CN103023701B - The analytical method of performance parameter and device in network management system - Google Patents
The analytical method of performance parameter and device in network management system Download PDFInfo
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Abstract
The invention discloses analytical method and the device of performance parameter in a kind of network management system, in order to reduce the error produced when network management system analyzes the performance parameter of each communication equipment, improve network management system to the accuracy of each communication equipment monitoring performance.The method is: the variable quantity determining performance parameter in current sample period, and determines the number of refresh cycle of the device register comprised in current sample period, and described device register is for storing the statistical value of described performance parameter; According to the variable quantity of the number of described refresh cycle comprised in the current sample period determined, the refresh cycle of device register and described performance parameter, calculate the rate of change of described performance parameter.
Description
Technical field
The present invention relates to communication technical field, particularly relate to analytical method and the device of performance parameter in a kind of network management system.
Background technology
At present, in communication network, network management system (abbreviation webmaster) is usually used to manage concentratedly each communication equipment in communication network.As shown in Figure 1, traditional network management system mainly comprises following five functional: configuration management, performance management, alarm management, maintenance management and safety management.
Wherein, performance management refers to that network management system periodically carries out monitoring and the analysis of performance parameter (such as offered load, flow etc.) to its communication equipment managed, help the operation conditions of administrative staff awareness network current and the past period, for the early warning of network failure, eliminating and the network optimization provide foundation.
In traditional network management system, when carrying out performance Parameter analysis, be generally adopt the data increment of performance parameter in the sampling interval divided by the sampling interval, thus draw the change of performance parameter in the unit interval, i.e. the rate of change of performance parameter.
Often there will be in practice, between the situation of change of the situation of change of the performance parameter that network management system analysis draws and the performance parameter of communication equipment reality, there is certain error, and along with the continuous reduction in sampling interval, this error constantly increases.The performance evaluation curve burr finally causing network management system analysis to draw is too many, and with communication equipment practical operation situation grave fault.
Summary of the invention
The invention provides analytical method and the device of performance parameter in a kind of network management system, in order to reduce the error produced when network management system analyzes the performance parameter of each communication equipment, improve network management system to the accuracy of each communication equipment monitoring performance.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
An analytical method for performance parameter in network management system, comprising:
Determine the variable quantity of performance parameter in current sample period, and determine the number of refresh cycle of the device register comprised in current sample period, described device register is for storing the statistical value of described performance parameter;
According to the variable quantity of the number of described refresh cycle comprised in the current sample period determined, the refresh cycle of device register and described performance parameter, calculate the rate of change of described performance parameter.
An analytical equipment for performance parameter in network management system, comprising:
Processing unit, for determining the variable quantity of performance parameter in current sample period, and determine the number of refresh cycle of the device register comprised in current sample period, described device register is for storing the statistical value of described performance parameter;
Determining unit, for the variable quantity according to the number of described refresh cycle comprised in the current sample period determined, the refresh cycle of device register and described performance parameter, calculates the rate of change of described performance parameter.
Based on technique scheme, in the embodiment of the present invention, by determining the number of the refresh cycle of the device register comprised in current sample period, the statistical value of performance parameter to be analyzed is stored in this device register, after the variable quantity determining performance parameter in current sample period, according to the number of the refresh cycle comprised in the current sample period determined, the refresh cycle of device register and the variable quantity of performance parameter, calculate the rate of change of performance parameter, thus avoid in existing performance parameter analytical method the error directly adopting sampling period compute performance parameters rate of change to bring, effectively reduce the error produced when network management system analyzes the performance parameter of each communication equipment, improve network management system to the accuracy of each communication equipment monitoring performance.
