Re:Weird Al had 100 gigs of RAM
by bombcar on Tuesday September 06, 2022 @08:26PM
(#32744903)
A hard drive can give you the next block almost instantly.
But a random block may take many many times that as it repositions the head and waits for the block to come spinning by.
And an SSD returns any block almost at the same speed, so defragmenting only increases the amount of wear on the drive (and it internally remaps anyway so you don’t even get what you’re after - block 5 is a logical block that may be currently mapped to 466 not next to block 6).
But a random block may take many many times that as it repositions the head and waits for the block to come spinning by.
And an SSD returns any block almost at the same speed, so defragmenting only increases the amount of wear on the drive (and it internally remaps anyway so you don’t even get what you’re after - block 5 is a logical block that may be currently mapped to 466 not next to block 6).