Why does my mac take 60-90 seconds to wake up?

Solution 1:

• As soon as it wakes up next time, examine the file /var/log/system.log (open a terminal and type less /var/log/system.log; Or open the Console app and find Files/system.log).
• Scroll to the bottom (the most recent entries) and find the time at which you just woke the machine, scrolling up if necessary. The entries from there to the bottom should give a clue as to what was going on during the wake-up period.

You can also look through previous wake-ups the same way, to look at what was happening during the long delay.

Solution 2:

http://www.imore.com/how-speed-retina-macbook-pro-wake-sleep

What is actually happening is that these new MacBook Pro’s (and recent MacBook Air’s) have a new powersaving mode which Apple calls standby. Standby mode kicks in after the laptop has been in normal sleep mode for about an hour. When that happens, the contents of RAM are written to the hard drive and the RAM is powered down to further extend battery life. In theory, the laptop will last up to 30 days in standby mode. The trade off is that, when waking up, it takes a long time to reload 16 GB of RAM from the hard drive (even with SSD).

Now on wake it needs to reload the contents of memory. During this time you get no cursor in your login field.

You can extend the time before entering standby mode by following this tip:

http://www.ewal.net/2012/09/09/slow-wake-for-macbook-pro-retina/

Solution 3:

Open a Terminal or xterm window, and enter the following command:

grep hibernate /var/log/kernel.log

If this command does display anything, this means that (as suggested Waren) your MacBook Pro entered into hibernate mode. In this case, MacOS X is restarted by

1. copying back into memory /var/vm/sleepimage which does take approximately 20 s / Gbyte of main memory,
2. and then jumping back at the right code location within this recovered memory.

You can also know when your MacBook Pro went through this hibernate mode by issuing:

ls -lT /var/vm/sleepimage

If you want to avoid this slow awakening, just plug your MacBook Pro when you expect to let it sleep a long time (approximately more than 8 hours).