Accompanying drawing explanation
Fig. 1 is the fundamental block diagram of existing network management system managing communication devices;
The sampling process schematic diagram of performance parameter that Fig. 2 is the sampling period when being refresh cycle integral multiple;
Fig. 3 A be the sampling period be not refresh cycle integral multiple and the sampling period is greater than the refresh cycle time performance parameter sampling process schematic diagram;
Fig. 3 B be the sampling period be not refresh cycle integral multiple and the sampling period is greater than the refresh cycle time performance parameter sampling process schematic diagram;
Fig. 3 C be the sampling period be not refresh cycle integral multiple and the sampling period is greater than the refresh cycle time performance parameter sampling process schematic diagram;
Fig. 4 be the sampling period be not refresh cycle integral multiple and the sampling period is less than the refresh cycle time performance parameter sampling process schematic diagram;
Fig. 5 is the method detailed schematic flow sheet of performance Parameter analysis in the embodiment of the present invention;
Fig. 6 is the method flow diagram of specific embodiment of the invention middle port flow analysis;
Fig. 7 A is specific embodiment of the invention middle port flow curve schematic diagram;
Fig. 7 B is actual port flow change rate curve synoptic diagram in the specific embodiment of the invention;
Fig. 7 C is uncorrected port flow change rate curve schematic diagram in the specific embodiment of the invention;
Fig. 7 D is uncorrected port flow change rate curve schematic diagram in the specific embodiment of the invention;
Fig. 8 is the structural representation of the analytical equipment of performance parameter in the embodiment of the present invention.
Embodiment
Inventor finds by analyzing; the reason that traditional performance parameter analysis produces error is: the performance data of communication equipment performance parameter is stored in device register; for the protection to communication equipment; device register can not refresh in real time; but refresh according to certain cycle; when the refresh cycle of device register and the sampling interval of network management system inconsistent time, introduce error.
When network management system opens performance parameter monitoring function, first server reads the performance data of specified performance parameter from communication equipment, and stores refresh cycle of device register of performance data of this performance parameter.In the sampling period of the refresh cycle of server comparative apparatus register and the performance parameter of server collection communication equipment, there is following several situation:
A, when the sampling period of performance parameter is the integral multiple of the refresh cycle of device register, as shown in Figure 2, T1-Tn represents n sampling period, t1, t2 ... represent each refreshing moment, adjacent two time differences of refreshing between the moment are the refresh cycle, visible, in each sampling period, the refreshing frequency of device register is all identical, wherein, refreshing frequency equals the refresh cycle of sampling period divided by device register of performance parameter, the transformation period that now variable quantity (also can be described as the variable quantity of performance parameter in the sampling period) of the performance parameter of adjacent double sampling acquisition is corresponding and the sampling period of server match, there will not be error.
B, not the integral multiple of the refresh cycle of device register when the sampling period of performance parameter, and the sampling period is when being greater than the refresh cycle of device register, as shown in accompanying drawing 3A, accompanying drawing 3B and accompanying drawing 3C, T1-Tn represents n sampling period, t1, t2 ... represent each refreshing moment, adjacent two time differences of refreshing between the moment are the refresh cycle, and in each sampling period, the refreshing frequency of device register is not identical.In accompanying drawing 3A, in T1, T2 sampling period, device register refreshes 3 times, and in the T3 sampling period, device register refreshes 4 times; In accompanying drawing 3B, in T1, T3 sampling period, device register refreshes 3 times, and in the T2 sampling period, device register refreshes 4 times; In the T1 sampling period shown in accompanying drawing 3C, device register refreshes 4 times, and in T2, T3 sampling period, device register refreshes 3 times.Known ubiquity two kinds of situations by analysis: the first situation is the refreshing frequency of device register in the sampling period is just in time the business of sampling period divided by the refresh cycle gained of device register; The second situation is more than the first situation 1 time of the refreshing frequency of device register in the sampling period, the actual refreshing frequency for device register of the transformation period that in the now sampling period, the variable quantity of performance parameter is corresponding is multiplied by the refresh cycle, not identical with the sampling period of server, therefore can produce error.
C, when the sampling period of performance parameter is less than the refresh cycle of device register, as shown in Figure 4, T1-Tn represents n sampling period, t1, t2 ... represent each refreshing moment, adjacent two time differences of refreshing between the moment are the refresh cycle, within a sampling period, the refreshing frequency of device register is 0 time or 1 time, if the refreshing frequency of device register is 1 time in the sampling period, then in the sampling period, the variable quantity of performance parameter is the variable quantity that device register refreshes the performance parameter once, if the refreshing frequency of device register is 0 time in the sampling period, then in the sampling period, the variable quantity of performance parameter is 0.In accompanying drawing 4, in T1, T4 sampling period, the refreshing frequency of device register is 0 time, and in T2, T3 sampling period, the refreshing frequency of device register is 1 time.Visible, the transformation period that in the sampling period, the variable quantity of performance parameter is corresponding did not conform to the sampling period of server, therefore produced error.
