[vbezhenar]

My Macbook used to grind CPU for 10-20 minutes after every power on. That happened with literally fresh install and it does it every time. I don't know why does it do that. May be some indexing? This lack of transparency was one of the reasons for me switching to Linux too. I don't want my OS to do anything at all in background, that I didn't explicitly configured to. I want to be in full control of my software. Linux is far from perfect, but much better.

[zamfi]

Huh, which process was doing this grinding on your MacBook?

[cguess]

In my experience this is usually Spotlight indexing files/checking previous indexes etc. If you have any backup software running that will do it too.

[vbezhenar]

Generally it's mds_stores, but sometimes there are other ones which I don't remember atm. But mds_stores is the biggest offender.