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

Btrfs Battles EXT4 With The Linux 2.6.33 Kernel

Michael Larabel

Published on 21 January 2010
Written by Michael Larabel
Page 5 of 5 - 29 Comments

The Phoronix Test Suite is also capable of monitoring the CPU usage, Iowait, and other system sensors and metrics while the testing is taking place. To look at the impact particularly when using zlib compression with Btrfs due to the additional CPU overhead we used the Phoronix Test Suite's system monitor module as we ran Dbench with 128 clients, IOzone 2GB reads, and then PostMark. Below are the Phoronix Test Suite's recordings of the CPU usage during these three benchmarks.

To no surprise Btrfs with compression enabled had the highest CPU usage with the dual-core Intel Atom 330 being 13% more utilized than with Btrfs and no zlib compression. To some surprise though, when comparing EXT4 and Btrfs, Btrfs had a slightly lower CPU utilization rate than the evolutionary EXT4.

On average Btrfs with transparent compression enabled led to the lowest iowait and it also peaked much lower than EXT4 and Btrfs.

With these new file-system benchmarks against the latest Linux 2.6.33 kernel, Btrfs did remarkably well and continued to have more wins than even with the recent Linux 2.6.32 kernel. Btrfs pulled its wins with Dbench, FS-Mark, and the Threaded I/O Tester. Btrfs lost to EXT4 with PostgreSQL, Iozone write performance, Iozone read performance too except when compression was enabled, and PostMark except when using the file-system's transparent compression. Using the transparent zlib compression was of advantage in many of the benchmarks, but with only modestly taxing the CPU (+13% for an Intel Atom). We will be looking closer at the Btrfs zlib compression performance in a forthcoming article when we look in detail at what it has to offer for netbook users. There is also the Btrfs SSD mode for greater tuning.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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. New Group Calls For Boycotting Systemd
  2. The Features To Find With The Imminent Release Of LLVM/Clang 3.5
  3. Borderlands 2 Is Coming To Linux
  4. The Witcher 2 Ups The Performance More & Works Around Catalyst Bug
  5. Running Gallium3D's LLVMpipe On The Eight-Core 5GHz CPU
  6. Trying Intel OpenCL On Linux For Video Encoding
  7. GSoC 2014 Yielded Some Improvements For Mesa/X.Org This Year
  8. webOS Lives On As LuneOS With New Release
  9. Marek Lands Radeon Gallium3D HyperZ Improvements
  10. Mozilla Firefox 32 Surfaces With HTML5, Developer Changes
Latest Forum Discussions
  1. Lennart Poettering Talks Up His New Linux Vision That Involves Btrfs
  2. nv and xorg.conf under Debian PPC
  3. AMD graphics doesn't work with AMD Catalyst drivers
  4. Best Radeon for a Power Mac G5?
  5. The dangers of Linux kernel development
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. SSD seems slow