JP3302102B2 - Load test 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 load test method in a data transfer system, and more particularly to a load test method in a data transfer system that transfers a plurality of data via a predetermined number of buffers for storing data of a predetermined length.

[0002]

2. Description of the Related Art FIG. 7 shows an example of a conventional data transfer system. The data transfer system shown in FIG. 7 includes a line unit (2) that accommodates a communication line (3) and a line control unit (1) that controls transmission and reception of data to and from the communication line (3).

The line section (2) is provided with a predetermined number of transmission buffers (21) and a predetermined number of reception buffers (22) each capable of storing data of a predetermined length. However, the number of transmission buffers (21) and reception buffers (22) and the length of data that can be stored in each transmission buffer (21) or reception buffer (22) are unknown at the time of the test.

When the line control unit (1) prepares a predetermined number of data of a predetermined length to be transmitted to the communication line (3), the line unit (2) prepares each data prepared in the line control unit (1). After storing the data in the transmission buffer for one data (21), the data is sequentially extracted from each transmission buffer (21), and the communication line (3)
To send to.

When a predetermined number of data of a predetermined length sequentially arrives from the communication line (3), the line section (2) sequentially stores the arriving data in the reception buffer (22), destined for one data, and then stores each reception data in the reception buffer (22). The data is sequentially extracted from the buffer (22) and transferred to the line control unit (1).

In testing the data transmission / reception function of such a data transfer system, conventionally, for example, after a communication line (3) is loop-connected by a loop connection section (4),
By inputting a plurality of test data having a predetermined data length to the line control unit (1), the data is transmitted to the communication line (3) via the transmission buffer (21) in the line unit (2),
The test data that returns to the line unit (2) via the return connection unit (4) is returned to the line control unit (1) via the reception buffer (22).

[0007]

As apparent from the above description, in the conventional load test method, a fixed number of data and a fixed number of test loads are prepared in the line control unit (1), and a data transfer system is prepared. Was sent and received.

However, since the data length that can be stored in the transmission buffer (21) and the reception buffer (22) and the number of installations are unknown, each data length and the number of data of the test load are determined by the line unit (2). The transmission buffer (2
1) and a test load capable of sufficiently testing the capabilities of the transmission buffer (21) and the reception buffer (22) because the data length is set irrespective of the data length that can be stored in the reception buffer (22) and the number of installations. Was not always input, and it could not be said that an efficient load test was performed using the optimum test load.

Further, since the data length and the number of data are fixed, a variable load test cannot be executed. An object of the present invention is to enable an efficient load test suitable for a data transmission / reception function of a data transfer system and to execute a load test with various changes.

[0010]

FIG. 1 is a diagram showing the principle of the present invention. FIG. 1 (a) shows the principle of the present invention [Claim 1], and FIG. Item 2] will be described.

The data transfer system to which the present invention is applied transfers a plurality of data via a predetermined number of buffers each storing data of a predetermined length.

[0012]

In the case where test data having a data length that can be stored in each buffer provided in the data transfer system and a data length and the number of data that match the number of installed buffers are transmitted and received by the data transfer system, the data transfer system operates as follows. In order to execute the transmission / reception processing most efficiently, it is assumed that the processing time per unit data amount is minimized.

In the present invention [claim 1], an optimum test load is determined by utilizing this principle. That is, in the load test method according to the present invention [claim 1],
First, the data transfer system generates various data in which the data length and the number of data are changed within a predetermined range as test data [Step S101 in FIG. 1].

Next, the data transfer system measures the processing time when each test data is transmitted and received [Step S1]
02]. Next, the data transfer system calculates a processing time per unit data of each test data from the measurement result [Step S103].

Next, the data transfer system determines the load data having the shortest processing time per unit data as the test load of the data transfer system [Step S].
104].

As a result, the data transfer system executes a load test using the determined load. Further, when the test is executed by sequentially increasing the number of test data, and when the number of data matches the number of buffers provided in the data transfer system, the data transfer system executes transmission / reception processing most efficiently. Therefore, it is assumed that the processing data amount per unit time is maximized.

In the present invention [Claim 2], the test is executed under a variety of loads by utilizing this principle, and the test is executed by applying a sufficient load to the data transfer system.

That is, in the load test method according to the second aspect of the present invention, first, the data transfer system generates, as test data, data of a predetermined length in which the number of data increases by one each time the test is performed [Step S201]. .

