JPH05298198A - Measuring system of intersystem data transfer processing period of time - Google Patents

Abstract

PURPOSE:To accurately measure intersystem data transfer processing period of time without lowering the system performance in an on-line network system. CONSTITUTION:A communication path for measuring purpose between a transmission system 10 and a destination system 30 is established (A to D). The reciprocating transfer of measured data is performed between the transmission system 10 and the destination system 30 via this communication path and each system 10, 20, 30 adds the time values obtained from the counter hardware mechanisms 13, 23, 33 within the self-system to the measured data in each of the back and forth routes (E to N). The measured data returned to the transmission system 10 is stored in a file 14. By the time values of the back and forth routes within this measured data, the intersystem data transfer processing time is calculated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an online network.
The present invention relates to a network system, and more particularly to a method of measuring data transfer time between constituent systems of an online network system.

[0002]

2. Description of the Related Art As a method for evaluating the performance of an online system, it is general to measure the response time during system operation. A large-scale online network system consisting of a plurality of communication networks such as a store-and-forward wide area network represented by a packet switching network and a local area network, and a plurality of systems sharing these networks. In this case, it is necessary to measure the data transfer time between the systems, which is a component of the response time, and evaluate its validity.

Conventionally, to measure the inter-system data transfer time of such an online network system,
Traces the history of online business processing results during online business, collects the trace data of each system acquired in one place, and from that, collects trace data of specific business for a specific system. The data transfer time between the corresponding systems was obtained from the extracted trace data by extracting it manually or by using a dedicated program. In addition, this kind of technology
For example, it is disclosed in JP-A-63-84235.

[0004]

However, since the history of online business processing results must be traced in each system through which data passes during online business, there is a high risk of degrading system performance. Further, there is a problem that the operability is poor, such as the fact that the trace data obtained by each system must be collected and calculated in one place. In addition, since the time value precision of the timekeeping hardware mechanism is different when the system is different, there is a problem that the data transfer processing time between arbitrary systems cannot be accurately obtained due to the influence.

Therefore, it is an object of the present invention to provide a novel method for accurately measuring inter-system data transfer processing time in an online network system without impairing system performance during online business.

[0006]

In order to achieve the above object, the present invention provides an online network system in which two or more data transfer processing times are desired to be measured separately from a communication path used for online business communication. A measurement communication path is set between the systems, and the measurement data is transferred back and forth through this measurement communication path. At the time of forward transfer, each system writes the time in the measurement data. Similarly, in the backward transfer, the time is written in the measurement data in each system. Then, by analyzing the measurement data returned to the system that first transmitted the measurement data,
Specifically, the inter-system data transfer processing time is obtained by calculating the difference between the forward and backward times of the same system written in the measurement data.

[0007]

According to such a method, it suffices to set the measurement communication path between the systems to be measured and transfer the minimum necessary measurement data through this measurement communication path. The system load does not increase so much, and the inter-system data transfer processing time can be measured without degrading the system performance.

Also, since the measurement data relating to each system is collected in the transmission source system of the measurement data, the operability is good.

Further, the forward and backward times of each system written in the collected measurement data are time values of the same accuracy by the same timing hardware mechanism. Therefore, by taking the difference between them, the timing hardware mechanism's An accurate data transfer processing time can be obtained by eliminating the influence of the difference in precision of time values.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory diagram of a configuration example of an online network system and a measurement procedure. FIG. 2 is an explanatory diagram of the format of the measurement data, and FIG. 3 is a flowchart of the process of writing the passage time in the measurement data.

In FIG. 1, reference numerals 10, 20, 30 denote systems constituting an online network system, which are connected to each other via communication networks 40, 50. Here, it is assumed that the measurement data is forwarded from the system 10 to the system 30 when the inter-system data transfer processing time is measured. Therefore, the system 10 is a transmission system, the system 30 is a destination system, and the system 20 is a relay. Called the system.

In each of the systems 10, 20, and 30, the network management programs 11, 21 for executing the process of establishing and releasing the measuring communication path, the process of writing the data passing time, and the process of analyzing the measured data. 31 and a communication management program 1 that actually transmits and receives measurement data
2, 22 and 32 operate.

When measuring the inter-system data transfer processing time, first, the network management program 11 of the transmission system 10 establishes a measurement communication path to the network management program 21 of the relay system 20. Request (A in FIG. 1). Next, the network management program 21 of the relay system 20 requests the network management program 31 of the destination system 30 to establish a measurement communication path (B in FIG. 1). Upon receiving this request, the network management program 31 responds that it accepts the establishment of the communication path (C in FIG. 1). Then, the network management program 21 returns an acceptance response to the network management program 11 of the transmission system 10 (D in FIG. 1). As a result, the network management program 11 confirms that the measurement communication path has been set up with the network management program 31 of the destination system 30, and thus proceeds to the measurement data transfer process.

Here, the measurement data has a format as shown in FIG. 101 and 102 are areas of identification information (name, address) of the transmission system 10 and the destination system 30, which are written by the transmission system 10. This information is necessary for the system receiving the measurement data to determine whether or not to relay the measurement data to another system to which it is connected. 103 is an area in which the empty area length of the measurement data is written, 104 is an area in which the writing position of the next passage time is written, and after this area 104, the passage time of the measurement data is sequentially written by each system. The contents of the areas 103 and 104 are updated each time the passage time is written in each system.

