JPH08171456A - Parallel input/output device - Google Patents

Abstract

PURPOSE: To perform most efficient data transfer by automatically adjusting the transfer amount of data to be distributed to respective external storage devices corresponding to a data transfer rate. CONSTITUTION: A data input/output management control part 110 which receives a request for outputting the data of a data block 130 to a logical file 180 from a user 100 obtains the name of a device for constituting the logical file 180 and the data transfer rate from a file constitution information management control part 140 and automatically divides the data block 130 proportionally to the data transfer rate. Thereafter, input/output control parts 160, 161 and 162 are instructed so as to perform output to the disks 170, 171 and 172 of the respective external storage devices. Thus, the most efficient data transfer is made possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data _{transfer device} between a main memory device and an external memory device, and more particularly to parallel input / output.
Related to the _device .

[0002]

2. Description of the Related Art A conventional _{example in} this field is disclosed in
A disk drive parallel operation method shown in 255,960 _JP. In this _{conventional example} , a data block resident in a memory is evenly divided in sector units, and data is stored asynchronously at a unique speed on a disk of the same type to improve storage capacity and bandwidth. Here, since the disk drive is operating at its own speed, one drive may finish its work faster than the other drive, in which case the drive that finishes earlier will immediately proceed to the next work, that is, its It is supposed to start the transfer of the sector to be stored in the drive.

[0003]

In the conventional disk drive parallel operation method described above, one data block such as image data of a moving image is meaningful, and when it is necessary to display the data block on a display at a high speed, for example. , 1
In order to form a data block, it is necessary to wait for the completion of I / O of all drives synchronously, so if the data transfer speed differs for each drive, the data block transfer time is the slowest drive data transfer time The problem that it depends on.

[0004]

Parallel input device of the present invention, in order to solve the problems] receives the output request of data between _the data blocks and logical files on the main memory from the user,
_The data block, the data input-output management control unit for determining a plurality of divided and output units at a rate proportional to the data rate of the external storage device constituting _the logical file, _the logical file is configured device name, the data transfer rate of each _device, block _offset, and file structure information management control unit for managing the configuration information file information input and output unit, the input and output of data between _the between _the main storage device external storage device And an input / output control unit for performing.

According to the parallel input / output method of the present invention, an input / output request for data between a data block on a main storage device and a logical file is received from a user, and the data block is transmitted to a plurality of logical files constituting the logical file. Data input / output management control means for dividing the input / output unit by dividing at a ratio proportional to the data transfer rate of the external storage device, the device name in which the logical file is configured, the data transfer rate for each device, and the in-block offset And a file configuration information management control means for managing information on an input / output unit basis by a configuration information file, and an input / output control means for inputting / outputting data between the main storage device and the external storage device. .

[0006]

_Next , the present invention will be described with _reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.
_{It This parallel input / output device includes a} data input / output management control unit 110, a main storage device 120 that stores a data block 130 including data 131, 132, 133, a file configuration information management control unit 140, and a configuration information file 1.
50, an input / output control unit 160, 161, 162, and a logical file 180 including disks 170, 171, 172 as external storage devices.

FIG. 2 is a flowchart showing the processing of the data input / output management controller 110.

FIG. 3 shows a file configuration information management control unit 14.
11 is a flowchart showing the process of Step 0.

FIG. 4 shows input / output control units 160, 161, 1
62 is a flowchart showing the process of S62.

FIG. 5 shows an example of configuration information managed by the configuration information file 150.

[0012] Next, in FIG. 1 with reference to _FIGS
The operation of the _{parallel input / output device} will be described.

First, a user 100 stores a data block 130 in a main storage device 120 in a logical file 180.
The process performed when the data input / output management control unit 110 is requested to output the data is described.

As shown in FIG. 2, the data input / output management control unit 110 receives a request from the user 100 (step 201) and determines whether the request is data input or data output (step 202). .

If the request is a data output request,
First, the file configuration information management control unit 140 is requested to provide the device information (device name, data transfer rate) forming the logical file 180 (step 203).

As shown in FIG. 3, the file configuration information management control unit 140 checks whether the request is notification of configuration information or addition of configuration information (step 301). The device name, the data transfer rate, etc., which compose the logical file 180 are input and notified to the data input / output management control unit 110 (step 302).

Next, the data input / output management control unit 110 divides the data block 130 on the main storage device 120 in proportion to the data transfer speed of the constituent devices, and determines the input / output unit of each device (step 204). .

