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Windows 7: Processors - Limit Number Used by Windows 7

25 Feb 2010   #10
Staple Head

Windows 7
 
 

then i apologize if i misunderstood what you meant. as for my observations they come from running 7 from the first beta through my purchase of 7. the first thing i noticed when i installed the first beta was this lag. i thought it was just a driver issue. so after the install i did my security software, then i did my drivers. this did not fix it. i tried tweak after tweak to fix it, nothing. one day i ran across an article about the cores, so i changed it from 1 to 2. after i rebooted i decided to click on computer just to see if there was any difference, and the lag was gone. i am a skeptic so i could not believe after all the tweaks i had tried to fix the lag that i had just run across the fix by accident. this is when i ran the various test beds i mentioned. i do not know if others are having this lag or not, but i do know what seems to have fixed it for me.


My System SpecsSystem Spec
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25 Feb 2010   #11
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

There is no need to apologize. Misunderstandings happen - especially from postings made by "foreigners" like me who's native language is not English. Sometimes the intended semantics get twisted in the translation.
But back to your observation. I have never encountered this lag - neither on my 32bit Win7 nor on my 64bit Win7. But if the setting worked for you, you might as well apply it. Nothing wrong with that.
My System SpecsSystem Spec
25 Feb 2010   #12
Staple Head

Windows 7
 
 

i have checked forum after forum and searched for this and with the exception of a few no one seems to get it. so i'm thinking that for some reason it is just a odd quark with my hardware setup.
My System SpecsSystem Spec
25 Feb 2010   #13
Night Hawk

W7 Ultimate x64/W10 Pro x64 dual boot main build-remote pc W10 Pro x64 Insider Preview/W7 Pro x64
 
 

Once the new build is together here I will be able to put all of this to the test since I'll be moving from a dual core into a quad core build. It should be interesting to see what the performance monitor and other logs reveal as well as a look at the performance monitor.

As far as speeding things up there was some discussions that taking a single core cpu or dual core model and bumping the number of cores was supposedly resulting in some kind of performance gain there. The idea was put to the test and revealed no notible performance boosts.

That discussion was seen over the last few years on different forums. I tend to agree with Shawn on not seeing any particular gain with that alone. Hope you Digg the guide here just the same!
My System SpecsSystem Spec
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25 Feb 2010   #14
Brink

64-bit Windows 10 Pro
 
 

Quote   Quote: Originally Posted by Staple Head View Post
where do get that all cores are used by default. this is not the case. when you go to msconfig, boot, advance option and it's default setting for cores being used is 1, that is exactly what it is using. changing it 2 or more depending on you cpu makes windows use more cores. various programs you install may or may not use all cores by default, but win 7 does not.
Hello Staple Head,

Was the boxed checked with 1 selected?

By default, when the Number of Processors options is unchecked, the number in the grayed out drop down menu is irrelevant. It is only a relevant option to select how many when the box is checked instead.
When grayed out, all processors or cores are available for use in Windows 7. When you check the box, only the number of cores/processors you select will be available to for use in Windows 7.

Now whether Windows 7 decides to use them, programs are programmed to make use of multiple cores or processors or not, and how the CPU affinity for a process is set is another story completely and will affect how many cores/processors are used as well.
My System SpecsSystem Spec
25 Feb 2010   #15
Staple Head

Windows 7
 
 

brink i go in and check the box and then it to 2.
My System SpecsSystem Spec
25 Feb 2010   #16
Brink

64-bit Windows 10 Pro
 
 

Well, I'm happy to hear that you say you clearly notice a performance gain by checking the box and selecting them all manually instead of having them selected automatically with it being unchecked. I'm just not sure why or what would make a difference like that. That's all.
My System SpecsSystem Spec
25 Feb 2010   #17
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Mysteries surround our life - LOL.
My System SpecsSystem Spec
26 Feb 2010   #18
Staple Head

Windows 7
 
 

Quote   Quote: Originally Posted by Brink View Post
Well, I'm happy to hear that you say you clearly notice a performance gain by checking the box and selecting them all manually instead of having them selected automatically with it being unchecked. I'm just not sure why or what would make a difference like that. That's all.
Quote   Quote: Originally Posted by whs View Post
Mysteries surround our life - LOL.
mystery is right, because when i setup my roommates system i never see the lag on his machine. the thing our systems are more similar than not.
My System SpecsSystem Spec
20 Mar 2010   #19
MadMaxData

Windows 7 Enterprise x64
 
 

This thread should be removed by an Admin. You should NEVER tell inexperienced users to go messing around in the advanced boot options for how the OS handles CPU's. This setting should NEVER be touched unless you know what your doing. It's one of the few places where the OS communicates directly with the BIOS. If you have a dual core, or quad core CPU it should still be set at 1 by default. Only when you actually have two seperate physical processors should it be set to two. And the OS will do that automatically when installed. Unless you have a problem with your BIOS.

Leave this setting alone!
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 Processors - Limit Number Used by Windows 7




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