Method for realizing quick data storage under Linux

A fast storage and data caching technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of time consumption, reduce the efficiency of the acquisition system, etc., to achieve the effect of improving storage speed and eliminating copying

Inactive Publication Date: 2011-08-10
HARBIN ENG UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

This method of transferring data layer by layer consumes a lot of time and reduces the efficiency of the acquisition system
Especially when the frequency of the collected signal is high and the amount of data is large, this method becomes a bottleneck to improve the efficiency of the entire system

Method used

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  • Method for realizing quick data storage under Linux
  • Method for realizing quick data storage under Linux
  • Method for realizing quick data storage under Linux

Examples

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Embodiment Construction

[0031] The present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Step 1, after the OMAP processor is powered on, the ARM core starts Linux, enters process 202, mounts the tempfs file system, and then sets up two data cache files (such as DataCacheFile_a and DataCacheFile_b) under the mount point. The DSP core enters process 302 and waits for the search address notification.

[0033] Step 2, the ARM core enters process 203, divides the two cache files into blocks with a size of 4K bytes, press figure 1 The file identifiers and block serial numbers of all blocks are initialized as shown, and then the DSP core is notified to search for the storage address of the data cache file on SDRAM.

[0034] Step 3: After the DSP core receives the search address interrupt, it enters into process 303 to search for the storage addresses of the blocks of the two cache files in the SDRAM, and save the addresses....

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Abstract

The invention provides a method for realizing quick data storage under Linux. The method comprises the following steps of: (1) establishing a data caching document; (2) searching a physical unit address corresponding to the data caching document; (3) writing data to be stored into a physical unit corresponding to the data caching document; and (4) transferring the data caching document by Linux. In an OMAP (Open Multimedia Application Platform Processor), a DSP (Digital Signal Processor) core directly stores the data to the physical unit corresponding to the data caching document and directly saves the collected data to be a document mode, so that the data are prevented from being duplicated between a drive program and an application program; and establishment, initialization and transferring of the data caching document are completed by the Linux, so that the document management advantage of the Linux is played. By combining the OMAP and the Linux, the data storage speed is increased.

Description

technical field [0001] The invention relates to a data storage method, in particular to a method for realizing fast data storage under Linux. Background technique [0002] With the development of multi-core processor technology, more and more processors with different functions are integrated on one chip. The OMAP processor combines the DSP core and the ARM core, giving full play to the advantages of dual cores and greatly improving the performance of the processor. [0003] At the same time, with the continuous development of embedded operating systems, more and more microprocessors use operating systems to achieve more complex functions. Among them, the Linux operating system has expanded its application field by virtue of its many advantages, and occupies an important position in the field of embedded operating systems. [0004] In order to ensure the stability and security of the operating system, under the Linux operating system, the underlying hardware needs to be ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 梁国龙王逸林王燕裘寒青付进刘保府范展嵇建飞
Owner HARBIN ENG UNIV
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