The CPU (Central Processing Unit) is the part of a computer that performs tasks instructed by the computer programs. Its role is somewhat analogous to that of the human brain; it performs simple mathematical, logical, and in/out operation of the machine.

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Flash higher CPU usage under OS X than Ubuntu?

I recently installed Ubuntu 13.10 on a 2011 late Macbook pro. With the same version chrome and pepper flash plugin and flashblock extension to block irrevalent flash. When I watch some flash video ...
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Excessive CPU usage from sysmond

Does anyone know what the sysmond application does on OS X? Lately it has been taking about 25-30% cpu constantly for no apparent reason. Things I've tried so far: Reboot SMC reset PRAM reset ...
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CPU at 100%, but no processes showing significant usage

Situation: All 4 cores maxed out. Mac noticeably lagging. Attempted Solution: (Reveals wildly contradictory information.) Closed all applications Opened Activity Monitor Totaled all Process ID ...
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Dashboard or iCal hang with 100% CPU usage

Running on Mac OS X 10.7.4, issues list this seem to be riddled in Google searches but nothing like my issue, which persists even when I take all the steps. My story... Brought up Dashboard today ...
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How does Parallels' CPU and ram usage work? When to shutdown virtual machine?

I run Windows 7 using Parallels in host operating system OSX. I have it configured to use 2GM ram and 2 cores on a Retina MacBook Pro with 8GB ram. I'm curious under what conditions I will experience ...
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Figure out which app is using Java

If I check my activity monitor there is an instance of java that is constantly taking 5% CPU or more. I know that there is some app that are using java on my system and therefore my question is: Is ...
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Why is Mail.app using so much CPU with gmail and Exchange?

My Mail.app is configured for Gmail and Exchange. For some time now the program has been running out of control. It's pretty much constantly burning 100% of CPU (but only 100%). It's got an ...
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crashing MBP :(

I have a MBP from 2010 with 2.4 Ghz Intel Core 2 Duo and 4 GB of RAM. Lately I am getting many kernel panics when my MBP is under high load, such as when copying, playing video's, editing etc. ...
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How to diagnose/fix error when booting a G5

I have an Apple G5 and it won boot anymore. When I boot my fan starts to spin like a madman and the screen stays grey. When I try to boot in Safe Mode using Shift-Command-V, I get the error message: ...
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How to make MacOS X ignore nice load when scaling CPU frequencies (“ignore_nice_load” on Linux)?

Is it possible to control/configure the CPU frequency governor on MacOS X? I would like it to ignore load/work from "niced" processes and not spin up the CPU frequency? On Linux this can be ...
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com.apple.dock.extra - maxing CPU

I've recently installed Mountain Lion and the com.apple.dock.extra process is suddenly constantly active - and is maxing my CPU usage. Activity monitor is showing usage running from as low as 45% to ...
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Emulating lower speed CPUs on Mac mini

I would like to ask whether it is possible to develop OS X application (especially for Lion) on a Mac mini, being able to test how the performance would be on a lower speed CPU. For example: ...
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How to group cpu cores in Activity Monitor (Mavericks 10.9.2)?

I've got MacBook Pro with 4 cores and Hyper-Threading(HT). I've also got a MacBook Air with two cores and HT. On both devices I've set Activity Monitor to show CPU History (View -> Dock Icon -> Show ...
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Macbook Retina 2013 CPU difference

According to Wikipedia, these are the CPU alternatives for the new MBPr 13". 2.4 GHz (i5-4258U) dual-core Intel Core i5 Crystalwell processor with 3 MB shared L3 cache (13") 2.6 GHz (i5-4288U) ...
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Any patch to manually throttle CPU in OS X 10.8?

I'm running a water-damaged Late 2011 Macbook Air. After letting it dry and changing the battery (which died), the computer is still really slow and after doing some investigation, and applying a fix ...