KR101973353B1 - Apparatus and Method for executing Application installed in Cloud Storage - Google Patents

Abstract

The present invention relates to a method for accelerating the execution of an application installed in cloud storage for increasing the execution speed of an application installed in cloud storage on a network by minimizing a delay of application execution time due to network download. The method performed by a user terminal for accelerating the execution of an application installed in a virtual file system (VFS) based cloud storage through an operating system (OS) of the user terminal comprises: a step (a) of receiving a request of a file fragment for a specific application from the VFS; a step (b) of determining, as a block size, either a first reference size or a second reference size larger than the first reference size, by using size information or file fragment position information of the file fragment; a step (c) of requesting a file block of the block size to the cloud storage and storing the file block in an internal area; a step (d) of providing the file fragment to a corresponding OS based on the stored file block; and a step (e) of inquiring whether a cache file corresponding to the file fragment exists in the internal cache area. Therefore, by minimizing the delay of application execution time due to the network download compared to the existing one, it is possible to increase the execution speed of the application installed in the cloud storage on the network.

Description

[0001] The present invention relates to an apparatus and method for accelerating an application installed in a cloud storage,

The present invention relates to a technology for executing an application installed in a cloud storage on a network in a user terminal, and more particularly, to a technology for managing a cloud storage To a technique for accelerating the execution speed of an installed application.

The Virtual File System (VFS) is an abstraction layer on the physical file system. The purpose of a VFS is to allow a client application (or application) to access multiple file systems in the same way. For example, using VFS, client applications can directly access local storage and storage on the network (or cloud storage), so they do not feel the difference between local and network. In addition, it can be accessed without feeling the difference of operating system (OS) such as Microsoft Windows, Mac OS, Unix, etc., and difference of file system.

VFS defines the interfaces and specifications of the kernel and the actual file system. Therefore, you can simply add a new file system to the kernel according to that specification. The file system may need to be modified or recompiled for compatibility with new open versions. Or, if the operating system is operating in backward compatibility mode for the specification changes, each file system can be used in the new version of the operating system.

SMB (server message block) is a file / printer sharing protocol used in Windows environment such as Windows 95 or Windows NT. TCP / IP or NetBEUI (Net BIOS extended user interface) . It is widely used with NetWare clients, originally used in NetBEUI environments such as MS-Networks or LAN Manager. Because NetBEUI packets do not have a network identifier, they can only be accessed through routers. If you are using SMB as a base, there is a protocol that allows you to connect beyond routers. This is called Common Internet File System (CIFS). The advantage of SMB (CIFS) is that it is easier and easier to operate SMB than when using Windows as a standard client environment and using Unix standard applications such as Network File System (NFS) client or IPr / IPd to be.

Network File System (NFS) is a protocol developed by Sun Microsystems in 1984. Helps a user on a client computer access files on the network in a similar way to accessing directly attached storage. Like many other protocols, it is based on the ONC RPC system. The network file system is an open standard defined in the RFC, so anyone can implement it.

Conventionally, when a smartphone terminal that provides a cloud service as a virtual file system to an external memory area is requested to execute an application installed in the cloud area, the application is downloaded and executed as a variable fragment file of 4 Kbytes to 1024 Kbytes, The application frequently requests a file fragment of a corresponding application in a small area. This causes a problem that the execution speed of the application is significantly slower than that of an application file stored in a physical external storage device such as an SD memory card there was.

In order to solve this problem, the file fragment size of the application downloaded from the cloud storage when the application installed in the cloud storage on the network is fixed in the user terminal is fixed as a fixed size file block, and the execution speed can be improved.

However, there is a problem in downloading unnecessary part caused by downloading as a fixed size file block and increase in driving time depending on the number of downloads, and a method for improving the execution speed is needed.

Open Patent Publication No. 10-2013-0064292 (published on June 18, 2013)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and it is an object of the present invention to minimize the delay of application execution time due to network downloading and the downloading of unnecessary area to improve the execution speed upon execution of applications installed in the cloud storage on the network , And an apparatus and method for accelerating execution of an application installed in a cloud storage.

That is, the user terminal downloads the application file downloaded from the cloud storage when the application installed in the cloud storage on the network is fixed to a specific size and downloads the application file to improve the execution speed of the application.

