Disk Encryption Tests On Fedora 21

Written by Michael Larabel in Storage on 20 January 2015 at 11:00 AM EST. Page 2 of 4. 27 Comments.

With random reads in FIO, the encrypted disk performance was close to 20% slower.

The CPU usage during this test run was about 4% higher when using a fully encrypted disk.

The random write performance with FIO was over 20% lower with the LUKS encrypted LVM while the CPU usage difference was still just a few percent.

The sequential read performance was lower by about 30% for this Ivy Bridge ultrabook/laptop with a fully encrypted disk.

The results were similar for sequential writes.