Being desperate we decided to seek support from the Internet and posted our findings to the dm-crypt mailing list, but the response we got was not very encouraging:
If the numbers disturb you, then this is from lack of understanding on your side. You are probably unaware that encryption is a heavy-weight operation…
Gripe: I think they’ve made this diagram unnecessarily tangled by deliberately or carelessly placing the components in silly places. If you rearrange the dm_crypt box a bit then the flow is much easier to understand.
Very cool!
I tried the patches for myself, but my performance gains were much more modest (a few MB/s).
Wow
Gripe: I think they’ve made this diagram unnecessarily tangled by deliberately or carelessly placing the components in silly places. If you rearrange the dm_crypt box a bit then the flow is much easier to understand.