1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

The Performance Impact Of Linux Disk Encryption On Ubuntu 14.04 LTS

Michael Larabel

Published on 10 March 2014
Written by Michael Larabel
Page 1 of 5 - 30 Comments

For any Linux laptop users or those concerned about their data's safety on production systems, I highly recommend utilizing disk encryption for safeguarding the data. However, what's the performance impact like these days? In this article with the current development snapshot of Ubuntu 14.04 LTS on a modern Intel ultrabook we're looking at the impact (including CPU utilization) of using an eCryptfs-based home directory encryption and LUKS-based full-disk encryption on Ubuntu Linux.

There have been many Phoronix articles over the years looking at disk encryption performance on Linux. With time the cost of using disk encryption has lowered with modern CPUs and encryption implementations supporting AES-NI plus modern systems being faster so the overhead of encrypting the disk is lessened. For our first disk encryption tests of Ubuntu 14.04, which is an important release given that it is a Long-Term Support release and will end up on enterprise systems where encryption is often mandated, we're looking at the disk encryption costs from an Intel ultrabook.

The ultrabook used for this testing was an ASUS Zenbook Prime UX32VDA. This 2013 ASUS Zenbook model features an Intel Core i7 3517U (Ivy Bridge) processor with 4GB of RAM and dual 128GB SanDisk SSDs, but for this article only one of the solid-state drives was used. On the Ubuntu side was a clean 14.04 daily snapshot install using the Linux 3.13.0-16-generic x86_64 kernel.

Besides testing the Ubuntu 14.04 LTS install with its stock install options (no disk encryption), we also tested it with the full disk-encryption method using LUKS on LVM. On modern versions of Ubuntu Linux the option to do the full-disk encryption using LUKS on LVM is provided from the standard Ubiquity LiveCD-based installer and you no longer have to use any alternate CD for having easy access to this option.

The other option that was tested following another clean install on the Zenbook ultrabook was the eCryptfs-based home directory encryption. With this option eCryptfs is used to encrypt the home directory but only the home directory and not the rest of the file-system or temporary storage area. In general, I personally always go for full-disk encryption regardless of the associated performance penalties.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. AMD Launches New FX CPUs, Cuts Prices On Existing Processors
  2. Preview: AMD's FX-9590 Eight-Core At Up To 5.0GHz On Linux
  3. Intel Launches The Core i7 5960X, Mighty Powerful Haswell-E CPUs
  4. AMD Radeon R9 290: Gallium3D vs. Catalyst Drivers
Latest Linux Articles
  1. Ondemand vs. Performance CPU Governing For AMD FX CPUs On Linux 3.17
  2. How Intel Graphics On Linux Compare To Open-Source AMD/NVIDIA Drivers
  3. The Fastest NVIDIA GPUs For Open-Source Nouveau With Steam Linux Gaming
  4. Testing For The Latest Linux Kernel Power Regression
Latest Linux News
  1. webOS Lives On As LuneOS With New Release
  2. Marek Lands Radeon Gallium3D HyperZ Improvements
  3. Mozilla Firefox 32 Surfaces With HTML5, Developer Changes
  4. Nouveau X.Org Driver Released With DRI3+Present, Maxwell, GLAMOR
  5. Microsoft & AMD Release C++ AMP Compiler With Linux Support
  6. AMD, Wine & Valve Dominated August For Linux Users
  7. Linux 3.17-rc3 Kernel Released Back On Schedule
  8. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  9. Mesa 10.3 RC2 Arrives Via Its New Release Manager
  10. Ubuntu 14.10's Lack Of X.Org Server 1.16 Gets Blamed On AMD
Latest Forum Discussions
  1. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  2. AMD graphics doesn't work with AMD Catalyst drivers
  3. Best Radeon for a Power Mac G5?
  4. The dangers of Linux kernel development
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. AMD Releases UVD Video Decode Support For R600 GPUs
  7. SSD seems slow
  8. Is laptop with Intel CPU and AMD dGPU worth buying considering especially AMD Enduro?