[CentOS] Disk De-Fraging in Linux

Fri Sep 21 10:47:10 UTC 2007
William Warren <hescominsoon at emmanuelcomputerconsulting.com>

IME defragging is highly needed in busy servers that use a lot of disk. 
  Every single one of my clients have seen server performance tank when 
fragmentation goes over 15% or so..including the workstations.  In vista 
it's still necessary.

John R Pierce wrote:
> 
>>> you're in luck cause you don't defrag an ext2/3 partition at all. defrag
>>> is for windows file systems. Ext file systems are a different animal
>>> all-together.
>>>     
>>
>> Why?  What's different between NTFS and ext2/3 that defragging is
>> needed in one but not the other?
>>   
> 
> 
> IMHO, defragging is highly overrated in NTFS too.  it was the old 
> FAT/FAT32 file system that suffered from horrible performance when 
> heavily fragmented.
> 
> 
> 
> that said, the best way to defrag a file system is to dump it to 
> external media, delete then recreate the file system and restore the dump.
> 
> 
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