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

Linux I/O Scheduler Comparison On The Linux 3.4 Desktop

Michael Larabel

Published on 11 May 2012
Written by Michael Larabel
Page 1 of 4 - 28 Comments

At the request of Phoronix readers, and that the default I/O scheduler may change, here's a comparison of the CFQ, Deadline, and Noop schedulers on three systems and covering both rotating media (HDD) and solid-state storage (SSDs).

The hardware used for the comparison was an Intel Core 2 Duo T9300 laptop with a 100GB Hitachi HTS72201 SATA HDD, an Intel Core i5 2520M Sandy Bridge system with a 160GB Intel SSD, and an Intel Core i7 720QM Clarksfield notebook also with an Intel 160GB X-25 SSD. This article is primarily about publishing Linux desktop scheduler results while, hardware permitting, in another article will be workstation/server scheduler results.

All three systems were running Ubuntu 12.04 (x86_64) and formatted to EXT4 while the Linux kernel was upgraded to a Linux 3.4 kernel development snapshot.

CFQ, the Completely Fair Queuing scheduler, is the default scheduler for the mainline Linux kernel is what most distributions honor as the default.

The Noop scheduler is the simplest scheduler and based upon a FIFO model.

The Deadline scheduler attempts to guarantee the service start time of I/O requests.

The possible change coming up would be to move the default from CFQ to Deadline for modern, speedy solid-state drives (e.g. PCI Express-based SSDs).

A variety of disk centric workloads were run via the Phoronix Test Suite to gauge the three systems' performance with the CFQ / Deadline / Noop schedulers on Linux 3.4.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. The MSI X99S SLI PLUS Is Working & Running Well On Linux
  2. NVIDIA GeForce GTX 980: The Best GPU For Linux Gamers
  3. ROCCAT LUA: A Linux-Friendly Gaming Mouse
  4. Cheetah Mounts: The Affordable Way To Put Your TV On The Wall
Latest Linux Articles
  1. Preview: Radeon Gallium3D Performance For CS:GO On Linux
  2. XWayland Linux Gaming Performance With GNOME Wayland On Fedora 21
  3. EXT4/Btrfs/XFS/F2FS Benchmarks On Linux 3.17
  4. Fedora 21 Alpha First Impressions: It's Great
Latest Linux News
  1. VA-API Gallium3D State Tracker Added Back To Mesa
  2. Radeon DRM Gets New Information Ioctl Queries
  3. Mir 0.8 Works On Less ABI Breakage, Touchspots, Responsiveness
  4. CS:GO For Linux Gains Better Stability, Community Server Support
  5. NVIDIA Issues Updated 340.46 Long-Lived Driver Release
  6. KDE Plasma 5.1 Now In Beta
  7. Systemd & Debian Were Most Popular In September
  8. Microsoft Announces... Windows 10 With A Start Menu
  9. Borderlands 2 Launches On Steam For Linux
  10. Debian Jessie Might Get Rid Of The kFreeBSD Port
Latest Forum Discussions
  1. Take the Steam Survey results with a grain of salt. It is flawed.
  2. X.Org Is Looking For Some Female Help
  3. Hacking Express gate (Asus Splashtop)
  4. Microsoft Announces... Windows 10 With A Start Menu
  5. NVIDIA Alerts Nouveau: They're Starting To Sign/Validate GPU Firmware Images
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. Nero CD/DVD Burning Software On Linux Is Dead
  8. New Group Calls For Boycotting Systemd