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macrumors member
Original poster
Sep 6, 2002
I have a simple question: today - when starting up my 2009 macbook unibody with lion I saw that there was immediately a large download occurring over my wireless connection. I clicked open iStat to see this process - "ARM" - chewing up about 41% of my 2.4 Core duo processor. Activity monitor has no record of the ARM process and a simple google search takes me to the usual pages about an Apple ARM architecture chip as a potential macbook air successor cpu.

Can anyone enlighten me to the nature and purpose of this process on my macbook?

Thank you.


macrumors 6502
Mar 16, 2007
In activity manager, does your idle CPU percentage match up with "ARM" process? If so, it could just be a placeholder for istat's idle cpu percentage, but that's my best guess, since I really haven't used istat in years.


macrumors newbie
Feb 15, 2016
It's Adobe process: Adobe Reader Updater. After it's killed then ARM disapear from iStats ;-)
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