In order to accomplish the above object, in order to accelerate an application installed in a VFS (Virtual File System) -based cloud storage through an operating system (OS) of a user terminal according to an aspect of the present invention, A file fragment request receiving unit for receiving a file fragment for a specific application from the VFS; A size determining unit that determines either a first reference size or a second reference size that is larger than the first reference size as a block size by using the size information of the file fragment or the file fragment position information; A file storage unit for requesting a file block of the block size to the cloud storage and storing the file block in an internal area; A file fragment providing unit for providing the file fragment to a corresponding OS based on the stored file block; And a cache inquiry unit for inquiring whether or not a cache file corresponding to the file fragment exists in the internal cache area.

In order to achieve the above object, a method performed by the user terminal for accelerating an application installed in a VFS (Virtual File System) -based cloud storage through an operating system (OS) of a user terminal according to an aspect of the present invention includes: (a) receiving a file fragment for a specific application from the VFS; (b) determining, as a block size, either a first reference size or a second reference size larger than the first reference size, using the size information or the file fragment position information of the file fragment; (c) requesting the file block of the block size to the cloud storage and storing the file block in the internal area; (d) providing the file fragments to a corresponding OS based on the stored file blocks; And (e) inquiring whether or not a cache file corresponding to the file fragment exists in the internal cache area.

As described above, according to various aspects of the present invention, when a user terminal downloads a fragment size of an application file downloaded from a cloud storage when executing an application installed in a cloud storage on a network, the fragment size of the application file or the cloud storage image file fragment location information is considered By fixing the size of a specific block and downloading it, it is possible to minimize the delay in application execution time due to the network download compared to the existing one, thereby improving the execution speed when an application installed in the cloud storage on the network is executed.

1 is a configuration diagram of a communication system to which the present invention is applied;
2 is a configuration diagram of a user terminal according to an embodiment of the present invention;
3 is a configuration diagram of an apparatus for accelerating an application installed in a cloud storage according to an embodiment of the present invention;
4 is a flowchart of a method for accelerating an application installed in a cloud storage according to the first embodiment of the present invention;
5 is a flowchart of a method for accelerating an application installed in a cloud storage according to a second embodiment of the present invention;
6 is an illustration of a relationship diagram of a file fragment and a file block according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a communication system according to an embodiment of the present invention. The communication system to which the present invention is applied may include a communication network 1, a user terminal 2, and a cloud storage 3.

The communication network 1 may be a single network or a composite network that enables communication between the user terminal 2 and the cloud storage 3 by wire, wireless, and / or internet.

The user terminal 2 is a mobile terminal device capable of communicating at least with the cloud storage 3, and may be a mobile terminal device capable of, for example, voice communication, video communication, data communication and Internet communication, a PDA, PC or the like.

The cloud storage 3 is a storage device on the communication network 1 and a storage device by which the user terminal 2 can access anytime and anywhere via the communication network 1. [

The present invention can be applied to all systems including the user terminal 2 and the cloud storage 3. In the following description of the embodiment of the present invention, an Android-based OS is installed in the user terminal 2 This is an example.

The user terminal 2 in the embodiment of the present invention is able to access the APK (Android) in the internal memory of the user terminal 2 when the application of the user terminal 2 is not compiled with the Internalonly option. In this case, the external memory area is allocated to the cloud storage 3 on the network 1, and the external storage area is allocated to the cloud storage 3 on the network 1. In this case, The corresponding ASEC file is stored in the cloud storage 3 and the user terminal 2 downloads and executes the corresponding application stored in (installed in) the cloud storage 3. At this time, the user terminal 2 downloads the file from the cloud storage 3 using the SMB or NFS protocol.

FIG. 2 is a detailed configuration diagram of a user terminal according to an embodiment of the present invention. The user terminal 2 includes an operating system (OS) 21, a virtual file system (VFS) 22, a cloud file system 23 and a cloud file cache 24.

The OS 21 is an operating system installed in the user terminal 2, and can be any operating system including an Android series, an iOS series, a Windows series, a BlackBerry, and a Symbian. In this embodiment, an Android-based OS is described as an example .

The VFS 22 defines interfaces and specifications of the kernel and the actual file system to mediate communication between the OS 21 and the cloud file system 23 and is the same as the function of the VFS described above, .