According to above-mentioned analysis, in the embodiment of the present invention, provide the analytical method of performance parameter in a kind of network management system, the accuracy of network management system to the analysis of the performance parameter of communication equipment can be improved, reduce performance parameter analytical error.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described in detail.
As shown in Figure 5, in the embodiment of the present invention, the method detailed flow process that in network management system, the performance parameter of server to each communication equipment is analyzed is as follows:
Step 501: the variable quantity determining performance parameter in current sample period, and the number of refresh cycle determining the device register comprised in current sample period, this device register is for storing the statistical value of this performance parameter.
In the invention process, determining the variable quantity of performance parameter in current sample period, and before the number of refresh cycle determining the device register comprised in current sample period, the start-up time of the sampling period obtaining collection of server performance parameter and the device register storing this performance parameter, refresh cycle, and record the performance parameter statistics of each sampling instant and each sampling instant.
In a specific implementation, to adopt the network management system of Simple Network Management Protocol (SNMP), communication equipment in network management system is arranged following management information base (ManagementInformation Base, MIB) node: the MIB node of monitoring for the refresh cycle of the device register of memory property parameter is set on a communications device; The MIB node that monitoring is stored in the statistical information of the performance parameter in device register is set on a communications device; The start-up time of monitoring communications equipment is set on a communications device and monitors the MIB node of each sampling instant.
After the sampling period that performance parameter is set in network system, when starting sampling task to the performance parameter of communication equipment, the statistical value of performance parameter of start-up time of device register, refresh cycle, each sampling instant and each sampling instant can be obtained by each MIB node arranged above.
In the embodiment of the present invention, determined the number of the refresh cycle comprised in current sample period by the refresh cycle of comparing sampling period and device register, specific as follows:
If the sampling period is the integral multiple of refresh cycle, the number of the refresh cycle comprised in current sample period is the business of sampling period divided by refresh cycle gained;
If the sampling period is not the integral multiple of refresh cycle, and the sampling period is less than the refresh cycle, judge whether the variable quantity of the performance parameter in current sample period equals null value, if equal, determine that the number of the refresh cycle comprised in current sample period is zero, otherwise, determine that the number of the refresh cycle comprised in current sample period is 1;
If the sampling period is not the integral multiple of refresh cycle, and the sampling period is greater than the refresh cycle, according to sampling period, refresh cycle, start-up time, current sample time and last sampling instant, determines the number of the refresh cycle comprised in current sample period.
Wherein, when the number of the refresh cycle determining to comprise in current sample period is zero, the rate of change of retention parameter is constant, by the performance parameter variations rate of performance parameter variations rate corresponding to last sampling period as current sample period.
In a specific implementation, at the integral multiple that the sampling period is not the refresh cycle, and the sampling period is when being greater than the refresh cycle, determine being implemented as follows of the number of the refresh cycle comprised in current sample period: adopt formula T/t+y to calculate the number of the refresh cycle comprised in current sample period, T represents the sampling period, t represents the refresh cycle, and y represents corrected parameter, and "/" represents and divides exactly; Wherein, as { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t] > 0 time, y equals 1; As { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t]≤0 time, y equals 0, M
0the start-up time of indication equipment register, M
irepresent current sample time, M
i-1last sampling instant, " % " represents remainder.
In the embodiment of the present invention, according to the statistical value of the statistical value of the performance parameter of current sample time and the performance parameter of a upper sampling instant, determine the variable quantity of the performance parameter in current sample period.Particularly, the statistical value of the performance parameter of current sample time deducts the statistical value of the performance parameter of a sampling instant, can obtain the variable quantity of the performance parameter in current sample period.
Step 502: according to the variable quantity of the number of the refresh cycle comprised in the current sample period determined, the refresh cycle of device register and performance parameter, the rate of change of compute performance parameters.
Particularly, formula Δ x is adopted
i÷ (k × t) calculates the rate of change of performance parameter, wherein, and Δ x
irepresent the variable quantity of performance parameter in current sample period, k represents the number of the refresh cycle comprised in current sample period, and t represents the refresh cycle.
In practical application, in network management system, the mapping program of performance monitoring draws the performance parameter variations rate of current sample period in current sampling instant, repeat the process of the performance parameter variations rate of above-mentioned calculating current sample period, at the end of performance parameter acquisition tasks, the curve of the Changing Pattern of this performance parameter of reflection can be drawn out.
