[Q][Resolved]1 core / 2 core...? - Atrix 4G Q&A, Help & Troubleshooting

I am currently running the latest stable cm7 (Ba2tF), I found a program (quadrant) that gives me statistics about my phone.
What concerns me is it says I have 1 core. Is this the phone not utilizing resources? If so, is there a known method to force it to use it? Or is it possible the app doesn't register the second core for some reason?
Or is this something I messed up by being a relative n00b??
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jeranon said:
I am currently running the latest stable cm7 (Ba2tF), I found a program (quadrant) that gives me statistics about my phone.
What concerns me is it says I have 1 core. Is this the phone not utilizing resources? If so, is there a known method to force it to use it? Or is it possible the app doesn't register the second core for some reason?
Or is this something I messed up by being a relative n00b??View attachment 772122
Sent from my MB860 using xda premium
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Click to collapse
quadrant does not work well with dual core devices. use apps like cf-bench or antutu

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Cheers! I'll check them out.
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Okay, let me make this clear, because it's not written in any FAQs I've seen, and it took me a while to work out: Android (at least on Tegra 2 devices) DISABLES CPU cores when they are not needed. Garbarge collection has been moved exclusively to core 0 so that core 1 can remain idle for extended periods and be disabled when not needed. Owing to the fact that looking up system information is not a particularly strenuous, multi-threaded task you will almost NEVER see the second core listed unless you've only just come from another task which was using loads of power and it hasn't yet got round to 'un-latching' the second core.
Look in your system log, you'll see it's full of messages about Core 1 being attatched/detatched.
My only issue is not understanding this behaviour but why the decision to implement it was made. I'm fairly certain it must have overheads and I'm also pretty sure NVidia stated that the CPU cores in Tegra 2 are not individually power gated - i.e. there should be no power saving benefit to doing this...?

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Azurael said:
Okay, let me make this clear, because it's not written in any FAQs I've seen, and it took me a while to work out: Android (at least on Tegra 2 devices) DISABLES CPU cores when they are not needed. Garbarge collection has been moved exclusively to core 0 so that core 1 can remain idle for extended periods and be disabled when not needed. Owing to the fact that looking up system information is not a particularly strenuous, multi-threaded task you will almost NEVER see the second core listed unless you've only just come from another task which was using loads of power and it hasn't yet got round to 'un-latching' the second core.
Look in your system log, you'll see it's full of messages about Core 1 being attatched/detatched.
My only issue is not understanding this behaviour but why the decision to implement it was made. I'm fairly certain it must have overheads and I'm also pretty sure NVidia stated that the CPU cores in Tegra 2 are not individually power gated - i.e. there should be no power saving benefit to doing this...?
Click to expand...
Click to collapse
I reckon not having a second core running at 300-800mhz just to use the calculator/calendar would massively outweigh the "overheads" involved in enabling/disabling the 2nd core. I'm not sure about the individual power gates though