The cloud file system 23 stores the size information of the file fragment a requested from the VFS 22 or the file fragment position at the time of execution of the application installed in the cloud storage 3 on the network 1 in the user terminal 2 Is a system for determining a file block (b) of a specific size by using the file block (b) and for accelerating the execution speed of the application by downloading the file block (b) of the determined specific size from the cloud storage (3).

Here, the file block (b) is an area encompassing the file fragment (a) as shown in Fig. Concretely, the file fragment (a) defines a file requested or provided between the VFS 22 and the cloud file system 23 as a file fragment (a), and between the cloud file system 23 and the cloud storage 3 A file having a size determined by the size determination unit 233 corresponding to the file fragment (a) as a file to be transmitted is defined as a file block (b).

The cloud file cache 24 represents an internal area of the cloud file system 23, specifically an internal cache area (cache storage area). For example, the cloud file system 23 may store the file block b downloaded from the cloud storage 3 in the internal cache area 24 as a cache file.

The internal area mentioned below represents an internal cache area in the user terminal, and all kinds of data or files stored in the internal cache area can be referred to as a cache file. The predetermined size mentioned below corresponds to either the first reference size or the second reference size.

FIG. 3 shows a configuration of an apparatus for accelerating execution of an application installed in the cloud storage 3 according to an embodiment of the present invention, and shows the detailed configuration of the cloud file system 23 shown in FIG. The cloud file system 23 may include a file fragment request receiving unit 231, a cache inquiry unit 232, a size determination unit 233, a file storage unit 234, and a file fragment providing unit 235.

The file fragment request receiving unit 231 receives the file fragment request from the VFS 22 when executing an application installed in the cloud storage 3 on the network 1 via the operating system 21 of the user terminal 2, Size file fragment request.

For example, the file fragment request receiving unit 231 receives an SMB (Server Message Block) protocol from the VFS 22 when the OS 21 requests the file access to the VFS 22 based on POSIX (Portable Operating System Interface) A variable size file fragment (a) may be requested according to an NFS (Network File System) protocol. In this embodiment, the variable size file fragment (a) has a certain size of 4 Kbytes to 1024 Kbytes.

The cache inquiry unit 232 inquires of the file fragment request receiving unit 231 whether the cache file corresponding to the file fragment (a) of the requested application exists in the cloud file cache 24 as the internal cache area.

If the cache file does not exist in the cache inquiry result cache storage area 24 of the cache inquiry unit 232, the size determining unit 233 determines the size of the first cache file using the size information of the file fragment (a) And determines either the reference size or the second reference size larger than the first reference size as the block size.

Here, the size information of the file fragment (a) means information including the size of the file fragment (a), and the size information of the file fragment (a) mentioned below is used in a meaning equivalent to the size of the file fragment (a).

Here, the block size is the size of the file block (b), where the first reference size and the second reference size are suitable for a multiplier of 4 or more in any one of the sizes of 4 Kbytes to 1024 Kbytes, 1 larger than the reference size.

Here, the file fragmentation location information includes the location information of the file fragment (a) on the cloud storage 3 and the history of the location information of the already downloaded file fragment (a), and the size determination unit 233 You can see the distance between each offset.

The size determining unit 233 determines the block size as either the first reference size or the second reference size using the size information of the file fragment (a) and the predetermined size. The block size is determined as the first reference size when the size of the file fragment (a) is smaller than the predetermined size, and the block size is determined as the second reference size when the size of the file fragment (a) exceeds the predetermined size.

For example, when the size information of the file fragment (a) is compared with the first reference size and the size information of the file fragment (a) is equal to or smaller than the first reference size, the size determination section 233 determines the first reference size as the block size If the size information of the file fragment (a) exceeds the first reference size, the size determining unit 233 determines the second reference size as a block size (hereinafter, referred to as 'first spare block size' Size ').

As another example, the size determination unit 233 determines the block size using the file fragment position information, specifically, by using the file fragment position information and the predetermined size, the block size is determined as the first reference size or the second reference size Size is determined.

For example, if the difference in distance between the position information of the downloaded file fragment (a) included in the file fragment position information and the position information of the file fragment (a) to be downloaded (hereinafter referred to as 'offset distance' And determines a block size (hereinafter referred to as a 'second spare block size') in comparison with the set size. When the distance between the offsets exceeds the preset size, the size determining unit 233 determines the block size as the second reference size, and if the distance between the opsens is less than the predetermined size, the size determining unit 233 determines the first reference size The block size is determined. Here, the predetermined size may be regarded as the second reference size.

