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I've noticed several times on Windows 8, and now on OSX 10.7 too, that the copy.com app (a dropbox clone) sometimes starts using a lot of CPU, usually over 100%.

This happens suddenly for no apparent reason, i.e. doesn't happen right after I put some files in his folder.

Is this a known behaviour with a convincing explaination?

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What exactly does this program do. How exactly does OSX run a Windows extension? –  Ramhound Dec 6 '13 at 20:50
    
It doesn't. It's called exactly copy.com, and it's basically a dropbox clone. –  Lohoris Dec 7 '13 at 8:10

1 Answer 1

The way the program tells if it needs to upload a file or not is by hashing the file and comparing it to the file hash that is on the server. I have never used copy.com but in dropbox it calls this process "indexing", that is the likely activity the program is doing when using 100% CPU.

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But as I said, it did it spontaneously, not after I put some new file in the folder. –  Lohoris Dec 8 '13 at 15:39

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