Speed Up SSD On OSX By Disabling Access-Time

To enable noatime:

1. Open up Applications>Utilities>Terminal.app
2. At command prompt type sudo bash then press Enter.
3. It will ask you to input your user password make sure you have the admin rights.
4. At the bash prompt type vi /etc/rc.local then press Enter.
5. Then you will be in the rc.local editor screen.
6. Press I (in order to start editing)
7. Input the following code or you can basically cut and paste to it from here

#!/bin/sh
mount -vuw -o noatime /

8. Press ESC to stop editing and type :wq then press Enter to exit the editor.
9. Back to the prompt type chmod 775 /etc/rc.local then press Enter
10. Type Exit and press Enter to exit.