring data as parameters (step S105).

The polling interval determination means 132 searches for a monitoring target name from the urgency definition table 131 (step S).
201).

Next, the polling interval determination means 132
The definition of the urgency level corresponding to the searched monitoring target name and the acquired monitoring data are compared numerically to find out which urgency level the acquired monitoring data is included in (Step S202).

Subsequently, the polling interval determining means 132
Determines the polling interval corresponding to the urgency level including the acquired monitoring data as the next polling interval (step S203).

Further, the polling interval determining means 132
Is the polling control table 1
The counter value is set as the counter value corresponding to the 1 monitoring target name (step S204), and the control is returned to the polling unit 12.

The polling means 12 repeats the above processing for all the monitoring targets 2 and 3 registered in the polling control table 11 (step S106).

The above processing is called basic polling.

The polling means 12 performs basic polling in a basic polling cycle. Here, the basic polling cycle needs to be a time sufficient for completing the basic polling.

Next, the operation of the polling control system according to the present embodiment will be described in more detail using a specific example. Here, a case where polling is performed on the monitoring target A and the monitoring target B will be described as an example.

The monitoring data of the monitoring target A is as shown in FIG.
It is assumed that the monitoring data of the monitoring target B fluctuates as shown in FIG. Note that the horizontal axis corresponds to the number of times of basic polling in this specific example, and also corresponds to the time chart of FIG. 8 and the counter value of FIG.

Next, the urgency definition table 131 is shown in FIG.
It is assumed to be defined as

Here, the monitoring target A is examined. The range of values that can be taken by the monitoring data of the monitoring target A is 0 to 9999.
This is divided into three levels of urgency: 0-999,10
It is divided into 00 to 1999 and 2000 to 9999.
The polling intervals corresponding to the respective urgency levels are defined as 5, 2, and 1.

Similarly, the range of values that can be taken by the monitoring data of the monitoring target B is 0 to 100.
It is divided into 50-100 emergency levels. Further, 2, 1 is defined as a polling interval corresponding to each urgency level.

Next, FIG. 7 shows a polling control table 1.
1 counter value (hereinafter, the counter value for the monitoring target A is N, and the counter value for the monitoring target B is M)
However, in this specific example, how it changes is shown in time series.

In the places where the counter values N and M are shaded, as a result of subtracting 1 from the counter values N and M, the value becomes 0, so that monitoring data is obtained, and further a new polling interval is set. Indicates that it has been set. Here, the description will be made from the state where the monitoring data is obtained for both the monitoring target A and the monitoring target B and the counter values N and M are newly set to 5 and 2, respectively.

First, the polling means 12 starts the first basic polling.

The polling means 12 acquires the monitoring target name of the monitoring target A from the polling control table 11 (step S101), and decrements the counter value N by 1 (step S102). Since the counter value N is 4, the polling unit 12 does not acquire monitoring data from the monitoring target A.

Subsequently, the polling means 12 acquires the monitoring target name of the monitoring target B from the polling control table 11 (step S101), and decrements the counter value M by 1 (step S102). Since the counter value M is 1,
The polling unit 12 does not acquire monitoring data from the monitoring target B.

The above is the first basic polling.

Next, the second basic polling is performed after the basic polling cycle.

The polling means 12 acquires the monitoring target name of the monitoring target A from the polling control table 11 (step S101), and decrements the counter value N by 1 (step S102). Since the counter value N is 3, the polling means 12 does not acquire data from the monitoring target A.

Subsequently, the polling means 12 acquires the monitoring target name of the monitoring target B from the polling control table 11 (step S101), and decrements the counter value M by 1 (step S102). Since the counter value M becomes 0,
The polling unit 12 acquires monitoring data from the monitoring target B (Step S104). At this time, the value of the monitoring data of the monitoring target B is 20. That is, it is the value of the monitoring data corresponding to the number 2 of the basic polling in FIG.

Here, the polling means 12 calls the polling interval determination means 132 using the monitoring target name of the monitoring target B and the obtained monitoring data 20 as parameters (step S105).

The polling interval determination means 132 searches for the monitoring target B from the urgency definition table 131 (step S).
201). Next, the polling interval determination unit 132 obtains the urgency level of the acquired monitoring data 20 by numerical comparison (step S202). The acquired monitoring data 20 corresponds to the urgency definition table 1 in FIG.
Referring to FIG. 31, it is included in the urgency stages of 0 to 49. The polling interval corresponding to this urgency level is 2.

Next, the polling interval determination means 132
The polling interval 2 is set as the next polling interval of the monitoring target B (step S203), and the counter value M of the monitoring target B in the polling control table 11 is set (step S204).

The above is the second basic polling.