Next, the data transfer system measures the processing time when transmitting and receiving test data of each data number (step S202). Next, the data transfer system calculates a processing data amount per unit time from the measurement result [Step S203].

Next, the data transfer system compares the amount of processed data per unit time with the amount of processed data per unit time calculated in the previous test, and the amount of processed data per unit time increases as the number of data increases. During the test, the test is continued while increasing the number of data. When the amount of data processed per unit time does not increase even if the number of data is increased, the test is continued by fixing the number of data [step S204].

Therefore, even if the data length that can be stored in the buffer provided in the data transfer system and the number of installed buffers are unknown, the test can be executed with a load that matches the buffer, and the load can be varied. The test can be executed and the test can be executed by applying a sufficient load to the data transfer system, and the load test covering the data transmission / reception function of the data transfer system can be efficiently executed.

[0022]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a data transfer system according to one embodiment of the present invention [Claim 1], and FIG. 3 is a diagram showing a load test method according to an embodiment of the present invention [Claim 1]. FIG. 5 is a diagram showing an example of a processing capability determination process in FIG. 3, FIG. 5 is a diagram showing a data transfer system according to an embodiment of the present invention [claim 2], and FIG. FIG. 4 is a diagram showing a load test method according to one embodiment. The same reference numerals indicate the same objects throughout the drawings.

First, an embodiment of the present invention [Claim 1] will be described.
This will be described with reference to FIGS. The data transfer system shown in FIG. 2 also has a line control unit (1) and a line having a predetermined number of transmission buffers (21) and reception buffers (22), similarly to a conventional data transfer system (see FIG. 7). The line control unit (1) includes a transmission data storage unit (11) and a reception data storage unit (1).
2), transmission control word storage unit (13), reception control word storage unit (14), measurement time storage unit (15), individual optimum measurement time storage unit (16), total optimum measurement time storage unit (17), and timekeeping A part (18) is provided.

In FIG. 2 as well, it is assumed that the communication line (3) is loop-back connected by the loop-back connection section (4). First, the line control unit (1) initializes the data length (m) to 1 byte and the number of data (n) to 1 data (step S1 in FIG. 3), and thereby the transmission data storage unit (11).
, One transmission data (D _S11 ) [where m (= 1) of the transmission data (D _Smn ) indicates the data length, n (= 1) indicates the number of data, and so on].

Next, the line control unit (1) includes a transmission control word (C _S11 ) for instructing the line unit (2) to transmit and receive the transmission data (D _S11 ) stored in the transmission data storage unit (11). The reception control word (C _R11 ) is created for each word [Step S2], and stored in the transmission control word storage unit (13) and the reception control word storage unit (14), respectively.

Next, the line controller (1) causes the line unit (2) to start data transmission / reception (step S3).
The timer (18) starts measuring the transmission / reception processing time of the transmission data (D _S11 ) [step S4].

The line section (2) comprises a transmission control word storage section (13) and a reception control word storage section (14) of the line control section (1).
The transmission control word (C _S11 ) and the reception control word (C
_R11 ), the transmission data (D _S11 ) stored in the transmission data storage section (11) is extracted and the transmission buffer (2) is extracted.
When the transmission data (D _S11 ) is transmitted to the communication line (3) after being temporarily stored in one of the items (1), the transmission data (D _S11 ) is transmitted to the line unit (2) via the loopback connection unit (4), and the reception data (D _R11 ) is transmitted. ).

The line section (2) temporarily stores the returned reception data (D _R11 ) in one of the reception buffers (22) and then stores it in the reception data storage section (12) of the line control section (1). I do.

The line control unit (1), the transmission data stored in the transmission data storage unit (11) (D _{S1 1)} is transmitted and received by the line unit (2), to accumulate complete received data storage unit (12) [Step S5], and when the accumulation in the reception data accumulation unit (12) is completed, the clock unit (1)
At 8), the measurement of the transmission / reception processing time of the transmission data (D _S11 ) is stopped [Step S6].

As described above, the timer (18) determines the time (T [1.1]) required for transmission and reception of the transmission data (D _S11 ) stored in the transmission data storage (11) [the processing time (T
[1.1]) is measured.

Next, the line control unit (1) compares the measured processing time (T [1.1]) with the data length (m) [= 1 byte] of the transmission data (D _S11 ) and the number of data (n). By dividing by the product [= (m) × (n) = 1 × 1] with [= 1 data], the processing time per byte (t [1.1]) [the unit processing time (t [1 .1])], the processing time (T [1.1]) and the unit processing time (t
[1.1]) is stored in the area corresponding to the data length (m) [= 1 byte] and the number of data (n) [= 1 data] in the measurement time accumulation unit (15) [Step S7].

