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

Intel Rewrites TurboStat Plus IVB CPU Idle Support

Intel

Published on 27 July 2012 11:32 AM EDT
Written by Michael Larabel in Intel
1 Comment

Another one of the pulls going into the Linux 3.6 kernel this week is the ACPI and power management updates courtesy of Intel. The two prominent changes for this next Linux kernel release is a rewrite of the "turbostat" tool and the "intel_idle" CPU idle driver now supports Ivy Bridge processors.

Len Brown of Intel had his ACPI and power management update pulled by Linus on Thursday. There's some generic cpuidle driver work, thermal management changes for non-ACPI systems, and an ACPICA core update, but the two key changes for Linux 3.6 are:

- Intel's "turbostat" tool has been re-written. Turbostat is the Intel utility living within the kernel tree for reporting processor frequency and idle statistics for recent Intel Core and Atom processors, namely those supporting Intel Turbo Boost Technology. The turbostat rewrite is primarily for lowering the overhead in order to measure very large systems when they are completely idle.

- The "intel_idle" driver now supports Ivy Bridge processors. This is the CPU idle driver that is optimized for Intel hardware with more specific hardware idle features compared to the generic acpi_idle driver. This may lead to Intel Ivy Bridge power savings when upgrading to the Linux 3.6 kernel.

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. Btrfs On 4 x Intel SSDs In RAID 0/1/5/6/10
  2. AMD Radeon R9 290 On Ubuntu 14.10: RadeonSI Gallium3D vs. Catalyst
  3. MSI X99S SLI PLUS On Linux
  4. NVIDIA GeForce GTX 970 Offers Great Linux Performance
Latest Linux Articles
  1. Windows 8.1 vs. Ubuntu 14.10 With Intel HD Graphics
  2. 6-Way Ubuntu 14.10 Radeon Gallium3D vs. Catalyst Driver Comparison
  3. NVIDIA vs. Nouveau Drivers On Ubuntu 14.10
  4. Ubuntu 14.10 Offers AMD Radeon Driver Performance Improvements
Latest Linux News
  1. GTK+ 3.16's New GtkGLArea Widget Gets Improved
  2. X.Org Server 1.17 ABI Bumped
  3. Fedora 21 Beta To Be Released Next Week
  4. Go 1.4 Beta Release Brings Big Runtime Changes
  5. SIMD For JavaScript Continues Coming Along
  6. GNOME 3.15.1 Released
  7. Red Hat Software Collections 1.2 Adds GCC 4.9, Nginx 1.6
  8. GLAMOR Acceleration Continues To Be Cleaned Up
  9. Russia's Yandex Web Browser Finally Released For Linux
  10. Linux Kernel Finally Being Optimized For SSHDs
Latest Forum Discussions
  1. Closed source to opensource
  2. How to get rid of Linux
  3. Is foolish currently develop in machine code, hexadecimal and assembly?
  4. Reducing The CPU Usage In Mesa To Improve Performance
  5. Help diagnosing problems with a Readon HD 4670 on Mesa 10.3.2-1
  6. Advertisements On Phoronix
  7. nv and xorg.conf under Debian PPC
  8. Looking for a Open-Source AMD experienced Linux mentor