Below by way of a specific embodiment, the process of carrying out performance Parameter analysis provided in the embodiment of the present invention is specifically described, for the port flow that the performance parameter of server monitoring is communication equipment in this specific embodiment.
First, at communication equipment, following MIB node is set:
The MIB node of the refresh cycle of the device register of the traffic statistics of each port of monitoring communications equipment is set;
The MIB node of the traffic statistics of each port of monitoring communications equipment is set, in this specific embodiment, adopts x
irepresent the traffic statistics value that server obtains, adopt Δ x
irepresent the variable quantity of the traffic statistics value of double acquisition;
The MIB node of the sampling instant of monitoring communications device start time and monitoring server is set, in this specific embodiment, adopts M
0represent the start-up time (i.e. the start-up time of device register) of communication equipment, M
irepresent sampling instant server getting present sample.
Secondly, adopt T to represent the sampling period that network management system is arranged in this specific embodiment, adopt a
irepresent the change of port flow unit interval, i.e. the rate of change of port flow.
As shown in Figure 6, to carry out the specific implementation process of port flow analysis as follows for network management system:
Step 601: arrange sampling period T in network management system after, starts the sampling task of communication equipment port flow, the refresh cycle t of fetch equipment register storage port flow, the statistical value x of present port flow
i, M start-up time of device register
0, current sample time M
i;
Step 602: the size comparing the refresh cycle t of sampling period T and device register, if T >=t, performs step 603, otherwise, perform step 606;
Step 603: judge whether sampling period T can be divided exactly by the refresh cycle t of device register, if so, performs step 604, otherwise, perform step 605;
Step 604: according to formula a
i=Δ x
i÷ T calculates the rate of change of port flow, Δ x
irepresent the variable quantity of flow in current sample period, then perform step 607;
Step 605: according to formula a
i=Δ x
i÷ [(T/t+y) × t] calculates the rate of change of port flow, and then turn and perform step 607, wherein, "/" represents and divides exactly, and y represents corrected parameter, as { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t] > 0 time, y equals 1; As { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t]≤0 time, y equals 0, M
0the start-up time of indication equipment register, M
irepresent current sample time, M
i-1last sampling instant, " % " represents remainder;
Step 606: judge Δ x
iwhether equal zero, if equal zero, is calculated the rate of change of rate of change as the port flow of current sample period of the port flow obtained the last sampling period, then perform step 607; If be not equal to zero, adopt formula a
i=Δ x
i÷ t calculates the rate of change of the port flow of current sample period, then performs step 607;
Step 607: the mapping program of the performance monitoring of network management system draws the rate of change of the port flow of current sample period on current sample time, when the next sampling period arrives, repeat above-mentioned steps 601-step 606, and the rate of change of port flow that draw calculation obtains, until acquisition tasks terminates, the curve reflecting the change of communication equipment port flow can be obtained.
Suppose that the port flow of this specific embodiment middle port communication equipment at the uniform velocity increases, as shown in figure 7, the change rate curve of its flow as shown in figure 7b for the change curve of its flow.
Sampling period T being more than or equal to the situation of refresh cycle t, after network management system is analyzed this port flow, if sampling period T is the integral multiple of refresh cycle t, then can reaching curve shown in accompanying drawing 7B without the need to carrying out any correction; If sampling period T is not the integral multiple of refresh cycle t, before not revising, as shown in accompanying drawing 7D, can there is fluctuation to a certain degree in the change rate curve of its flow, the method adopting the specific embodiment of the invention to provide just can reach the effect shown in accompanying drawing 7B after revising.
Sampling period T is less than to the situation of refresh cycle t, before not revising, the change rate curve of its flow, as shown in accompanying drawing 7C, accurately can not reflect the actual change of flow, the method provided through the specific embodiment of the invention is revised, and just can reach the effect shown in accompanying drawing 7B.
Based on same inventive concept, the embodiment of the present invention additionally provides the analytical equipment of performance parameter in a kind of network management system, and the concrete enforcement of this device see the description of said method, can repeat part and repeat no more, as shown in Figure 8, this device mainly comprises with lower unit:
Processing unit 801, for determining the variable quantity of performance parameter in current sample period, and determines the number of refresh cycle of the device register comprised in current sample period, this for register for storing the statistical value of this performance parameter;
Determining unit 802, for the variable quantity according to the number of the refresh cycle comprised in the current sample period determined, the refresh cycle of device register and performance parameter, the rate of change of compute performance parameters.