As another example, the size determination unit 233 can determine the block size using the size information of the file fragment (a) and the file fragment position information. More specifically, the size determination unit 233 may determine the block size using the first spare block size and the second spare block size The larger value is determined as the block size. If the first spare block size is the first reference size, the size determining unit 233 can finally determine a larger one of the determined second spare block size and the first spare block size as the block size. If the first spare block size is the second reference size, the size determining unit 233 may determine the first spare block size as the block size without determining the second spare block size.

Here, the first reference size and the second reference size included in the predetermined size are suitable for a multiplier of 4 or more in a specific size of 4 Kbytes to 1024 Kbytes, and the second reference size is larger than the first reference size. The first spare block size and the second spare block size are either a first reference size or a second reference size.

The file fragment providing unit 235 provides the file fragment a requested from the VFS 22 to the corresponding OS 21 based on the cache file stored in the file storage unit 234, If the corresponding cache file exists in the cache inquiry result storage area 24 of the cache memory 24, the corresponding file fragment a is provided to the corresponding OS 21 based on the existing cache file, (A) is provided to the corresponding OS 21 based on the cache file of the file block (b) downloaded and stored as described above if the corresponding cache file does not exist in the cache inquiry result storage area 24 of the cache inquiry result storage area 24 do.

Hereinafter, a flow chart of a method for accelerating execution of an application installed in a cloud storage according to an embodiment of the present invention will be described in parallel with the operation of the corresponding apparatus since it is applied to the apparatuses shown in Figs.

4 is a flowchart of a method for accelerating an application installed in a cloud storage according to the first embodiment of the present invention.

When the OS 21 requests the file access to the VFS 22 based on POSIX (Portable Operation System Interface), the cloud file system 23 receives the Server Message Block (SMB) protocol and Network File (NFS) System) protocol according to a protocol including a protocol (S101).

The cloud file system 23 inquires whether there is a cache file corresponding to the file fragment a in the internal cache area (at the time of first file access) (S103), and if there is no cache file (S104) (S105), either the first reference size or the second reference size is determined as the block size by using the size information or the file fragment position information of (a).

For example, the block size is determined using the size information and the predetermined size of the file fragment (a), and the size information of the file fragment (a) is compared with the preset size, and the size of the file fragment The cloud file system 23 determines the first reference size as a block size (hereinafter, referred to as a 'first spare block size'). If the size information of the file fragment (a) exceeds the predetermined size, the cloud file system 23 determines the second reference size as a block size (hereinafter, referred to as 'first spare block size'). Here, the predetermined size may be regarded as the first reference size.

As another example, the block size is determined using the file fragment position information, and more specifically, the block size is determined using the file fragment position information and the predetermined size. (Hereinafter referred to as 'distance between offsets') between the position information of the downloaded file fragment (a) included in the file fragment position information and the position information of the file fragment (a) to be downloaded is compared with a preset size To determine a block size (hereinafter, referred to as 'second spare block size'). If the distance between the offsets is less than the predetermined size, the cloud file system 23 determines the first reference size as the block size, and if the distance between the opsens exceeds the predetermined size, the cloud file system 23 sets the second reference size Size. Here, the predetermined size may be regarded as the second reference size.

In another example, the cloud file system 23 can determine the block size using the size information of the file fragment (a) and the file fragment position information. Specifically, the first spare block size and the second spare block size The larger value is determined as the block size. If the first spare block size is the first reference size, the cloud file system 23 can finally determine a larger value of the determined second spare block size and the first spare block size as the block size. If the first spare block size is the second reference size, the cloud file system 23 may finally determine the first spare block size as the block size without determining the second spare block size.

The cloud file system 23 asks the cloud storage for the file block b having the block size determined for the specific application (S106-a), downloads it (S106-b) and stores it in the internal cache area (S107) The file fragment (a) is provided to the corresponding OS based on the cache file of the block (b) (S109).

5 is a flowchart illustrating a method for accelerating an application installed in a cloud storage according to a second embodiment of the present invention.

When the OS 21 requests the file access to the VFS 22 based on POSIX (Portable Operation System Interface), the cloud file system 23 receives the Server Message Block (SMB) protocol and Network File (NFS) (A) is requested for a specific application according to a protocol including a protocol (System) protocol (S201).