Here, assuming that the data obtained by dividing the data block 130 is data 131, 132, and 133, the data input / output management control unit 110
0, 171, 172, so that the input / output
0, 161, and 162 (step 205).

The input / output control units 160, 1 which have received the output request
As shown in FIG. 4, 61 and 162 check whether the request is an input or an output (step 401). If the request is an output request, the data 131 and 1 in the main storage device 120 are notified.
Is output to the _disk 170, 171, 172 32,133 (step 402). After waiting until the output is completed, an I / O completion notification is sent to the data input / output management control unit 110.
(Step 404).

The data input-output management control unit 110 _waits for the completion report from the input-output control unit 160, 161 and 162 (step 206), after all the output has been completed, block offset of the data output to each device The file configuration information management control unit 140 is requested to add the file and the input / output unit information to the configuration information file 150 (step 20).
7) The user 100 is notified of the completion of the output of the data block 130 (step 208).

As shown in FIG. 3, the file configuration information management control unit 140 checks whether the request is a notification of configuration information or addition of configuration information (step 301). The corresponding offset in the block and the input / output unit _information are registered in the configuration information file 150 (step 303).

Next, the processing when the request from the user 100 is an input request will be described.

[0023] First, the data input / output management control unit 110
The file configuration information management control unit 140
Device information (device name, off in block)
Request ** for set, input / output unit) (step 20)
9).

As shown in FIG. 3, the file configuration information management control unit 140 checks whether the request is a notification of configuration information or an addition of configuration information (step 301). Logical file 1 from 150
The device name, data transfer speed, offset in a block, input / output unit, etc., constituting the data input / output management control unit 11
0 is notified (step 302).

Next, the data input / output management control unit 110 inputs / outputs the data on the disks 170, 171 and 172 to the positions indicated by the offsets in the block on the main storage device 120, respectively. (Step 210).

The input / output control units 160 and 1 receiving the input request
61,162, as shown in FIG. 4, the request is checked whether the input or output (step 401), if the input request, the main storage the data on the _disk 170, 171 and 172 notified 120 The data is input to the position indicated by the upper block offset (step 403), and after waiting until the input is completed, the I / O completion notification is sent to the data input / output management control unit 110 (step 404).

The data input-output management control unit 110 _waits for the completion report from the input-output control unit 160, 161 and 162 (step 211), after all the input has been completed, the user 1
00 is notified of the completion of input of the data block 130 (step 212).

_Next , the main storage device 1 is used by using specific numerical values.
The process of outputting the data blocks on the logical file 180 to the logical file 180 will be described. As the configuration information of the logical file 180, the information 501 shown in FIG.
50, the logical file 180 is composed of disks 170, 171, and 172, and their data transfer rates are set to 6 MB / S, 3 MB / S, and 2 MB / S.
Then, the ratio of the data transfer rates A, B, and C is A: B: C = 6: 3: 2. Then, the size of the data block 130 is set to 22
Assuming 0 KB, the input / output unit for each disk device is: Disk 170: 6 × 220 / (6 + 3 + 2) = 120
[KB] Disk 171: 3 × 220 / (6 + 3 + 2) = 60
[KB] Disk 172: 2 × 220 / (6 + 3 + 2) = 40
[KB]. Data 131 and 13 in data block 130
Assuming that offsets 2 and 133 are a, b and c, respectively, the configuration information in the configuration information file 150 is updated as information 502 shown in FIG. When the I / O completion time is calculated from the calculated input / output unit, the disk 170, 1
The data transfer times of 71 and 172 are the same, and when calculated for disk 170, disk 170: 120 [KB] / 6 [MB / S] = 2
0 [ms]. Next, this data transfer time
_{Compared with the transfer time in the conventional example, in} the conventional example, since the same amount of data is output to each disk, the size of the main storage device 120 is 220 KB, so the input / output unit is 220/3 = 73.3. [KB]. Therefore, the data transfer time of each disk is as follows: Disk 170: 73.3 [KB] / 6 [MB / S] =
12.2 [ms] Disk 171: 73.3 [KB] / 3 [MB / S] =
24.4 [ms] Disk 172: 73.3 [KB] / 2 [MB / S] =
36.7 [ms], and the data transfer time of the slowest disk is the data transfer time of the data block 130. Therefore, it can be seen that the data transfer time is longer than that of the embodiment of FIG.

[0029]

As described above, according to the present invention,
In parallel input / output processing, when external storage devices with different data transfer speeds are configured, the transfer efficiency of the data distributed to each external storage device is automatically adjusted according to the data transfer speed. This enables good data transfer.

[Brief description of drawings]

FIG. 1 _is a configuration diagram _{of an} embodiment of the present invention _.

FIG. 2 is a flowchart showing processing contents of a data input / output management control unit in FIG _{. 1} ;

FIG. 3 is a flowchart showing processing contents of a file configuration information management control unit in FIG _{. 1} ;

FIG. 4 is a flowchart showing processing contents of an input / output control unit _in FIG _{. 1} ;

FIG. 5 is a diagram exemplifying configuration information managed by a logical file in FIG _{. 1} ;

[Explanation of symbols]

_{Reference Signs List} 100 User 120 Main storage device 130 Data block 131 _{, 132, 133} data 140 File configuration information management control unit 150 Configuration information file 160 _{, 161, 162} Input / output control unit 170 _{, 171, 172} disk 180 Logical file

Claims (4)

[Claims] 1. A receive output request of data between _the data blocks and logical files on the main memory from the user, _the data block, the data transfer rate of the plurality of external storage devices which constitute _the logical file a data output management control unit for determining the input-output unit is divided at a rate proportional to, device _{name the} logical file is configured, the data transfer rate of each _device, block _offset, the information input and output unit and the file structure information management control unit for managing the configuration information file, the parallel input-output device characterized by comprising input and output control unit for inputting and outputting data between _said main memory _the external storage device. 2. A data transfer rate of a plurality of external storage devices constituting the logical file, which receives a data input / output request between a data block on a main storage device and a logical file from a user. The data input / output management control means for determining the input / output unit by dividing it at a ratio proportional to, the device name in which the logical file is configured, the data transfer rate for each device, the block offset, and the information of the input / output unit. A parallel input / output method comprising: a file configuration information management control unit that manages a configuration information file; and an input / output control unit that inputs / outputs data between the main storage device and the external storage device. 3. When the user requests the data block to be output to the logical file, the data input / output management control unit receives a request from the user, and the request is data input or data input. If it is a data output request, the file configuration information management control means is requested of the device name and the data transfer speed as the device information configuring the logical file, and the file configuration information management The control means checks whether the request is notification of configuration information or addition of configuration information. If the request is configuration information, the device name and the data transfer rate configuring the logical file are input from the configuration information file, and the data input / output is performed. Notifying the management control means, the data input / output management control unit divides the data block in proportion to the data transfer rate of the constituent device, The input / output unit is determined, and the data input / output management control unit instructs the input / output control unit to output the data obtained by dividing the data block to the external storage device. The control means checks whether the request is an input or an output, and in the case of an output request, outputs the notified data in the main storage device to the external storage device,
After the output has waited until completion, and notifies a completion notification of I / O to the data input and output management control unit, said data input and output management control means _waits for the completion report from the output control unit, all output After the completion of the above, the file configuration information management control unit is requested to add the block offset of the data output to each device and the input / output unit information to the configuration information file, and the output completion of the data block to the user is completed. The file configuration information management control unit checks whether the request is notification of configuration information or addition of configuration information, and in the case of addition of configuration information, offset in block corresponding to device name and input / output unit _information 3. The parallel input / output method according to claim 2, wherein is registered in the configuration information file. 4. When the request from the user is an input request, the data input / output management control unit instructs the file configuration information management control means to use a device name as device information forming the logical file, Requesting an offset within a block and an input / output unit, the file configuration information management control means checks whether the request is a notification of configuration information or addition of configuration information, and in the case of a notification of configuration information, from the configuration information file, The device name, data transfer rate, in-block offset, and input / output unit forming the logical file are notified to the data input / output management control unit, and the data input / output management control unit sets the data on the external storage device to the main storage unit The input / output control which has instructed the input / output control means to input at the position indicated by the offset in the block on the storage device and has received the input request The stage checks whether the request is an input or an output, and if it is an input request, inputs the notified data in the external storage device to the position indicated by the in-block offset in the main storage device, and completes the input. after waiting notifies the completion notification of I / O to the data input and output management control unit, _waits for the completion report from the data input-output management control means the output control means, after all the input has been completed 4. The parallel input / output method according to claim 2 or 3, wherein the user is notified of the completion of input of the data block.