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. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  2. Intel 120GB 530 Series SSD Linux Performance
  3. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
  4. AMD's Windows Catalyst Driver Remains Largely Faster Than Linux Drivers
Latest Linux Articles
  1. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
  2. Is The Open-Source NVIDIA Driver Fast Enough For Steam On Linux Gaming?
  3. Linux 3.18 File-System Performance Minimally Changed But Possible Regressions
  4. AMD Radeon Gallium3D Is Catching Up & Sometimes Beating Catalyst On Linux
Latest Linux News
  1. More File-System Tests Of The Linux 3.18 Kernel
  2. Using NVIDIA's NVENC On Linux With FFmpeg
  3. There's Talk Again About An "Open To The Core" Ubuntu Laptop
  4. PowerVR SGX Driver Code Gets Leaked
  5. V2 Of KDBUS Published For Linux Kernel Review
  6. VirtualBox 4.3.20 Arrives, Still No Sign Of VirtualBox 4.4
  7. Scientific Linux 6.6 vs. Scientific Linux 7.0 Benchmarks
  8. Qualcomm Looks To Get Into The ARM Server Business
  9. HHVM 3.4 Adds New Features, Support
  10. More Radeon Driver Changes Queued For Linux 3.19
Latest Forum Discussions
  1. Debian Developer Resigns From The Systemd Maintainership Team
  2. Cant get working Kaveri APU - A10-7850k
  3. Script for Fan Speed Control
  4. Roadmap to Catalyst 14.10 ?
  5. Debian Init System Coupling Vote Results
  6. The Slides Announcing The New "AMDGPU" Kernel Driver
  7. Updated and Optimized Ubuntu Free Graphics Drivers
  8. Ubuntu Developers Still Thinking What To Do About Adobe Flash Support