FIG. 8 shows a time chart when the above is repeated up to the fifteenth basic polling.

FIG. 9 is a time chart when the same operation is performed with a fixed polling interval.

The polling interval is set to 1 for the highest urgency level.

A comparison of the time charts of FIGS. 8 and 9 shows that when the polling interval is fixed, the monitoring data is acquired 32 times in total for the monitoring target A and the monitoring target B. 1 when the polling interval is variably controlled by the polling control method according to the embodiment.
The monitoring data has been acquired seven times.

As a result, the number of accesses to the network 4 generated by the monitoring apparatus 1 when acquiring monitoring data can be significantly reduced.

[0057]

As described above, the polling control method according to the present invention makes use of the fact that the degree of urgency to notify monitoring data differs depending on the value of monitoring data for each monitoring target.
A definition for dividing a range of numerical values that can be taken by monitoring data in advance into a plurality of urgency levels, an urgency definition storage unit for storing a polling interval corresponding to each of the divided urgency stages, and an acquisition by the polling unit Of the plurality of urgency levels stored in the urgency level definition storage means, and checks the polling interval defined corresponding to the urgency level for the next polling. By providing the polling interval determining means for setting the polling control information storage means as the interval, the polling interval is variably controlled for each monitoring target even when the monitoring target has a continuously and constantly changing numerical value as the monitoring data. And the number of network accesses that occur when the monitoring device acquires monitoring data to be monitored can be reduced. There is.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a polling control method according to an embodiment of the present invention.

FIG. 2 is a graph showing an example of continuous and constantly changing monitoring data of a monitoring target in FIG. 1;

FIG. 3 is a graph showing another example of continuously and constantly changing monitoring data of a monitoring target in FIG. 1;

FIG. 4 is a diagram showing a setting example of an emergency definition table in FIG. 1;

FIG. 5 is a flowchart showing basic polling processing by a polling unit in FIG. 1;

FIG. 6 is a flowchart showing a process of a polling interval determination unit in FIG. 1;

FIG. 7 is a diagram showing a process in which the counter value of the polling control table in FIG. 1 changes in a time series.

FIG. 8 is a time chart when the polling interval is variably controlled by the polling control method according to the present embodiment.

FIG. 9 is a time chart when the polling interval is fixed as in the conventional polling control method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Monitoring apparatus 2, 3 Monitoring target 4 Network 11 Polling control table 12 Polling means 13 Polling interval control means 14 Monitoring data notification means 21, 31, Monitoring data storage unit 22, 32 Monitoring data setting unit 131 Urgency definition table 132 Polling interval determination Means S101 Monitoring target name obtaining step S102 Counter value 1 decrementing step S103 Counter value 0 determining step S104 Monitoring data obtaining step S105 Polling interval determining means calling step S106 Monitoring target end determining step S201 Monitoring target name searching step S202 Urgency level determining step S203 Polling interval determination step S204 Counter value setting step

Claims (2)

(57) [Claims] 1. A plurality comprising the monitoring data storage means for storing the monitoring data monitored, a monitoring data setting means for setting the monitoring data obtained by monitoring the monitoring target constantly on the monitoring data storage means The monitoring target , polling control information storage means for storing a polling interval for each monitoring target, and monitoring data from the monitoring data storage means for the monitoring target at the polling interval stored in the polling control information storage means. A polling unit for acquiring, a monitoring data notifying unit for notifying an administrator of the monitoring data acquired by the polling unit, and a polling for setting a polling interval in the polling control information storage unit to obtain a next polling interval. A monitoring device having interval control means is connected via a network.
In the continued polling control method, when the monitoring target has a continuously and constantly changing numerical value as monitoring data, the polling interval control means should notify the monitoring data by the numerical value of the monitoring data for each monitoring target. Utilizing the different degrees, a definition for dividing the range of values that can be taken by the monitoring data in advance into a plurality of urgency levels and corresponding to each of the divided urgency levels
An urgency level definition storage means for storing a polling interval which is an integral multiple of the basic polling cycle; and Polling interval determining means for setting the polling interval defined corresponding to the level of urgency as a counter value indicating the next polling interval in the polling control information storage means comprising the door, said polling means, the polling control information storing hand
Search the monitoring target in order from the stage, subtract 1 from the counter value,
If the counter value is 1 or more, the monitoring data is
If the counter value is 0 without acquiring the data, the network
The monitoring target is accessed via a network to
Polling by acquiring monitoring data from data storage means
Basic polling for calling interval determination means
All monitoring targets registered in the
A polling control method characterized by repeated execution. 2. The polling control method according to claim 1, wherein said polling interval is controlled to be an integral multiple of a basic polling cycle.