Next, the line control unit (1) extracts the reception data (D _R11 ) from the reception data storage unit (12) and collates the reception data (D _S11 ) with the transmission data (D _S11 ).
_R11 ) is inspected for normality (step S8), and the normality of the received data ( _DR11 ) is confirmed.

In step S9 to step S12, the line control unit (1) increases the data length (m) by one byte and increases the data number (n) by one data while executing steps S9 to S12. ( _M ) is a preset maximum value [for example, (1000) _H bytes = (4096) _D bytes (however, H
Until the number of data (n) reaches a preset maximum value (for example, (255) _D data). Test is repeated.

[0034] Note that if the line control unit was tested the normality of the received data (D _R11) is (1) detects an abnormality in the received data (D _R11) is the line control unit (1) is the received data (D _{R1 1} ) is output to the effect that an abnormality has been detected [Step S1
5] Stop the test.

In the course of repeating steps S2 to S12, if the line control unit (1) detects an abnormality in the received data (D _Rmn ) in step S8, the test is immediately stopped, and an abnormality occurs and the test is performed. Is output [Step S15].

As described above, the measurement time accumulation unit (15)
Each data length (m) [= (1) _{H to} (1000) _H bytes] and each data number (n) [= (1) _{D to} (25)
5) to all of the region corresponding to the _D data], respectively processing time (T [m · n]) and the unit processing time (t [m ·
n]) is stored.

Next, the line control unit (1) executes the unit processing time (t) stored in each area of the measurement time accumulation unit (15).
[M · n]), in the process shown in FIG. 4, the processing for determining the processing capacity of the data transfer system is executed [Step S13], and the determination result is output [Step S1]
4].

The line control unit (1) executes step S21 in FIG.
Through S26, the measurement time accumulation unit (1
The unit processing times (t [m · n]) stored in 5) are compared in magnitude for each data length (m), and the minimum unit processing time (t [m · n]) is determined as an individual optimum measurement time. (T _m ) and store them in the areas corresponding to the respective data lengths (m) of the individual optimum measurement time accumulation unit (16).

Next, the line control unit (1) executes step S in FIG.
By performing the 27 to S32, and compares the magnitude of the storage portion separately optimum measurement time (16) to store each individual optimal measurement time of completion (t _m), overall optimal minimum measurement of individual optimal measurement time (t _m) It is selected as the time (t ₀ ) and stored in the total optimum measurement time accumulation unit (17).

The line control unit (1) stores the data length (m) and the number of data (n) corresponding to the total optimum measurement time (t ₀ ) stored in the total optimum measurement time accumulation unit (17) into the line unit ( determine that most effectively transmit data using the transmission buffer (21) and receive buffers (22) which comprises for a 2) (D _Smn), a load test of a data transfer system using the determined transmission data (D _Smn) Execute.

As is clear from the above description, the present invention [contract
According to the embodiment of item 1), the line control unit (1)
Transmission data whose length (m) and number of data (n) are sequentially changed
(D_Smn) Is set in the transmission data storage unit (11) and transmitted.
Executes reception, measures the processing time (T [mn]), and simply
Position processing time (t [m · n]) is calculated.
The magnitude comparison of the order processing time (t [m · n]) is sequentially performed.
Thus, the unit processing time (t
[M · n]) to the total optimal measurement time (t₀Elected as)
And has a corresponding data length (m) and number of data (n).
Transmission data (D _Smn) Is determined as the optimal load,
Line section to execute the load test of the data transfer system.
The transmission buffer (21) and the reception buffer provided in (2).
The number of bytes that can be stored and the number of files
At least, the transmission buffer (2
1) and the number of bytes that can be stored in the reception buffer (22)
And that the test load appropriate for the number of installations is determined.
The transmission buffer (21) and the transmission buffer (21) of the line section (2).
And load that fully covers the functions of the receive buffer (22)
Testing can be performed efficiently.

Next, an embodiment of the present invention (claim 2) will be described with reference to FIGS. As in the data transfer system shown in FIG. 2, the data transfer system shown in FIG. 5 also includes a line control unit (1) and a line unit () having a predetermined number of transmission buffers (21) and reception buffers (22). 2), the line control unit (1) includes a transmission data storage unit (11), a reception data storage unit (12),
Transmission control word storage unit (13), reception control word storage unit (1)
4) a timing section (18), a load amount accumulating section (19), and a test number accumulating section (110) are provided.