Wherein, also comprise acquiring unit 803, for obtaining the sampling period of collection of server performance parameter and storing start-up time of device register, the refresh cycle of this performance parameter, and record the statistical value of the performance parameter of each sampling instant and each sampling instant.
Wherein, processing unit 801 specifically for:
If the sampling period is the integral multiple of refresh cycle, the number of the refresh cycle comprised in current sample period is the business of sampling period divided by refresh cycle gained;
If the sampling period is not the integral multiple of refresh cycle, and the sampling period is less than the refresh cycle, judge whether the variable quantity of the performance parameter in current sample period equals null value, if equal, determine that the number of the refresh cycle comprised in current sample period is zero, otherwise, determine that the number of the refresh cycle comprised in current sample period is 1;
If the sampling period is not the integral multiple of refresh cycle, and the sampling period is greater than the refresh cycle, according to sampling period, refresh cycle, start-up time, current sample time and last sampling instant, determines the number of the refresh cycle comprised in current sample period.
In a specific implementation, processing unit 801 specifically for:
If the sampling period is not the integral multiple of refresh cycle, and the sampling period is greater than the refresh cycle, adopts formula T/t+y to calculate the number of the refresh cycle comprised in current sample period, T represents the sampling period, t represents the refresh cycle, and y represents corrected parameter, and "/" represents and divides exactly;
Wherein, as { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t] > 0 time, y equals 1; As { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t]≤0 time, y equals 0, M
0the start-up time of indication equipment register, M
irepresent current sample time, M
i-1last sampling instant, " % " represents remainder.
Wherein, processing unit 801 specifically for:
According to the statistical value of the statistical value of the performance parameter of current sample time and the performance parameter of a upper sampling instant, determine the variable quantity of the performance parameter in current sample period.
Wherein, determining unit 802 specifically for:
Adopt formula Δ x
i÷ (k × t) calculates the rate of change of performance parameter, wherein, and Δ x
irepresent the variable quantity of performance parameter in current sample period, k represents the number of the refresh cycle comprised in current sample period, and t represents the refresh cycle.
Based on technique scheme, in the embodiment of the present invention, by determining the number of the refresh cycle of the device register comprised in current sample period, performance parameter statistics to be analyzed is stored in this device register, after the variable quantity determining performance parameter in current sample period, according to the number of the refresh cycle comprised in the current sample period determined, the refresh cycle of device register and the variable quantity of performance parameter, calculate the rate of change of performance parameter, thus avoid in existing performance parameter analytical method the error directly adopting sampling period compute performance parameters rate of change to bring, effectively reduce the error produced when network management system analyzes the performance parameter of each communication equipment, improve network management system to the accuracy of each communication equipment monitoring performance.
And, the performance parameter analytical method that the embodiment of the present invention provides is wireless takies device resource and bandwidth, and guaranteed performance Parameter analysis result can have higher accuracy, avoid in the result curve adopting existing performance parameter analytical method to cause and occur the problem such as burr, periodic swinging.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. the analytical method of performance parameter in network management system, is characterized in that, comprising:
The start-up time of the sampling period obtaining collection of server performance parameter and the device register storing described performance parameter, refresh cycle, and record the statistical value of the performance parameter of each sampling instant and each sampling instant;
Determine the variable quantity of performance parameter in current sample period, and determine the number of refresh cycle of the device register comprised in current sample period, described device register is for storing the statistical value of described performance parameter;
According to the variable quantity of the number of described refresh cycle comprised in the current sample period determined, the refresh cycle of device register and described performance parameter, calculate the rate of change of described performance parameter.
2. the method for claim 1, is characterized in that, determines the number of the described refresh cycle comprised in current sample period, comprising:
If the described sampling period is the integral multiple of described refresh cycle, the number of the described refresh cycle comprised in current sample period is the business of sampling period divided by described refresh cycle gained;
If the described sampling period is not the integral multiple of described refresh cycle, and the described sampling period is less than the described refresh cycle, judge whether the variable quantity of the performance parameter in described current sample period equals null value, if equal, determine that the number of the described refresh cycle comprised in current sample period is zero, otherwise, determine that the number of the described refresh cycle comprised in current sample period is 1;
If the described sampling period is not the integral multiple of described refresh cycle, and the described sampling period is greater than the described refresh cycle, according to described sampling period, described refresh cycle, described start-up time, current sample time and last sampling instant, determine the number of the refresh cycle comprised in current sample period.
