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Backblaze/mds CPU spike problem in OS X

I had an annying problem with the fans on my Macbook Pro running constantly. Checking my CPU usage (with the excellent iStats Menus 3) revealed that the ‘mds’ and ‘mdworker’ processes were the culprits, which basically meant that Spotlight was constantly indexing my hard drive.

Knowing that my hard drive probably didn’t need that amount of indexing, I figured something had to be wrong. A little detective work with a terminal command (sudo fs_usage -w -f filesys mdworker | egrep “open” - thanks to this thread on SuperUser), and it turned out that Backblaze was constantly changing some files which Spotlight then figured it had to index, resulting in a Backblaze/Spotlight cat and mouse game.

So - Spotlight Privacy tab to the rescue:

Add /Library/Backblaze to your Spotlight Privacy list, and you should be all set. Immediately after I did this, my CPU usage dropped and my fans stopped running at full speed. Success!

  1. madsb posted this
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