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External storing performance testing method and apparatus

A technology of external storage and storage performance, applied in static memory, instruments, etc., can solve the problems of slow file fragmentation and increase the test time, and achieve the effect of reducing the time spent and the time.

Inactive Publication Date: 2008-12-03
WUXI ZGMICRO ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The disadvantage of the existing method is that the speed of making file fragments is very slow due to the need to write a large number of files to the external memory connected to the mobile device and then delete the files.
In practical applications, for different capacities of external storage and different sizes of file fragments required for testing, the time to make file fragments ranges from several hours to dozens of hours, which will undoubtedly greatly increase the test time

Method used

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  • External storing performance testing method and apparatus
  • External storing performance testing method and apparatus
  • External storing performance testing method and apparatus

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specific example

[0044] Assuming that the size of the file fragments required for testing is 6 clusters, the process of constructing file fragments is:

[0045] 01: Set the size of each virtual file currently to be constructed as 6 clusters, and determine the number of virtual files to be constructed as n.

[0046] 02: Record the cluster index information of each virtual file in FAT.

[0047] Specifically, a cluster index information record is set for each cluster in the FAT.

[0048] image 3 A schematic diagram of the cluster space occupied by virtual files is given, such as image 3 As shown, virtual file 1 occupies clusters 2 to 7, then in the FAT, record the identification of cluster 3 at the position corresponding to cluster 2, to indicate that the next cluster of cluster 2 is cluster 3; at the position corresponding to cluster 3 Record the mark of cluster 4 at the place, to represent that the next cluster of cluster 3 is cluster 4; ...; record the mark of cluster 7 at the position corr...

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Abstract

A method for testing external storage ability includes confirming size of file fragment to be tested, structuring a virtual file not occupying storage space of external storage at each interval of storage space occupied by a file fragment, recording cluster index information of each virtual file in FAT, confirming file to be written into external storage by mobile device, confirming cluster not being occupied as per said cluster index information, writing file data in cluster no being occupied to form file fragment and carrying out storage ability test according to formed file fragment. The test device used for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to an external storage performance testing method and device. Background technique [0002] With the popularization and application of large-capacity external memory such as: secure digital (SD) card, standard flash memory (CF) card, storage memory, flash memory (NandFlash) and other storage devices, many embedded mobile devices provide external memory The control interface enables the user to store the multimedia information files and personal information files on the mobile device to the external memory through the control interface. In the design stage of embedded mobile devices, especially when it involves the external memory control interface, the designer needs to support the file system of the external memory on the mobile device, such as: the file allocation table (FAT) system, and the reading of the external memory itself. Write performance and other performance tests...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C29/48
Inventor 高占东
Owner WUXI ZGMICRO ELECTRONICS CO LTD