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cheap jewelry wholesale china First, what is disk fragmentation?
The disk fragmentation should be called file fragments because the files are dispersed and saved to different places of the entire disk, rather than continuously stored in the continuous clusters of the disk continuously. Essence
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When the physical memory required for the application is insufficient, the general operating system will generate temporary exchange files in the hard disk, and use the hard disk occupied by this file. Space virtual memory. The virtual memory management program will frequently read and write hard disks, producing a large amount of fragments, which is the main reason for producing hard disk fragments.
It the settings of temporary files or temporary file directory generated when browsing information such as IE browser browsing information will also cause a large amount of fragments in the system. File fragments generally do not cause problems in the system, but too much file fragments will cause the system to find it back and forth when reading the file, causing the system performance to decline, and the hard disk life is severely shortened. In addition, excessive disk fragments may cause loss of storage files.
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. How is disk fragmentation generated?
In the disk partition, the file will be dispersed and saved to different places of the disk, instead of continuously saved in the continuous cluster of the disk. And because in the process of file operation, the Windows system may call virtual memory to synchronize the management program, which will cause each program to read and write frequently on the hard disk, which will produce disk fragments.
. There is another situation that when the content of the middle of the middle is deleted, a small file is written, so that there will be some space on both sides of this file. At this time No part of the file, any part of the two spaces can accommodate the file. At this time, the file needs to be divided into two parts, and the fragments are generated again.
The most common is large files such as downloading movies. During this period, half of everyone will handle other things, and the downloaded movie files are forced to divide into several fragments and store them in the hard disk. So downloading is an important source of fragments. There is also often delete and add files. At this time, if the file space is not large enough, a large number of disk fragments will be generated. As the files are deleted frequently, this situation will become increasingly serious.
although disk fragmentation does not have a great impact on normal work, it will significantly reduce the operating speed of the hard disk. This is mainly because the hard disk read file needs to jump between multiple fragments, which increases the spinning of the waiting disk to the specified designated. The latency of the sector and the time for the magnetic tract to switch the magnetic trail.
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. The principle of reading and writing operation of disk
On the cause of disk fragment Reading and writing action. When running a program, the job of the magnetic head of the disk drive is to search for the necessary files to run the program, then read the data, and finally read it after reading -transmit the data to the disk cache (cache) and memory. The search time is called the average search time in the hard disk performance index. The unit is milliseconds (MS). The current average search time of the mainstream hard disk is less than 9.5ms. If the relevant files of the application can be placed in the continuous space of the disk, the time of the magnetic search will be reduced a lot. The same is true when reading. The time required for the data of the disk to read the sector below the magnetic head is only one -fifth of the time required for the same data to read the same data. When reading the disk, the system first checks whether the data is in a high -speed cache. If there is any, read it directly; if there is no, access the disk, that is, the disk read. When you need to read the same data multiple times, Cache is very effective, but for the first time you read a file, cache is powerless. So the search time and reading time largely affect the efficiency of program execution.
Why do you want to organize the disk Windows system that cannot automatically put each file in the most suitable position on the disk according to the principle of minimizing the magnetic head search time. So Microsoft added "Disk" (disk fragmentation program) in Windows, and provided "" (task monitor) to track disk activities during the startup process to facilitate "DISK" to work more effectively. "" Is automatically run with Windows (of course "" "" "" "" ""e"). When loading an application, it understands the files that searches and calls the program are started by monitoring the access action of the disk, located the required files, and stores the surveillance results in the hidden directory of "C: WindowsApplog". Most of the files in this directory are expanded by ".lgx". Among them, "LG" represents the record file (log file), and "X" represents the disk. The file name of the file is called the file name of the application monitored. When the user performs disk fragmentation, the program moves the relevant files of the application into the continuous space on the disk according to the information in the Applog directory.
Sessing file information only during the program loading process, and the order of adjusting and optimization according to the loading frequency of the program, that is, the most useful software can be obtained. The Applog.ind file in the Applog directory records the number of applications running. Users need to start multiple times for commonly used software, accept monitoring and records, and then use DISK for finishing to truly improve the program startup speed. But if the user changes the common software halfway, such as the commonly used Winzip before, and now uses Zipmagic, then DISK will first move the files related to Winzip to the continuous space, not Zipmagic, unless Zipmagic loading The number exceeds Winzip. To solve this problem, users can delete the "Winzip32.lgx" file. The record files are not existing, and DISK will not optimize it.
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. Should I organize hard disks regularly?
In fact, it should be no doubt that regularly organizing hard disks should be. If the hard disk fragmentation will really damage the hard disk, it will also be after the hard disk is almost sorted out.
The hard disk is used for a long time, and the storage position of the file will become fragmented -the content of the file will be scattered at different positions of the hard disk. The existence of these "fragmented files" will reduce the efficiency of the hard disk, and also increase the possibility of data loss and data damage. The fragmentation procedures collect these fragments together and put them on the hard disk as a continuous overall. Windows comes with such programs: disk fragmentation program (), but there are better procedures in tool software and Nuts
wholesale scarf jewelry memphis For the same hard disk, which partition of the virtual memory is not related to the operating efficiency and life of the hard disk, because there are several partitions on this hard disk, only one magnetic head can be read and write data at any time. (If so), you need to wait. Of course, don't put it in the last partition, because the more you go to the tail of the disk, the slower the read and write.
For the system, if the system partition is large enough, there is no need to move virtual memory. On the disk, virtual memory is an exclusive file with a stable size (usually 1.5 to 2 times the physical memory), but this does not mean that such large files are actually read and wrote frequently (such as 2G size), such as 2G), such as 2G), such as 2G), 2G, 2G size),, 2G size), such as 2G sizes). In fact, even if only hundreds of megar virtual memory is used, its total size is still unchanged, and the fragments will not sort out it, so where to put it on the system, it has no effect on the system.
If there are two hard disks, setting the virtual memory on another hard disk is a better way, because two (serial port) hard disks can be read and write at the same time.
gold jewelry wholesale new york It must be a C drive. When you go online, you can see why the disk stores data. The frequency of work will not be added, and the disk will not affect it.