Wednesday, April 23, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Travelling Through Time On Updated Google Maps
OnePlus One To Launch Next Month
LG Display Reports First Quarter Results
Toshiba Announces Canvio AeroMobile Wireless SSD
Global Chip Revenue Rises in 2013
Google Spent $3.82 Million Lobbying In First Quarter
Intel To Release Bay Trail-Entry Chip For Budget Tablets
Toshiba, SanDisk Mass Produce 15nm NAND flash Memory
Active Discussions
help questions structure DVDR
Made video, won't play back easily
Questions durability monitor LCD
Questions fungus CD/DVD Media, Some expert engineer in optical media can help me?
CD, DVD and Blu-ray burning for Android in development
IBM supercharges Power servers with graphics chips
Werner Vogels: four cloud computing trends for 2014
Video editing software.
 Home > News > PC Parts > AMD See...
Last 7 Days News : SU MO TU WE TH FR SA All News

Wednesday, January 11, 2012
AMD Sees Performance Improvements On AMD FX Processors Systems Running Windows 8


In initial testing of the upcoming Windows 8 operating system, AMD claims that it has seen performance improvements of up to 10% in some applications, when compared to Windows 7.

AMD FX processors use a dual-core module architecture codenamed "Bulldozer", which current versions of Windows 7 were not specifically architected to utilize. In essence, for those with an AMD FX-8150 Processor, for example, Windows 7 sees the eight available cores and randomly assigns threads to them.

According to AMD, Windows 8 correctly recognizes the AMD FX processor architecture and cores. Microsoft recently completed back-porting some of the Windows 8 scheduler code for AMD FX processors into a hotfix for Windows 7.

So if you have an AMD FX processor, here's what you can do to update your version of Windows 7:

- Download the scheduler update (KB2645594) and install. This will tell the scheduler that your AMD FX processor contains dual-core modules. In essence, threads 1-4 now get assigned to their own module first.

- Download the core parking scheduler update (KB2646060) and install. This will prevent Windows 7 shutting down unused cores prematurely when there are threads to be assigned (there?s a performance penalty parking and then un-parking a core).

The best possible cases for improvement are applications that use cores in your AMD FX processor. In AMD's testing using the AMD FX-8150 processor, the company found the best improvement in wPrime, Left 4 Dead 2, and Lost Planet.

However, not every application realizes a performance boost. In fact, heavily threaded apps (those designed to use all 8 cores), get little or no uplift from this hotfix ? they are already maxing out the processor. In other cases, the uplift averages out to a 1-2 percent uplift.

OS Patches Increase Multi-threading performances of Opteron 6200 and 4200 systems

AMD's new AMD Opteron 6200 and 4200 Series processors are also on the road to achieving optimal efficiency in 2012 with the recent release by Microsoft and Red Hat of improved scheduling techniques for their operating systems.

Currently, the CPU scheduling techniques used by Windows Server 2008 R2 SP1 are not optimized for the module architecture of the AMD Opteron 6200 and 4200 Series processors. This means that certain multi-threaded workloads will not be optimally distributed between cores, which can result in decreased system performance.

Microsoft has just posted a hotfix for Windows Server 2008 R2 SP1 documented in KB2645595 that enlightens the OS kernel to the AMD Opteron 6200 and 4200 Series topology so that the kernel can do a better job of scheduling threads to the processor cores. This patch leverages work that AMD and Microsoft have done cooperatively for future versions of the Windows kernel, and can be applied as desired by users running Windows Server 2008 R2 SP1. Below you?ll find links to the patches:

http://support.microsoft.com/kb/2646060

http://support.microsoft.com/kb/2645594

The performance gains that can be expected from this patch depends. Workloads that are moderately threaded have the potential for uplift. This could include virtualization, database, or transactional environments that are "bursty" - a mixture of light and heavy transactions, or legacy applications that are by nature not very threaded. The more heavily threaded the application, the less the likely the uplift. We recommend that interested users apply the patch to a test system and see how their workload responds.

Regarding the Linux world, Red Hat Enterprise Linux (RHEL) 6.2 was released on Dec 6, 2011. RHEL 6.2 is another OS that is "enlightened" for the AMD Opteron 6200 and 4200 Series processors. It delivers higher levels of efficiency realized through resource management and performance optimization and enables enhanced business agility through more flexibility for virtualized and clustered environments.


Previous
Next
Plextor Announces M3 Pro Series SSDs at CES        All News        Apple Confirms Anobit Acquisition
Plextor Announces M3 Pro Series SSDs at CES     PC Parts News      Kingston Offers Memory Solutions for Ultrabooks, New Wi-drive And USB Flash Drives at CES

Get RSS feed Easy Print E-Mail this Message

Related News
AMD Updates Its "Never Settle Forever" Program
Console Sales Lift AMD's First Quarter Results
AMD Demonstrates Next-Gen x86 APU Running Fedora Linux
AMD Introduces New Socketed AMD Sempron and AMD Athlon APUs
AMD Launches The Radeon R9 295X2 Graphics Card
AMD Launches New FirePro W9100 Graphics Card
AMD Teases With New "Secret" Briefcase
AMD Amends Wafer Supply Agreement With GLOBALFOUNDRIES
AMD To Release New FirePro W9100 Graphics Card Soon
AMD And Nvidia Strike New Game Partnerships
AMD Gaming Evolved Expands with New Partnerships
AMD Announces New AM1 Platform

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .