JP2573816B2 - Parallel input / output device and 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 data transfer device between a main storage device and an external storage device, and more particularly to a parallel input / output device and method .

[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 processing earlier than the other drive, and in that case, the drive that finished earlier will immediately perform the next processing, that is, the next processing The transfer of the sector stored in the drive is started.

[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 the operation.

In the parallel input / output method of the present invention, a data input / output request between a data block on a main storage device and a logical file is received from a user, and the data block is transferred to a plurality of logical files constituting the logical file. A first procedure for determining an input / output unit by dividing the data at a rate proportional to the data transfer rate of the external storage device, the device name of the logical file, the data transfer speed for each device, the offset in the block, the input It is characterized by including a second procedure for managing output unit information by a configuration information file and a third procedure for inputting and 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.
_{You. The parallel input / output device includes a} data input / output management control unit 110, a main storage device 120 for storing 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, device information (device name, data transfer speed) constituting the logical file 180 is requested to the file configuration information management control unit 140 (step 203).

The file structure information management control unit 140, as shown in FIG. 3, the request or notification of configuration information, checks whether additional configuration information (step 301), passing configuration information
In the case of intellectual, logical file 1 from the configuration information file 150
The device name, data transfer speed, and the like constituting the device 80 are input and notified to the data input / output management control unit 110 (step 30).
2).

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 and 1 receiving 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.

First, the data input / output management control unit 110 requests the file configuration information management control unit 140 for device information (device name, offset in block, input / output unit) constituting the logical file 180 (step 209). ).

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 An input is made at the position indicated by the upper block offset (step 403), and after waiting until the input 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 211), after all the input has been completed, the user 1
00 is notified of the input completion of the data block 130 (step 212).

_Next , using the specific numerical values, the main storage 1
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 is
_{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, by automatically adjusting the transfer amount of data distributed to each external storage device according to the data transfer speed, the most efficient Good data transfer becomes possible.

[Brief description of the 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)

(57) [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 input / output request between a data block on a main storage device and a logical file is received from a user, and the data block is transferred to a plurality of external storage devices constituting the logical file. A first procedure of determining an input / output unit by dividing the logical file at a ratio proportional to the information, and information on the name of the device in which the logical file is configured, the data transfer speed for each device, the offset in the block, and the input / output unit A parallel input / output method, comprising: a second procedure of managing by a file; and a third procedure of inputting and outputting data between the main storage device and the external storage device. 3. When a user requests to output the data block to the logical file, a request is received from the user according to the first procedure , and the request is input of data or output of data. If the request is a data output request, a control to perform the second procedure is performed.
Relative control unit, wherein the requesting device name and the data transfer rate as the device information constituting the logical file, by the second procedure, the request or notification of configuration information, checks whether additional configuration information, configuration In the case of information notification, the name of the device constituting the logical file and the data transfer rate are input from the configuration information file, and the first procedure is performed.
Notifies the control unit, by the first procedure, divided in proportion to the data rate of the component devices of the data block, to determine the input and output unit of each device, the data obtained by dividing the data block, the first In one step
To output more external storage device, a row of the third procedure
Instructs the power sale control unit receives the output request, by the third procedure, the request is checked whether the input or output, if the output request, the external stores the notified data on the main storage device has been and outputs the device, after the output waited until completion, and notifies the control unit that the completion notification of I / O performs the first step, by said first step, or the control unit for performing the third step Waiting for the completion notification, after all output is completed, to add the offset in the block and the input / output unit information of the data output to each device to the configuration information file,
A request is sent to the control unit that performs the second procedure, and the user is notified of the completion of the output of the data block. According to the second procedure , it is checked whether the request is notification of configuration information or addition of configuration information. 3. The parallel input / output method according to claim 2, wherein in the case of adding, the offset in the block corresponding to the device name and the input / output unit information are registered in the configuration information file. 4. When the request from the user is an input request, the first procedure instructs the control unit that performs the second procedure to provide a device name as device information constituting the logical file. , An offset in a block, and an input / output unit. According to the second procedure , it is checked whether the request is a notification of configuration information or an addition of configuration information. device names that comprise the file, the data transfer rate, and notification block offset, and input and output units to the control unit for performing the first step, by said first step, each of the main data on the external storage device It instructs the control unit that performs the third step to enter the position indicated by the block offset on the storage device, receives the input request, by the third procedure, whether the request is input or output When the input is requested, the notified data on the external storage device is input to the position indicated by the offset in the block on the main storage device, and after waiting until the input is completed, the I / O completion notification is performed. Follow the first procedure
The controller waits for a completion notification from the controller performing the third procedure according to the first procedure, and after all the inputs are completed, inputs the data block to the user. 4. The parallel input / output method according to claim 2, wherein completion is notified.