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18.09.2015
By default, processor affinity is set to automatic and it is advisable to leave it this way.
If you have several instances running on one physical server and you do not want them to share CPUs, use this option to assign specific processors to each instance.
See the ALTER SERVER CONFIGURATION page on MSDN for more information on changing processor affinity. If the application and CPU supports Symmetric Multiprocessing (SMP) or HyperThreading (HT), then Windows will automatically adjust the application's usage of each processor core for the best performance. If you have more then one processor intensive applications running, then you could improve their performance by setting the processor affinity of their processes to run on a different core(s). The affinity changes you make to the current instance of an application or process are only temporary and not set permanently. NOTE: If Set Affinity is grayed out, then it means that the process cannot have the processor affinity set for.
C) For each CPU number you want to run the application on, replace 0 (off) with 1 (on) in the binary number for the CPU numbers. For example, if I wanted to run the application only on CPU 0, then my binary number would be changed to 000000000001. D) Go the website below, and type your binary number from step 1C above into the Binary field. Substitute # in the command for the affinity # with the hex value (ex: 1) from step 1D above. Substitute Full path of application file in the command with the full path of the file within quotes.
Right now I have an asus h61-le-CSM motherboard with EFI; it's a little older with a i3 2120 processor. Windows Command ProcessorI download the and burned the iso image when the consumer preview became available.
This morning I decided to download and burn the iso again to see if it was something with the previous image. In Windows XP, Windows Vista, and Windows 7 applications by default run on all available cores of the processor.
Press Ctrl+Alt+Delete to open Windows Task Manager, and go to the Processes tab and look up for the process name that you want to set the affinity for.
In the Processor Affinity dialog, you will see 32 check box options, only the number of cores in your processors will be available to set affinity to. In a single dual core system you’ll see CPU 0 and CPU 1, from here you can check or uncheck the core you want the application to use. Right click the process (application) whose processor affinity you want to change and choose Set Affinity.
The processor affinity setting lasts as long as an application is open, when you close the application or restart the computer, the affinity returns to the default. Some of the scanning applications tend to slow you down if all run together, but by assigning each to a seperate core (Quad Core machine here) I hardly even notice them running as I have the other two processor cores available for anything else I’m doing.
Thank you so much Bruce brown for sharing these links with us, i wrote this post without these calculations so that a beginner user may understand the benefit of setting affinity easily ..
Your math is wrong, if each core (assuming 4 cores) is running 25%, the system is still only running at 25% of total. Im trying to set the affinity for system shock 2 on window 7 but when ever i try i am told that access is denied…anyone have any idea why?
Will allow you to play older games such as the Thief series 1,2 and 3 since they do not like multi-core systems. I thought i would put this out there since i am still looking for more alternatives as well. Note that the affinity parameter is in hexadecimal, in case you’re trying to pin your app to CPUs 2 and 3, use C instead of a number. AddictiveTips is a tech blog focused on helping users find simple solutions to their everyday problems. Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. In finder, go to the install location of the Intel Emulator Accelerator and install IntelHAXM (open the dmg and run the installation).
I had to disable Hyper V technology first through program and features under the control panel to get this to work.
As CommonsWare has correctly pointed out, the emulator is slow because it emulates an ARM CPU, which requires translation to Intel opcodes.


Disable Hyperthreading - Since the emulator doesn't appear to utilize more than one core, hyperthreading actually reduces the amount of overall CPU time the emulator will get.
Make the emulator run on a CPU other than CPU 0 - This has a much smaller impact than turning off HT, but it helps some.
Note: When you change affinity in this way, it's only changed for the lifetime of the process. The CPU percentage doubled when you disabled hyper-threading because you halved the amount of logical processors. Enable GPU Hardware Acceleration (in addition to Intel's HAXM), if you are using API 15 v3 or newer and SDK Tools v17+.
To enable graphics acceleration enabled by default on your emulator: when creating the AVD, in the Hardware section, click New, select GPU emulation and set the value to Yes. Edit Although using the Intel images gets some performance gains, the performance gained by using Genymotion is much greater. With ADT rev 17 the emulator supports running x86 system images in virtualization mode on Windows and Mac OS X. Just wanted to say that after I installed the Intel HAXM accelerator and use the Intel Atom image the emulator seems to run 50 times faster. I noticed that the emulator defaults to only Core 0, where most Windows applications will default to "any" core.
I feel that the best CPUs for it will probably have a high clock (only use clock as a measure for CPUs in the same series btw), handle non-SIMD operations well, and have a turbo boost mechanism. I think it is because clr virtual machine uses cpu directly without code opcode translation. Android platform based on linux and theoretically you can start android on virtual machine in i686 environment. For the last few weeks, Windows Central has been documenting and explaining various tips for Windows 10 meant for novices and those new to Windows. In Windows 10 and under an administrative account you can specify which cores (of your presumably multi-core processor) gets used for explicit apps. Mind you, Windows, and by extension Windows 10, is actually very good at managing your processor cores and allocating resources where it is needed. Your best bet: Proceed with caution and take notes on what you change so you can easily revert if things get wonky.
Do you have specific instances where setting core affinity for specific apps is beneficial?
If you think this guide is helpful, we have many more posts like this in our Windows 10 help, tips, and tricks page. NVIDIA is throwing a little get together this fine Friday evening, and with GeForce on the cards we could well be looking at a new graphics card.
Microsoft has revealed that the upgrade to Windows 10 for Windows 7 and 8.1 PCs will continue to be made available beyond its July 29 deadline for users who need its assistive technologies. DICE and EA have confirmed Battlefield 1, the next game in the first person shooter series.
Choose the PERFSTAT user's Temporary tablespace.Oracle Enterprise ManagerThe Oracle Enterprise Manager is a tool that I've used for years.
The first time you sign in to developerWorks, a profile is created for you, so you need to choose a display name. Keep up with the best and latest technical info to help you tackle your development challenges. If you have a multi-core processor, then this tutorial will show you how to set the processor affinity of an application to control which core(s) of the processor the application will run on. You will not gain much, if anything, from manually changing the processor affinity for these type of applications. Once you close the application or restart your system, the processor affinity of the application will automatically return back to the default of running on all available CPU cores. This step will show you how many CPU cores you have, and how to figure the hex value to use at step 3 below for the CPU(s) you want to run the application on.
This will convert the binary number to a hexadecimal (hex) that you will need to use at step 3 below. I checked task manager, but the feature seems to no longer be in there as it is in previous versions of Windows.
If you have a dual or quad core processor, then you can set affinity to an application to control which core of the processor an application can use, in this way you can assign one application or a program to use only one processor while other application can run on other processor. If you don’t know which process is associated with which application, go to the Applications tab and right-click on the application name and select Go To Process.


