SSD performance before and after encryption
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Guys, it's a well-known fact that encryption on SSD reduces its performance greatly:
a standard SATA SSD for example:
before - Seq 484/376 MB/s, 4K - 30/46 MB/s, 4K-64Thrd 466/227 MB/s, access 0,200 ms
after - Seq 204/192 MB/s, 4K - 14/24 MB/s, 4K-64Thrd 28/31 MB/s, access 0,490 ms
Question is (and I haven't found such reasearch anywhere): Has anyone tried and would it improve the speed if - instead of encrypting the whole SSD with OS, create a partition let's say of half of the size of SSD, and encrypt only that system partition leaving half of SSD space unused.