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by majewsky
3473 days ago
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To put some numbers on this, `cryptsetup benchmark` on my Linux notebook reports 1329 MiB/s encryption speed and 1346 MiB/s decryption speed for 256-bit AES in XTS mode (which is the default stream cipher for Linux's LUKS disk encryption). And that's on a 2012 Core i3. If a modern CPU has AES-NI, I would never expect disk access speed to be constrained by the disk encryption. (Unless, maybe, if you're copying from one internal disk to the other, or if you're copying across a 10gig ethernet.) |
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