It is assumed that 0 is stored as an initial value in the load amount accumulating section (19). Also in FIG. 5, it is assumed that the communication line (3) is looped back and connected by the looping connection unit (4).

First, the line control unit (1) initializes the number of data (n) to 1 data and the number of tests (N) to 1 (step S41 in FIG. 6), thereby obtaining the transmission data storage unit (11). Transmission data (D _S1 ) having a predetermined data length
Is accumulated.

Next, the line control unit (1) transmits a transmission control word (C _S1 ) and a reception control word (C _R1 ) for transmitting and receiving the transmission data (D _S1 ) stored in the transmission data storage unit (11). Each word is prepared for one word [step S42], and the transmission control word storage unit (13) and the reception control word storage unit (14) are respectively formed.
To accumulate.

Next, the line control unit (1) causes the line unit (2) to start data transmission / reception (step S4).
3] The timer (18) starts measuring the transmission / reception processing time of the transmission data (D _S1 ) [step S44].

The line section (2) comprises a transmission control word storage section (13) and a reception control word storage section (14) of the line control section (1).
The transmission data (D _S1 ) stored in the transmission data storage section (11) is extracted while referring to the transmission control word (C _S1 ) and the reception control word (C _R1 ) already stored in the transmission buffer (2).
When the transmission data (D _S1 ) is transmitted to the communication line (3) after being temporarily stored in one of the items ( ₁ ), the transmission data (D _S1 ) is transmitted to the line portion (2) via the loopback connection portion (4), and the reception data (D _R1 ) is transmitted. ).

The line unit (2) temporarily stores the returned reception data (D _R1 ) in one of the reception buffers (22), and then stores it in the reception data storage unit (12) of the line control unit (1). I do.

The line control unit (1) transmits the transmission data (D _S1 ) stored in the transmission data storage unit (11) to the line unit (2).
And waits for the completion of accumulation in the reception data accumulation unit (12) [Step S45]. When the accumulation in the reception data accumulation unit (12) is completed, the transmission data (D _S1 ) is transmitted to the timer unit (18). The measurement of the transmission / reception processing time is stopped [step S46].

As described above, the timer unit (18) measures the time (T ₁ ) (hereinafter referred to as the processing time (T ₁ )) required for transmission and reception of the transmission data (D _S1 ) stored in the transmission data storage unit (11). I do.

Next, the line control unit (1) determines the number of data (n)
[= 1] processing time (T₁By dividing by
The number of data transferred per unit time (d₁) [Load
Quantity (d ₁) Is calculated [step S47].

Next, the line control unit (1) extracts the reception data (D _R1 ) from the reception data storage unit (12) and compares it with the transmission data (D _S1 ), thereby obtaining the reception data (D _R1 ).
Of the received data (D)
_R1 ) is confirmed to be normal.

Next, the line control unit (1) calculates the load amount (d _n ) (= 0 as the initial value) stored in the load amount storage unit (19) and the load amount (d
₁₎ is compared with [Step S49], the load weight (d ₁₎ to confirm that greater than the load amount of already stored (d _n),
The number of data (n) is updated by adding 1 to the number of data (n) = 2 [Step S50], and the number of tests (N) [= 1]
After adding 1 to the number of tests (N) = 2 (step S51), steps S42 to S51 are repeated until the number of tests (N) reaches a preset value (N ₀ ) [step S52]. ].

When the number of tests (N) = 2, since the load amount (d ₁ ) calculated in the previous test is already stored in the load amount accumulating unit (19), the line control unit (1) proceeds to step S49. , The load amount (d ₂ ) calculated this time and the previously calculated load amount (d ₁ ) already stored in the load amount accumulation unit (19).
And the larger one is stored in the load amount accumulation unit (19).

Similarly, the line control unit (1) determines whether the load (d _n ) calculated in the current test is greater than the load (d _n-1 ) calculated in the previous test. Executes the next test by increasing the number of data (n) to 1, but when the load amount (d _n ) calculated this time does not increase from the load amount (d _n-1 ) calculated last time, the data number (N)
And then repeatedly execute until the number of tests (N) reaches a predetermined value (N ₀ ) with the number of data (n) when the load amount (d _n ) is at a maximum. Become.

