Hello Friends,
I have been trying to sync my Bitcoin-QT app under Mac OS X Mavericks for days and everything was going soooooooo slow! I kept leaving the Mac on the whole time, even during night, but the syncing process was going extremely slow. My Mac is a recent iMac with 8GB of RAM, 1 TB of HD and I have a fast internet connection.
I finally found the solution and the sync just switched from super slow to super fast and I completed more than 60% of the sync in just one day.
How did I do that? Easy peasy (and I wonder why I did not think about this before).
Mac OS X Mavericks introduces a neat feature, which can be troublesome when you try to sync your Bitcoin app. This feature is called App Nap and it basically slows down any app running in the background (
http://www.apple.com/osx/advanced-technologies/).
You need to turn this feature off for the Bitcoin-QT client. Just right-click on the app's icon, select GET INFO and then check the PREVENT APP NAP feature.
Done, your client will start syncing super fast.
I hope the above is helpful to other fellow Mac users and Bitcoin enthusiasts.