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Maximizing Dual-Core Potential

post #1 of 8
Thread Starter 
Is there a way to dictate which process runs on which core?
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post #2 of 8
You can do it manually in the Task Manager (CTRL-ALT-DEL). Right click a process and set Affinity to both cores is the default but you can specify one or the other if you wish.

If both are selected the OS will chose the least occupied core at the moment of the request in case of a single threaded app.

There are softwares that automate this by setting a preference for specific applications.

Also some applications can't be changed with the task manager if the dev specified it. Like World of Warcraft for example. Then you have to use a 3rd party application to do it.
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post #3 of 8
Thread Starter 
If a process switches cores while running, does it create any slowdown?
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post #4 of 8
Quote:
Originally Posted by LembasBread View Post
If a process switches cores while running, does it create any slowdown?
It's a CPU, not a car motor, it doesn't have to Rev up and get in gear.
post #5 of 8
Quote:
Originally Posted by LembasBread View Post
If a process switches cores while running, does it create any slowdown?
That's not how it works. A single, single threaded process can only use single core, but it's still spread over the other cores.

Here is a typical siuation: 1 single threaded process using all it can on a dual core setup. 20% of the first core will be used and 30% of the second core will be used. The load values for each core will be constantly shifting around, but it never uses only one core and never goes over 50% total.

There is picking one or the other unless you force it manually, which will give absolutely no benefit unless you have OCD and it makes you happy
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post #6 of 8
Actually when you have a CPu intensive single threaded app setting it to a single core and putting it to Real Time Priority is a weeee bit faster. And the system stay responsive even with it in real time priority.
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post #7 of 8
Quote:
Originally Posted by Cyant View Post
Actually when you have a CPu intensive single threaded app setting it to a single core and putting it to Real Time Priority is a weeee bit faster. And the system stay responsive even with it in real time priority.
You tried?
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post #8 of 8
Yes it work but don't expect mind blowing increases...
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