JP2007179404A - Computer and file transfer method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a file transfer system, capable attaining an optimum file transfer quantity control suited to the situation in file transfer using a network by balancing the file transfer and a load by operation of a computer. <P>SOLUTION: A file transfer function 2 of the computer 1 has a computer load detecting function 3 and a file transfer quantity control function 6, detects the load of the computer 1 by the function 3 in transferring a file in a data file 4 of the computer 1 to the network 5, determines a load by operation of the computer 1 from it, and reduces, when the determined load exceeds a threshold, the file transfer quantity according to the load by operation of the computer 1. In this case, a lowest transfer quantity of transfer file is provided so that the file transfer quantity will never become equal or lower than that. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

 The present invention relates to a computer having a file transfer function and a file transfer method for transferring a file between computers.

The conventional general file transfer function operates as follows.
First, the transfer initialization unit is called, and each initialization for file transfer is executed. Subsequently, data is extracted in a specific block unit from the data file by the block cutout means. The extracted data is output to the network in block units by the network output means. After the output to the network, the remaining data is judged by the remaining data confirmation means, and if there is still data to be transmitted, the process returns to the block extraction means and the same network output is repeated.
According to this, as long as there is room in the network to output, the output process is repeated. However, recently, the performance of networks has improved rapidly, and an exponential increase in transfer speed has been realized. As the transfer rate has increased, the amount of data that can be transferred has greatly increased. On the other hand, the network transfer processing as described above has increased by 10 times and 100 times, and as a result, the computer This leads to an increase in load.

  As a countermeasure, there is a case where a waiting time is added between outputs in units of blocks to prevent continuous network transmission processing and reduce the load on the computer. However, when this waiting time is provided, the bandwidth of the network is reduced, so that a reduction in transfer processing is inevitable.

In the file transfer method of Patent Document 1, the synchronous data transmission time is determined based on the maximum use bandwidth and the maximum transmission completion request time by the application from the communication application, and the synchronous data that must be transmitted within the maximum transmission completion request time, It describes what is transmitted while managing the bandwidth for each node.
Further, in Patent Document 2, the usage status of a node is measured, the amount of communication is regulated in the data transmission / reception control unit, and the data transmission / reception control unit receiving the control controls the start and stop of data transfer. .

JP-A-8-88642 (pages 8-14, FIG. 1) Japanese Unexamined Patent Publication No. 2000-194615 (pages 4-5, FIG. 1)

However, the file transfer method of Patent Document 1 has a problem that the load for processing data of each node is not taken into consideration, although the network bandwidth is distributed and managed by each node and dynamically changed. .
In Patent Document 2, although the usage status of a node is taken into consideration, the start and stop of data transfer are controlled according to the usage status of the node, and only processing other than data transfer is prioritized. Absent.

 The present invention has been made to solve the above-described problems, and provides a computer and a file transfer method for realizing optimal file transfer amount control according to the situation in file transfer using a network. It is an object.

 In the computer according to the present invention, in the computer having the file transfer means for transferring the file in the computer to the network, the file transfer means includes a computer load detection means for detecting the load amount of the computer, and the computer load detection means. It comprises file transfer amount control means for controlling the file transfer amount by controlling the processing speed of the file transfer in accordance with the detected load amount of the computer.

  As described above, according to the present invention, in the computer having the file transfer means for transferring the file in the computer to the network, the file transfer means includes the computer load detection means for detecting the load amount of the computer, and the computer load detection. File transfer amount control means for controlling the file transfer amount by controlling the file transfer processing speed according to the load amount of the computer detected by the means, so when the load on the computer is high, the file transfer bandwidth If the computer is narrowed down and the load on the computer is low, the amount of file transfer can be increased.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a file transfer function according to Embodiment 1 of the present invention.
In FIG. 1, the computer 1 has a built-in file transfer function 2 and transfers data stored in the data file 4 in the computer 1 to the network 5. The file transfer function 2 includes a computer load detection function 3 (computer load detection means) for detecting the load on the computer, and file transfer according to the load on the computer detected by the computer load detection function 3. A file transfer amount control function 6 (file transfer amount control means) is provided for controlling the file transfer amount by controlling the processing speed.

FIG. 2 is a flowchart showing the operation of the file transfer function according to the first embodiment of the present invention.
FIG. 3 is a diagram showing the relationship between the computer load and the file transfer amount in the file transfer function according to the first embodiment of the present invention.
In FIG. 3, a threshold is provided for the amount of load calculated by the computer, and when this threshold is exceeded, the file transfer processing speed is reduced accordingly, thereby reducing the file transfer amount. At this time, a minimum transfer amount is provided for the file transfer amount.
In FIG. 3, the computer load amount graph is based on 100% of the computer load amount on the left side (including the file transfer load and other calculation loads), and is relative to 100%. The file transfer amount graph is This is based on the right file transfer bandwidth, and the dotted line indicates the maximum transfer amount.

Next, the operation will be described.
In the first embodiment, the file transfer function 2 includes a computer load detection function 3 for detecting the load amount of the computer, and a file transfer processing speed according to the load amount on the computer detected by the computer load detection function 3. And a file transfer amount control function 6 for controlling the file transfer amount by controlling. The file transfer amount control function 6 is used when the load amount calculated by the computer obtained by excluding the file transfer load amount from the computer load amount detected by the computer load detection function 3 exceeds a specific threshold. Reduce the processing speed of the file transfer and reduce the load on the computer.