The cloud file system 23 inquires whether there is a cache file corresponding to the file fragment (a) in the internal cache area (at the Nth access request) (S203). If the cache file exists, And provides the file fragment (a) to the OS 21 (S205).

If the cache file does not exist (S206), the cloud file system 23 determines either the first reference size or the second reference size as the block size using the size information of the file fragment (a) and the file fragment position information (S207).

The method of determining the block size has already been described with reference to step S105 shown in FIG. 4, and a detailed description thereof will be omitted.

The file block b having the block size decided for the specific application is requested to the cloud storage 3 (S208-a), downloaded (S208-b) and stored in the internal cache area (S209).

(A) to the OS 21 based on the cache file of the stored file block (b) (S211).

According to the embodiment of the present invention, 20 different applications of size / type among the top 100 in the Play Store are classified into three groups and the simulation results are shown in Table 1 in comparison with the prior art.

[Table 1]

Specifically, in Table 1, when the application moves from the internal memory of the user terminal to a) SD memory card, b) the general case of moving to the cloud storage area (general), c) (Case 1) when the block size is determined using the file fragment size and the first reference size (Case 1), and when the block size is determined (fixed size 1M in the simulation) The execution delay rate is calculated based on the results of simulation of 10 times of the case where the block size is determined using the file fragment position information and the second reference size (Case 2). Here, the first reference size is 512 KB, the second reference size is 1 MB, and the simulation environment does not define the first reference size and the second reference size.

Deviations were made for each application, but improvements were made in order of Case1, Fixed IM, and Case2, and download overhead was minimized in Case1, Case2, and Fixed 1M.

In the first group of applications, 9 out of 20 SD memory cards, the execution delay has decreased from 1.29 times to 1.23 times, which is an average of 18% improvement compared to SD memory cards. 6 applications out of 20 are in the second group. As a result, the execution delay is reduced from 1.82 times to 1.52 times in comparison with the case of SD memory card, and the average improvement is 32%. In the third group, 5 out of 20 applications, the execution delay decreased from 2.04 times to twice as much as that of SD memory cards, resulting in an average improvement of 2.7%.

For applications in the first and second groups, the average speed was improved by 24%, and the execution speed of the SD memory card was improved from 1.5 times to 1.33 times.

Meanwhile, according to the method for accelerating execution of an application installed in the cloud storage, a computer-readable recording medium on which a program for executing the method is stored can be implemented.

In addition, according to a method for accelerating execution of an application installed in the above-described cloud storage, an application stored in a computer-readable recording medium may be implemented to execute the method in combination with hardware.

On the other hand, a computer program stored in a computer-readable recording medium for implementing a method for accelerating execution of an application installed in the above-described cloud storage may be implemented in the computer.

For example, as described above, a method for accelerating execution of an application installed in a cloud storage according to an embodiment of the present invention includes a computer-readable recording medium including program instructions for performing various computer-implemented operations, May be implemented as an application stored on a medium. The computer-readable recording medium may include a program command, a local data file, a local data structure, or the like, alone or in combination. The recording medium may be those specially designed and constructed for the embodiments of the present invention or may be those known to those skilled in the computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floppy disks, and ROMs, And hardware devices specifically configured to store and execute the same program instructions. Examples of program instructions may include machine language code such as those generated by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: communication network (or network) 2: user terminal
3: Cloud Storage 21: Operating System (OS)
22: VFS (Virtual File System) 23: Cloud File System
24: CLEARED FILE Cache 231: File fragment request receiver
232: cache inquiry unit 233: size determining unit
234: file storage unit 235:
a: file fragment b: file block

Claims (25)

