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

BFS Scheduler Update Brings SMT Nice Support

Linux Kernel

Published on 16 August 2014 08:10 AM EDT
Written by Michael Larabel in Linux Kernel
12 Comments

Con Kolivas released a new version of his BFS scheduler and besides porting it for Linux 3.16 compatibility it also contains a big new feature.

BFS CPU scheduler v0.450 made a Saturday morning premiere and it offers support for Linux 3.16, offers various bug-fixes, and brings configurable SMT nice support.

About the SMT nice support, Con explains, "Enabling Hyperthreading on Intel CPUs decreases the effectiveness of the use of 'nice' levels and different scheduling policies (e.g. realtime) due to sharing of CPU power between hyperthreads. SMT nice support makes each logical CPU aware of what is running on its hyperthread siblings, maintaining appropriate distribution of CPU according to nice levels and scheduling policies at the expense of slightly increased overhead."

Con's SMT nice support for BFS dates to an idea he originally expressed ten years ago.

More details on Brain Fuck Scheduler v0.450 can be found via the mailing list announcement.

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. Acer B286HK: A 28-inch UHD LED 4K Monitor For As Low As $350
  2. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  3. Intel 120GB 530 Series SSD Linux Performance
  4. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
Latest Linux Articles
  1. Mesa Git Yields Performance Improvements For Newer AMD GPUs
  2. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  3. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  4. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
Latest Linux News
  1. Mesa 10.4 Release Candidate 3 Is Here For Weekend Testing
  2. GenodeOS 14.11 Now Supports Intel's Wireless Hardware
  3. Jolla Tablet Could Have Upgrades For MicroSDHC, Split Screen, 3.5G
  4. Intel Has Last Round Of DRM Changes For Linux 3.19, Starts Dropping DRI1/UMS
  5. Fedora 21 Release Candidate 1 Awaits Your Testing
  6. GCC 5 Adds Support For ARM's Cortex-A17
  7. KWayland Server Component Coming For KDE Plasma 5.2
  8. NVIDIA Posts Tegra Gallium3D Patch For K1+ Support
  9. Ubuntu 14.10 MacBook Air Tests With Linux 3.18, Mesa 10.5
  10. AMD Richland APU Support Added To Coreboot
Latest Forum Discussions
  1. Aliens vs predator for Linux
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Hurrican SDL Port
  4. Roadmap to Catalyst 14.10 ?
  5. how to configure module phoromatic ?
  6. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  7. Debian Developer Resigns From The Systemd Maintainership Team
  8. Cant get working Kaveri APU - A10-7850k