Archive system VFS design algorithm aiming at real-time media data

A file system and processing algorithm technology, applied in the direction of computing, digital data processing, special data processing applications, etc., can solve the problem of low efficiency of real-time media data storage

Inactive Publication Date: 2010-07-21
SEACOMES TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0011] The present invention is to provide a file system technology, which can effectively solve the

Method used

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  • Archive system VFS design algorithm aiming at real-time media data
  • Archive system VFS design algorithm aiming at real-time media data
  • Archive system VFS design algorithm aiming at real-time media data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0089] For the design and execution process and time chart of the entire system, please refer to the attached drawing of the instruction manual Figure 9 : VFS system algorithm design execution flow and time chart detailed description:

[0090] ● create_read_session

[0091] A. Call check_acceptance(), and then a WAS pointer will be returned, which means that the establishment request of this session has been accepted, so this session will be added to the Accepted Session List.

[0092] B. If there are no other sessions waiting, call begin_startup_mode() to enter startup mode.

[0093] See the accompanying drawings in the manual Figure 10 : create_read_session design execution process

[0094] create_write_session

[0095] A. From the perspective of VFS disk scheduling, reading and writing are the same. The main difference is that for initial conditions, the write session buffer is empty, while the read session buffer is full.

[0096] B. When a write session request is...

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PUM

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Abstract

The invention relates to an archive system VFS design algorithm of real-time media data. The disk space is automatically divided and formatted by a file system, and independent sub regions and disk information are maintained by software. The access of the data is processed in a way according to large data blocks, and in addition, files are distributed and stored in continuous disk positions. The user service quality can be ensured through calculating the band width capable of being supported by the disk. Vacant nodes are managed by a vacant node chain table of the disk structure for the space distribution of the files. The file writing space is pre-distributed, after the pre-distribution, the dynamic regulation is carried out, in addition, the most proper space is found in the vacant node chain table of the disk structure to be distributed.

Description

Technical field [0001] The invention belongs to the technical field of disk file system and real-time media data storage and transmission. Background technique [0002] The file structure generally adopted by the current operating system includes index nodes and data. [0003] Index node: Also known as I node, in the file system structure, it contains a record of information about the corresponding file, such information includes file permission, file name, file size, storage location, creation date, etc. The inodes of all files in the file system are kept in the inode table. Data: The actual content of the file. Can be empty or very large and have its own structure. [0004] Take the commonly used ext2 format as an example: the data block size of the ext2 file system is generally 1024B, 2048B or 4096B. [0005] The index node (inode) of the ext2 file system adopts a multiple index structure, which is mainly reflected in direct pointers and three indirect pointers. The ...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 李继凯
Owner SEACOMES TECH
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