The 2019 Laptop Performance Cost To Linux Full-Disk Encryption
Written by Michael Larabel in Software on 14 March 2019. Page 2 of 3. 34 Comments

The synthetic FS-Mark benchmarks show the rather sizable hit to the performance when using full disk encryption, albeit this is rather an extreme case and not the impact users would normally see.

The CPU usage doesn't end up being all that different on modern Intel CPUs with AES-NI when using LUKS encryption.

The battery power usage is up ever so slightly higher with the additional work of having to encrypt the data.

CompileBench as another synthetic storage test shows a rather sizable hit to performance albeit synthetic.

Under Compile Bench, using encrypted storage did drive up the CPU usage higher than without.

But the battery power consumption rate was about the same.

During the actual compilation part of CompileBench that is less I/O heavy, the cost of disk encryption is obviously much less.

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