An apparatus for accelerating an application installed in a VFS (Virtual File System) -based cloud storage through an operating system (OS) of a user terminal,
A file fragment request receiving unit for receiving a file fragment for a specific application from the VFS;
A size determination unit for determining, as a block size, any one of a first reference size or a second reference size larger than the first reference size by using the file fragment position information of the file fragment;
A file storage unit for requesting a file block of the block size to the cloud storage and storing the file block in an internal area; And
And a file fragment providing unit for providing the file fragment to the corresponding OS based on the stored file block. The method according to claim 1,
Wherein the size determination unit determines the block size as either the first reference size or the second reference size using the file fragment position information and the file fragment size information. Device. The method according to claim 1,
Wherein the internal area is an internal cache area in the user terminal. The method of claim 3,
And a cache inquiry unit for inquiring whether or not a cache file corresponding to the file fragment exists in the internal cache area,
Wherein the file storage unit requests the file block of the block size from the cloud storage if the cache file does not exist and stores the block in the internal cache area,
Wherein the file fragment providing unit provides the file fragment to the corresponding OS based on the cache file of the file block stored in the storage unit. 5. The method of claim 4,
Wherein the file fragment providing unit provides the file fragment to the corresponding OS based on the cache file if the cache file exists. The method according to claim 1,
Wherein the size determining unit determines the block size to be either the first reference size or the second reference size using the file fragment position information and the predetermined size. The method according to claim 6,
Wherein the predetermined size corresponds to one of the first reference size and the second reference size. 8. The method of claim 7,
The size determining unit compares the difference in distance between the location information of the downloaded file fragments and the location information of the file fragments to be downloaded to a preset size
Determining the block size as the first reference size when the distance difference is less than or equal to the predetermined size and determining the block size as the second reference size when the distance difference exceeds the preset size. Accelerated execution of applications installed in storage. The method according to claim 1,
Wherein the file fragment location information includes location information of the file fragment on the cloud storage image. The method according to claim 1,
Wherein the file fragment request receiving unit receives a file fragment according to a protocol including an SMB (Server Message Block) protocol and an NFS (Network File System) protocol. The method according to claim 1,
Wherein the file slice request receiving unit receives the file slice from the VFS when the OS requests a file access to the VFS based on POSIX (Portable Operation System Interface). A method performed at the user terminal for accelerated execution of an application installed in a VFS (Virtual File System) -based cloud storage through an operating system (OS) of a user terminal,
(a) receiving a file fragment for a specific application from the VFS;
(b) determining as a block size any one of a first reference size or a second reference size larger than the first reference size by using the file fragment position information of the file fragment;
(c) requesting the file block of the block size to the cloud storage and storing the file block in the internal area; And
(d) providing the file fragments to a corresponding OS based on the stored file blocks; A method of accelerating an application installed in a cloud storage. 13. The method of claim 12,
Wherein the step (b) determines the block size to be either the first reference size or the second reference size by using the file fragment position information and the file fragment size information. How to accelerate. 13. The method of claim 12,
Wherein the internal area is an internal cache area in the user terminal. 15. The method of claim 14,
(e) inquiring whether or not a cache file corresponding to the file fragment exists in the internal cache area,
If the cache file does not exist, the step (c) requests the file block of the block size to the cloud storage and stores the file block in the internal cache area,
Wherein the step (d) provides the file fragment to the corresponding OS based on the cache file of the file block. 16. The method of claim 15,
Wherein the step (d) provides the file fragment to the corresponding OS based on the cache file if the cache file exists. 13. The method of claim 12,
Wherein the step (b) determines the block size to be either the first reference size or the second reference size using the file fragment position information and the predetermined size. . 18. The method of claim 17,
Wherein the predetermined size corresponds to one of the first reference size and the second reference size. 19. The method of claim 18,
The step (b) compares the difference in distance between the location information of the downloaded file fragments and the location information of the file fragments to be downloaded with a predetermined size,
Determining the block size as the first reference size when the distance difference is less than or equal to the predetermined size and determining the block size as the second reference size when the distance difference exceeds the preset size. How to accelerate applications installed in storage. 13. The method of claim 12,
Wherein the file fragment location information includes location information of the file fragment on the cloud storage image. 13. The method of claim 12,
Wherein the step (a) receives a file fragment according to a protocol including an SMB (Server Message Block) protocol and an NFS (Network File System) protocol. 13. The method of claim 12,
Wherein the step (a) receives the file fragment from the VFS when the OS requests the file access to the VFS based on POSIX (Portable Operation System Interface). A computer-readable recording medium storing a program for causing a computer to execute an acceleration execution method of an application installed in the cloud storage according to any one of claims 12 to 22. 22. An application stored on a computer readable recording medium for executing an accelerated execution method of an application installed in the cloud storage according to any one of claims 12 to 22 in combination with hardware. 22. A computer program stored in a computer readable recording medium for causing a computer to execute an accelerated execution method of an application installed in the cloud storage according to any one of claims 12 to 22.

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