When the number of tests (N) reaches a predetermined value (N ₀ ) [Step S52], the line control unit (1) outputs that the (N ₀ ) tests have been completed normally and outputs a message [Step S53]. ], And outputs the load amount (d _n ) stored in the load amount accumulating section (19) [Step S54].

In the course of repeating steps S42 to S52, if the line control unit (1) detects an abnormality in the received data (D _Rm ) in step S48, the test is immediately stopped, and an abnormality occurs and the test is performed. outputs that was discontinued [step S55], and outputs the load of already stored (d _n) until it the load storage unit (19) [step S54].

As is apparent from the above description, according to the embodiment of the present invention [Claim 2], the line control unit (1) sequentially increases the data number (n) of the transmission data (D _Sn ) for transmission and reception. While executing the test, the processing time (T _n ) was measured to calculate the load (d _n ) [= n / T _n ), and the load (d _n ) was calculated as the load (d _n ) calculated in the previous test. d _n−1 ), while the load amount (d _n ) is increasing, the number of data (n) is increased by one, but the load amount (d _n ) is changed to the previously calculated load amount (d _n ). _n-1 ), the number of data (n) is fixed, and the test is continued. Therefore, a load test in which the number of data (n) is variable becomes possible and the load (d _n ) is set to a large value. , An efficient load test can be executed.

FIGS. 2 to 6 are merely examples of the present invention. For example, the data transfer system to which the present invention is applied is not limited to the illustrated one, and a number of other data transfer systems can be used. Deformation is considered, but the effect of the present invention does not change in any case.

[0060]

As described above, according to the present invention, the data length that can be stored in the buffer provided in the data transfer system,
Even if the number of buffers is unknown, tests can be executed with loads that match the buffers, tests can be executed with loads that vary, and tests can be executed with a sufficient load on the data transfer system. Thus, a load test covering the data transmission / reception function of the data transfer system can be efficiently executed.

[Brief description of the drawings]

FIG. 1 is a diagram showing the principle of the present invention. FIG. 1 (a) shows the principle of the present invention [claim 1], and FIG. 1 (b) shows the principle of the present invention [claim 2].

FIG. 2 is a diagram showing a data transfer system according to an embodiment of the present invention [Claim 1];

FIG. 3 is a diagram showing a load test method according to an embodiment of the present invention [Claim 1].

FIG. 4 is a diagram illustrating an example of a processing capability determination process in FIG. 3;

FIG. 5 is a diagram showing a data transfer system according to an embodiment of the present invention [Claim 2];

FIG. 6 is a diagram showing a load test method according to an embodiment of the present invention [Claim 2].

FIG. 7 is a diagram showing an example of a conventional data transfer system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 line control unit 2 line unit 3 communication line 4 loopback connection unit 11 transmission data storage unit 12 reception data storage unit 13 transmission control word storage unit 14 reception control word storage unit 15 measurement time storage unit 16 individual optimum measurement time storage unit 17 overall Optimal measurement time accumulation unit 18 Clocking unit 19 Load amount accumulation unit 21 Transmission buffer 22 Reception buffer 110 Test number accumulation unit

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-112973 (JP, A) JP-A-63-99654 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04L 12/56 400 H04L 13/08 H04L 29/14

Claims (2)

(57) [Claims] In a data transfer system for transferring a plurality of data via a predetermined number of buffers each storing data of a predetermined length, various data whose data length and number of data are changed within a predetermined range are used as test data. Generate [Step S10
1], a processing time when each of the test data is transmitted and received is measured [Step S102], and a processing time per unit data of each test data is calculated from the measurement result [Step S103]. A load test that determines the load data having the shortest time as a test load of the data transfer system (step S104), and executes a load test of the data transfer system using the determined test load; Method. 2. A data transfer system for transferring a plurality of data via a predetermined number of buffers each storing data of a predetermined length, wherein data of a predetermined length in which the number of data is increased by one for each test is used as test data. Generate [Step S201], measure the processing time when transmitting and receiving the test data of each data number [Step S202], calculate the processing data amount per unit time from the measurement result [Step S203], Compare the amount of processed data per unit time with the amount of processed data per unit time calculated in the previous test, and increase the number of data while the amount of processed data per unit time increases with the increase in the number of data. The test is continued while the processing data amount per unit time stops increasing even if the data number is increased. Was immobilized to continue the test [Step S204] loading test wherein the.