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

PowerMizer Is Not Likely The Problem In 256.xx Issue

NVIDIA

Published on 28 May 2010 10:05 AM EDT
Written by Michael Larabel in NVIDIA
14 Comments

One of the articles published on Phoronix this week was NVIDIA's 256.25 Beta Linux Driver Slows Things Down? With NVIDIA's first 256.xx Linux beta driver we encountered significant performance drops from a ZaReason notebook with a NVIDIA GeForce GTS 250M graphics processor. Some thought that PowerMizer was to blame, but this does not appear to be the case.

Since running that article we've received a few emails and forum posts from many not encountering any performance shortcomings with this NVIDIA Linux beta drivers, a few who are affected, and some blaming this problem on PowerMizer -- NVIDIA's technology for dynamically adjusting the GPU's clock frequencies based upon load and other power savings techniques. We're still going to be conducting more tests on other GPUs, but right now it doesn't appear that PowerMizer is to blame for this problem.

With the Phoronix Test Suite we monitored various system sensors (including the NVIDIA GT215 core clock frequency and power consumption) while running tests. As you can see from the graph below, there ended up being no change in the GPU clock frequency between the two drivers when running OpenArena.

PowerMizer Is Not Likely The Problem In 256.xx Issue


We also re-ran the test when the Intel Core i7 notebook was running off its battery (the earlier tests were run on AC power).

PowerMizer Is Not Likely The Problem In 256.xx Issue


The clock frequencies were also the same and there was no significant difference in the power consumption when the GPU was active between the NVIDIA 195.36.15 and 256.25 Beta drivers.

PowerMizer Is Not Likely The Problem In 256.xx Issue


The investigation continues.

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. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  2. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  3. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
  4. Is The Open-Source NVIDIA Driver Fast Enough For Steam On Linux Gaming?
Latest Linux News
  1. Expensive "Free/Libre Software Laptop" Uses A NVIDIA GPU
  2. QEMU 2.2-rc3 Released, Final Release Pushed Back By Couple Days
  3. 64-bit ARM FreeBSD Support Is Taking Shape
  4. GCW Zero Starts Seeing New Game Releases
  5. Intel's Cherry Trail Delayed To Next Year
  6. Bq Introduces More Android Devices, But Still No Ubuntu Phones
  7. Qt 5.4 Release Candidate Expected Later This Week
  8. ArrayFire Accelerated Compute Library Open-Sourced
  9. Amazon's Fire TV Stick: A Nice, Affordable Media Center Option
  10. Google Puts Chrome NPAPI Support On Final Countdown
Latest Forum Discussions
  1. Hurrican SDL Port
  2. Roadmap to Catalyst 14.10 ?
  3. how to configure module phoromatic ?
  4. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  5. Debian Developer Resigns From The Systemd Maintainership Team
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. Cant get working Kaveri APU - A10-7850k
  8. Script for Fan Speed Control