SSD + LUKS performance comparison?

Solution 1:

I'm currently seeing 150MB/s performance with my SSD and LUKS. That is a 50% loss since without LUKS my SSD will get 300MB/s read performance.

I'm using Fedora 17 with Linux kernel 3.4.

Solution 2:

Yes the CPU usage of the encryption will go up, however unless the machine is otherwise CPU bound I'd expect IO to still be the bottlenect as most current machines should be able to exceed 250MB/sec of AES (that being the SATA-3g bandwidth)

Solution 3:

AES-NI with SSD tests are in a link below check this: http://dentarg.it64.com/content/luks-and-intel-aes-ni-performance-part-2