Thread: eMMC & micro SD flash card
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Alex Atkin UK is offline Alex Atkin UK
2010-10-12 , 20:12
Posts: 716 | Thanked: 303 times | Joined on Sep 2009 @ Sheffield, UK
#10
Originally Posted by maxximuscool View Post
Actually, I didn't finished the eMMC defragmentation, I got up to 76% and gave up on it then I formating the drive instead and it makes the drive accessible much smoother than previously. I got less lag when opening files and folders. It was struggling and laggy to read from the drive.

I think I have wasted around 2000 write operations to the life span of my eMMC. Luckily it didn't finished so that wasn't so bad.
Flash memory by its nature fragments BELOW the filesystem layer, its how it makes sure no one part is worn out greater than another. As such any slowdown is unlikely to be caused by fragmentation.

Bottom line, you should NEVER defrag flash memory EVER! You are just randomly moving the data around not actually de-fragmenting, because while the OS will show as less fragmented it has no bearing on physically where in the flash the data really is. The filesystem is just a visual representation of how the OS sees the data layout, not how its REALLY laid out in the flash itself.
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Last edited by Alex Atkin UK; 2010-10-12 at 20:15.
 

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