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  • (January 12, 2023, 01:18:11 AM)

Author Topic: Hopefully someone can answer... CPU related question.  (Read 2215 times)

Bradmonk

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Hopefully someone can answer... CPU related question.
« on: October 16, 2009, 12:08:45 PM »
My first post :)

Hi all!

I trust everyone is well.

I was wondering if anyone could tell me what determines workload distribution among multi-core processors.

The reason I ask is that i have been looking at the performance of the two cores and the load percentages are farely erratic, with one core spiking while the other sits relatively still. This is not down to a load balancing problem as when I'm running a few apps at once load is distributed fairly evenly. I'm just curious as to what determines which instructions go where. Does any one core take precidence over certain tasks, or is the workload shared purely on which core has the most recources free? Do the cores work in tandem on instructions, or is one instruction processed on one core independently?

If anyone can provide even a little information on this, I would be very grateful :) I have tried to find information on the net, only to find posts about people having load balance problems.

Thanks in advance :)


Mad Brad

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BizB

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Re: Hopefully someone can answer... CPU related question.
« Reply #1 on: October 16, 2009, 12:16:10 PM »
What's in it for me?
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Demosthenes

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Re: Hopefully someone can answer... CPU related question.
« Reply #2 on: October 16, 2009, 12:39:49 PM »
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Clear_Runway

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Re: Hopefully someone can answer... CPU related question.
« Reply #3 on: October 16, 2009, 01:55:31 PM »
it isnt a problem, dual cores are supposed to do that.
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ivan

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Re: Hopefully someone can answer... CPU related question.
« Reply #4 on: October 16, 2009, 06:35:18 PM »
Here you go. I think the Processor Symmetry paragraph answers your questions. Unfortunately, the answer is... "it depends".
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xolik

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Re: Hopefully someone can answer... CPU related question.
« Reply #5 on: October 16, 2009, 11:55:03 PM »
Quote from: Bradmonk on October 16, 2009, 12:08:45 PM
I was wondering if anyone could tell me what determines workload distribution among multi-core processors.

The unending love of our Lord and Savior Jesus Christ. It says so in the Bible. You'd know that if you actually read it, pagan.  :x
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ivan

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Re: Hopefully someone can answer... CPU related question.
« Reply #6 on: October 17, 2009, 02:36:34 PM »
Quote from: xolik on October 16, 2009, 11:55:03 PM
The unending love of our Lord and Savior Jesus Christ. It says so in the Bible. You'd know that if you actually read it, pagan.  :x

Division of labor and distribution of wealth is more of a Marxist thing.
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Re: Hopefully someone can answer... CPU related question.
« Reply #7 on: October 17, 2009, 04:27:46 PM »
Quote from: ivan on October 17, 2009, 02:36:34 PM
Division of labor and distribution of wealth is more of a Marxist thing.


I'm talking about Supply Side Jesus.
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