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 Benchmarking Platform
Phoromatic Test Orchestration

USB Attached SCSI (UAS) Is Now Working Under Linux

Linux Kernel

Published on 17 June 2014 05:18 AM EDT
Written by Michael Larabel in Linux Kernel
4 Comments

With the recently released Linux 3.15 kernel is support for UAS. USB Attached SCSI will allow for significantly faster performance out of UAS-supported USB drive enclosures.

Hans de Goede of Red Hat has been one of the developers who got the UAS driver support into shape for Linux 3.15. USB Attached SCSI is a protocol for USB HDDs / SSDs / flash drives that use the SCSI command set and generally allow for much faster transfer speeds than traditional USB mass storage drives. UAS was introduced with the USB 3.0 specification, but not all USB 3.0 rated drive enclosures, etc currently on the market have UAS support.

With the Linux 3.15 kernel the UAS driver should be in good shape along with XHCI streams support. I don't have any UAS drive enclosures right now for being able to benchmark the performance and support under Linux, but when I get my hands on such hardware, there will be USB Attached SCSI Linux tests on Phoronix.

With Linux 3.15 is also USB 3.0 bulk streams support from user-space using USBFS. With the upcoming QEMU 2.1 release, the USB 3 bulk streams support will be taken advantage of with its USB 3 redirection support to offer full USB 3.0 compatibility.

More details on these recent Linux USB support improvements can be found via Hans de Goede's blog.

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 News
  1. GNU Octave 4.0 Released, Includes A GUI & OpenGL
  2. The Latest AMD APU Linux System Being Added To The Farm
  3. Linux Benchmarks Of Intel's Atom Z3735F On The Compute Stick
  4. Fedora's Security Team Continues Closing Old Vulnerabilities
  5. HAMMER2 File-System Now Uses LZ4 Compression By Default
  6. HiSense Chromebook Benchmarks When Running Ubuntu Linux
  7. Mandriva Linux Was Allegedly Brought Down By Employee Lawsuits
  8. GNOME 3.17.2 Is Released As The Latest Look Towards GNOME 3.18
  9. Phoronix Turns 11 Years Old Next Week: How Should We Celebrate?
  10. Ubuntu Community Council Reaffirms Its Decision Against Kubuntu's Leader
Latest Articles & Reviews
  1. Radeon OpenGL Benchmarks On Fedora 22
  2. Btrfs RAID 0/1/5/6/10 Five-Disk Benchmarks On Linux 4.1
  3. Opening The Gates To Our Daily Open-Source Linux Benchmark Results
  4. The Latest Features For Linux Performance Management + Benchmark Monitoring
Most Viewed News This Week
  1. NVIDIA's Proprietary Driver Is Moving Closer With Kernel Mode-Setting
  2. Features Added To Mesa 10.6 For Open-Source GPU Drivers
  3. Friction Building Around An Ubuntu Community Council Decision
  4. Ubuntu's LXD vs. KVM For The Linux Cloud
  5. The Latest Linux Kernel Git Code Fixes The EXT4 RAID0 Corruption Problem
  6. Russia's Baikal Chips End Up Going For A MIPS CPU
  7. The CompuLab Fitlet Is A Neat Little Linux PC With AMD SoC
  8. Linux 4.1-rc5 Kernel Released