  In FIG. 2, first, the transfer initialization means is called, and each initialization for file transfer is executed (step S11). Next, data is extracted from the data file 4 in a specific block unit by the block cutout means (step S12). The extracted data is output to the network in block units by the network output means (step S13). After output to the network, the remaining data is determined by the data remaining confirmation means (step S14). If there is no data to be transmitted, the process is terminated (step S15), and there is still data to be transmitted. Returns to the processing of the block cutout unit in step S12 through steps S16 to S18 described later, and repeats the same network output.

During the output in units of blocks, the computer load detection function 3 is called to acquire the load amount of the computer (step S16). The file transfer amount control function 6 calculates the load amount of other arithmetic processing excluding the file transfer from the obtained load amount of the computer, and compares it with a threshold value (step S17). When the load amount of other arithmetic processing exceeds the value set as the threshold value, a predetermined waiting time is waited (step S18), the data transfer processing is reduced according to the excess amount, and file transfer is performed. The influence on the entire system is reduced (see FIG. 3).
By adding the waiting time in step S18, the load on the computer is reduced. However, when this waiting time is provided, the bandwidth of the network is reduced, so that a reduction in transfer processing is inevitable. Since the file transfer cannot be stopped, a minimum transfer amount is set as shown in FIG. 3, and a waiting time is set so as not to fall below that.

  According to Embodiment 1, by providing a balance between the computational load of the computer and the file transfer amount, when the computational load of the computer is high, the file transfer bandwidth is narrowed down to provide stable arithmetic processing In addition, when the calculation load of the computer is low, there is an effect that it is possible to realize the optimum control of the file transfer amount by transferring the file as much as possible to the line.

Embodiment 2. FIG.
In the first embodiment, although the file transfer amount is controlled according to the calculation load of the computer, it is not considered what happens to the load of the entire computer, which is the sum of the calculation load of the computer and the load of the file transfer. Therefore, even if the file transfer amount is reduced, the load on the entire computer may exceed a predetermined reference value depending on the situation.
The second embodiment deals with this, and relates to the control of the file transfer amount when the load on the entire computer exceeds the reference value.

FIG. 4 is a diagram showing a computer load and a file transfer load in the file transfer function according to the second embodiment of the present invention.
In FIG. 4, the vertical axis indicates the load amount of the entire computer, and the horizontal axis indicates the time, and shows a method for adjusting the load due to the calculation of the computer and the load due to file transfer.
In other words, normally, both loads are adjusted so that the sum of the load from the computer operation and the load from the file transfer falls within the reference value, and the sum of the load from the computer operation and the load from the file transfer becomes the reference value. If it exceeds the limit, the file transfer is shown to be performed with the minimum transfer amount.

In the second embodiment, the file transfer amount control function 6 normally sets a reference value for the load amount of the entire computer as shown in FIG. 4, and the sum of the load caused by the calculation of the computer and the load caused by the file transfer. However, the calculation of the computer and the file transfer process are performed so that the value falls within the reference value.
If the load of the computer operation and the file transfer load do not fall within the standard value and the load of the computer operation is high, the file transfer load is reduced to the file transfer with the minimum transfer amount. to shrink. In other words, even if the load on the computer increases, the file transfer itself cannot be stopped completely, so a minimum transfer amount that is the transfer amount on the lowest line is set so that the file transfer does not fall below that. To.

  According to the second embodiment, the calculation load of the computer and the file transfer load are adjusted to be the reference value, and when the load exceeds the reference value, the file transfer is performed with the minimum transfer amount. Therefore, file transfer can be performed under any load condition.

It is a block diagram which shows the file transfer function by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the file transfer function by Embodiment 1 of this invention. It is a figure showing the relationship between the computer load and file transfer amount in the file transfer function by Embodiment 1 of this invention. It is a figure showing the computer load and the load of a file transfer in the file transfer function by Embodiment 2 of this invention.

Explanation of symbols

1 Computer 2 File transfer function 3 Computer load detection function 4 Data file 5 Network 6 File transfer amount control function

Claims (5)

  In the computer having the file transfer means for transferring the file in the computer to the network, the file transfer means includes a computer load detection means for detecting the load amount of the computer, and the computer load detected by the computer load detection means. A computer comprising file transfer amount control means for controlling a file transfer amount by controlling a processing speed of the file transfer according to a load amount.   The file transfer amount control means, when the load amount by the calculation of the computer obtained by excluding the load amount due to the file transfer from the load amount of the computer detected by the computer load detection means exceeds a threshold value 2. The computer according to claim 1, wherein the file transfer amount is reduced by reducing a processing speed of the file transfer in accordance with a load amount calculated by the computer.   3. The computer according to claim 2, wherein a minimum transfer amount is set as the file transfer amount regardless of a load amount calculated by the computer.   The file transfer amount control means adjusts the load of the file transfer and the load calculated by the computer so that the load amount of the computer detected by the computer load detection means falls within a predetermined reference value. The file transfer amount is controlled to a predetermined minimum transfer amount when the load amount of the computer exceeds the reference value due to an increase in load caused by the operation of the computer. calculator.   In a file transfer method for transferring a file in a computer to a network, the load amount of the computer is detected, and the file transfer amount is controlled by controlling the processing speed of the file transfer according to the detected load amount of the computer. A file transfer method characterized by controlling the file.

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