3. method as claimed in claim 2, it is characterized in that, according to described sampling period, described refresh cycle, described start-up time, current sample time and last sampling instant, determine the number of the refresh cycle comprised in current sample period, specifically comprise:
Adopt formula T/t+y to calculate the number of the refresh cycle comprised in current sample period, T represents the sampling period, and t represents the refresh cycle, and y represents corrected parameter, and "/" represents and divides exactly;
Wherein, as { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t] >0 time, y equals 1; As { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t]≤0 time, y equals 0, M
0the start-up time of indication equipment register, M
irepresent current sample time, M
i-1last sampling instant, " % " represents remainder.
4. the method as described in any one of claim 1,2 or 3, is characterized in that, determine the variable quantity of the performance parameter in current sample period, comprising:
According to the statistical value of the statistical value of the performance parameter of current sample time and the performance parameter of a upper sampling instant, determine the variable quantity of the performance parameter in current sample period.
5. method as claimed in claim 4, is characterized in that, calculate the rate of change of described performance parameter, comprising:
Adopt formula Δ x
i÷ (k × t) calculates the rate of change of performance parameter, wherein, and Δ x
irepresent the variable quantity of performance parameter in current sample period, k represents the number of the refresh cycle comprised in current sample period, and t represents the refresh cycle.
6. the analytical equipment of performance parameter in network management system, is characterized in that, comprising:
Acquiring unit, for obtaining the sampling period of collection of server performance parameter and storing start-up time of device register, the refresh cycle of described performance parameter, and records the statistical value of the performance parameter of each sampling instant and each sampling instant;
Processing unit, for determining the variable quantity of performance parameter in current sample period, and determine the number of refresh cycle of the device register comprised in current sample period, described device register is for storing the statistical value of described performance parameter;
Determining unit, for the variable quantity according to the number of described refresh cycle comprised in the current sample period determined, the refresh cycle of device register and described performance parameter, calculates the rate of change of described performance parameter.
7. device as claimed in claim 6, is characterized in that, described processing unit specifically for:
If the described sampling period is the integral multiple of described refresh cycle, the number of the described refresh cycle comprised in current sample period is the business of sampling period divided by described refresh cycle gained;
If the described sampling period is not the integral multiple of described refresh cycle, and the described sampling period is less than the described refresh cycle, judge whether the variable quantity of the performance parameter in described current sample period equals null value, if equal, determine that the number of the described refresh cycle comprised in current sample period is zero, otherwise, determine that the number of the described refresh cycle comprised in current sample period is 1;
If the described sampling period is not the integral multiple of described refresh cycle, and the described sampling period is greater than the described refresh cycle, according to described sampling period, described refresh cycle, described start-up time, current sample time and last sampling instant, determine the number of the refresh cycle comprised in current sample period.
8. device as claimed in claim 7, is characterized in that, described processing unit specifically for:
If the described sampling period is not the integral multiple of described refresh cycle, and the described sampling period is greater than the described refresh cycle, adopts formula T/t+y to calculate the number of the refresh cycle comprised in current sample period, T represents the sampling period, t represents the refresh cycle, and y represents corrected parameter, and "/" represents and divides exactly;
Wherein, as { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t] >0 time, y equals 1; As { [(the M that satisfies condition
i-1-M
0) %t]-[(M
i-M
0) %t]≤0 time, y equals 0, M
0the start-up time of indication equipment register, M
irepresent current sample time, M
i-1last sampling instant, " % " represents remainder.
9. the device as described in any one of claim 6-8, is characterized in that, described processing unit specifically for:
According to the statistical value of the performance parameter of current sample time and the performance parameter statistics of a upper sampling instant, determine the variable quantity of the performance parameter in current sample period.
10. device as claimed in claim 9, is characterized in that, described determining unit specifically for:
Adopt formula Δ x
i÷ (k × t) calculates the rate of change of performance parameter, wherein, and Δ x
irepresent the variable quantity of performance parameter in current sample period, k represents the number of the refresh cycle comprised in current sample period, and t represents the refresh cycle.
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| CN101237352A (en) * | 2008-03-05 | 2008-08-06 | 杭州华三通信技术有限公司 | Traffic data collection method, system and device |
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