A lot of this kind of software is unaware of multiple core processors so they make good candidates to use this technique. I could not play Thief Deadly Shadows since my system locked up when i alt-tabbed out to select affinity manually. We review the best desktop, mobile and web apps and services out there, in addition to useful tips and guides for Windows, Mac, Linux, Android, iOS and Windows Phone.
For some devices, like the Motorola Droid and the Nexus One, the app runs faster in the actual device than the emulator.
I've been toying with its parameters but haven't found a configuration that shows a noticeable improvement yet. You can find the location by placing your mouse over the Emulator Accelerator entry in the SDK Manager.
When I have HT it shows about 25%, without it shows about 50%, but in fact in computes what it has to compute in the same time. The additional (big!) bonus is that Google Play and Google Play Services come packaged with the virtual machines. Also, if you put it on another core (like the last core), it may make the emulator go crazy.
I would recommend 3 gigs of RAM at least because I used a system with 2 gigs of RAM, and it slowed down because the system ran out of RAM and started to use the page file.
There aren't many Java-based benchmarks, but overall look for application benchmarks like compression and office. The problem is not so much on the byte code between ARM and x86 but the software rendering performed by QEMU.
In this regard, it is only for the power user as most consumer-level users either won't reap the benefits or may even make things worse. If you are working in an Oracle environment, this is a must-use system.Back to topSummaryIn this article, we introduced the concepts of performance tuning as it relates to Oracle. Your display name must be unique in the developerWorks community and should not be your email address for privacy reasons. The Simpsons Hit & Run) it loads veeeery slow and I have to always manually set the affinity to two CPU's instead of four and then program runs faster, especially the load time, it loads waaay quicker. Although you cannot set priority to system services but you can set affinity to applications like Google Chrome, Firefox or any Anti-Virus, in this way you can achieve a good overall performance. Since moving to Windows 7 it is quite smooth on dual processor but not as smooth as it was on one processor on XP, however I cant try on Win 7 As I get access denied. In most cases I prefer a slower emulator, because it stimulates you to improve your app, but sometimes you just want to see it work like it does in a real device. Note that you have to restart Eclipse for the AVD Manager to pick up the Intel Atom (x86) CPU option. If you can, you can try putting your heavy-CPU usage applications on the other CPU cores for a boost in speed. They bypass the rendering of QEMU and send the rendering directly to an X server I believe.
Once again, this is a carry-over from previous iterations of Windows so it is not new, but like 'God Mode' many people may not know about it or have simply forgotten the feature. The longer explanation is assigning specific cores to an app can, in some cases, improve overall system effectiveness.
Ken holds a Bachelor of Science in Computer and Information Science, as well as a Master of Science in Technology Management from the University of Maryland University College. In my case with 12 CPU cores, the far right 0 in the binary number will be for CPU 0, and the far left 0 will be for CPU 11. Also, I think you have to properly shut down your emulator device (hold the power button, then select Power off) to avoid having errors when you start it the next time (I could just close the ARM emulator, but with the Intel emulator, just closing seems to create problems). For instance, if you are doing some heavy rendering, compiling, or video work, this ensures that part of the processor is always dedicated to the task. With 1GB RAM, emulator failed to start (with GPU) but with 512MB RAM it ran smoothly and booted really quickly (again with GPU).
Through the years, he has worked for both large and small organizations and has held diverse positions from CIO to Senior AIX Engineer.
Ken is a PMI certified Project Management Professional (PMP) and an IBM Certified Advanced Technical Expert (CATE, IBM System p5 2006).



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