The description of the measurement procedure will be continued. Transmission system 1
The network management program 11 of 0 has the forward path time value (T obtained from the timekeeping hardware mechanism 13 of its own system).
₁₁ →) is written in the measurement data (E in FIG. 1), and this measurement data is transmitted to the network management program 21 of the relay system 20 using the measurement communication path (FIG. 1).
F). The network management program 21, which has received the measurement data, additionally writes the forward time value (T ₂₁ →) obtained from the clock hardware mechanism 23 of its own system to the measurement data (see FIG. 1). G), the measurement data is sent to the destination system 30
To the network management program 31 (H in FIG. 1).

[0016] networks - click management program 31 measurement de - When the data arrives, the timing of the local system ha - forward of time value from adware mechanism 33 (T ₃₁ →) and the return of the time value (T ₃₁
←) is obtained and written in the measurement data (I, J in FIG. 1), and this time the measurement data is transmitted in the reverse direction to the network management program 21 of the relay system 20 (K in FIG. 1). The network management program 21 also writes the time value (T ₂₁ ←) of the return path in the same way as the forward path, and outputs the measured data to the network.
To the management program 11 (L, M in FIG. 1). The network management program 11 returns the time value (T
₂₁ ←) is written in the measurement data (N in FIG. 1), and the measurement data
The data is recorded in the measurement data file 14 (O in FIG. 1).

When the collection of the necessary measurement data is completed as described above, the measurement communication path is released in the same procedure as when the communication path was established (P, Q, R, S in FIG. 1).

Details of the passage time writing process in each system are as shown in FIG. The measurement data is received (step 201), and the measurement data area 103 is received.
Is checked to see if there is a free area for writing the time (step 202). When it is determined that there is a free area, the current time value is obtained (step 203), the writing position of the time value is obtained by referring to the measurement data area 104 (step 204), and the time value is written (step 205). Then, the contents of the areas 103 and 104 of the measurement data are updated (step 206).

The network management program 11 of the transmission system 10 reads the measurement data from the measurement data file 14 and obtains the data transfer time between the systems by the following calculation (see FIG. 1). T).

The measurement data obtained in the measurement data file 14 includes time values on the outward path (T ₁₁ →, T ₂₁ →, T ₃₁ →) and time values on the return path (T ₁₁ ←, T ₂₁ ←, T ₃₁ ←) is written respectively. Therefore, when viewed from the network management program 11 of the transmission system 10, the adjacent communication networks 4
0, relay system 20, communication network 50, and destination system 3
The round-trip data transfer processing time (T ₁₁ to ₃₁ ) up to 0 can be obtained by the calculation of T ₁₁ to ₃₁ = (T ₁₁ ←)-(T ₁₁ →).

The round-trip data transfer processing time (T ₁₁ to ₂₁ ) between the network management program 11 and the network management program 11 is T ₁₁ to ₂₁ = {(T ₁₁ ←)-(T ₁₁ →) }-{(T ₂₁ ←)
It can be obtained by calculating − (T ₂₁ →)}.

The round trip data transfer processing time (T ₂₁ to ₃₁ ) between the network management program 21 and the network management program 31 is also T ₂₁ to ₃₁ = {(T ₂₁ ←)-(T ₂₁ →) }-{(T ₃₁ ←)
It can be obtained by calculating − (T ₃₁ →)}.

In any calculation, the difference between the time values of the forward path and the backward path obtained from the same timing hardware mechanism (13, 23, 33) is taken. Therefore, even if there is a difference in the time accuracy of the clocking hardware mechanism for each system, it is not affected and accurate measurement is possible.

[0024]

As described above, according to the present invention,
When measuring the inter-system data transfer processing time, it is sufficient to add the system load required for the transfer of the measurement data to the online network system in operation, so it is possible to perform the measurement without degrading the system performance. it can.
In addition, the measurement data is automatically collected in the system that started the measurement (transmission system), so the operability is also good. Furthermore, since the passing times of the forward and return paths of the measurement data are collected, as described in the embodiment,
It is possible to accurately measure the inter-system data transfer processing time by eliminating the influence of the measurement accuracy difference of the clocking hardware mechanism for each system.

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration example and a measurement procedure.

FIG. 2 is a diagram showing a format of measurement data.

FIG. 3 is a flowchart of a time writing process.

[Explanation of Codes] 10 Transmission System 11 Network Management Program in Transmission System 12 Communication Management Program in Transmission System 13 Timing Hardware Mechanism in Transmission System 14 Measurement Data File 20 Relay System 21 Network in Relay System Management program 22 communication management program in relay system 23 clocking hardware mechanism in relay system 30 destination system 31 network management program in destination system 32 communication management program in destination system 33 clocking hardware mechanism in destination system 40 a communication network connecting the transmission system and the relay system 50 a communication network connecting the relay system and the destination system

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuaki Hattori 5030 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi Ltd. Software Development Division

Claims (1)

[Claims] 1. In an online network system comprising a plurality of systems, a measurement communication is provided between a certain first system and a certain second system, separately from a communication path for online business communication. A path is set, the measurement data is transferred back and forth through the measurement communication path, and the time is written in the measurement data in each system on the measurement communication path in each of the forward path and the return path of the transfer, and the first An inter-system data transfer time measuring method, wherein the inter-system data transfer processing time is obtained by analyzing the measurement data returned to the system.