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. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. Counter-Strike: Global Offensive NVIDIA/AMD Benchmarks On Linux
  2. Running Fedora 20 On Intel's Core i7 Haswell-E Platform
  3. A Tour Of The New Phoronix Office
  4. 7-Way Linux Desktop Gaming Comparison On Ubuntu 14.10
Latest Linux News
  1. Debian Switches Back To GNOME As Its Default Desktop
  2. Fedora 21 Alpha Finally Sees The Light Of Day
  3. Qt 5.4 Will Support Applications Under A Wayland Compositor
  4. Valve Rolls Out A New Steam Storefront
  5. The Features Coming For Fedora 21
  6. Counter-Strike: Global Offensive Starts Rolling Out To Linux Users
  7. The Gestures Support Of GNOME 3.14
  8. Linux 3.17 Has Basic Support For The Xbox One Controller
  9. openSUSE 13.2 Beta Still Using Btrfs By Default, & KDE Plasma 5 For Testing
  10. GTK+ 3.14 Brings Much Better Wayland Support, Multi-Touch, New Theme
Latest Forum Discussions
  1. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  2. Uselessd: A Stripped Down Version Of Systemd
  3. Wasteland 2 Officially Launched Today, Including For Linux Gamers
  4. State of Nouveau now and in the near future?
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. NVIDIA GTX 770/780 -works ?
  7. New stress testing utility for GPU's
  8. How to get Catalyst 14.4 working on Ubuntu 14.04