[cstejerean]

"Mostly, waking the computer from sleep takes a fraction of a second but sometimes it takes ~20 seconds to show the screen."

I've seen this as well, and it feels related to whether the computer is suspended to RAM (sleep) or suspended to disk (hibernate).

[nicpottier]

This is a new setting for the rMBP that hibernates to disk after something ridiculous like two hours. It drove me absolutely batshit, but thankfully you can change it to something more reasonable via a simple pmset command. (I brought mine up to 24 hours before writing to disk)

It is especially bad because the behavior is a frozen cursor while it reads the RAM image off disk. SSD's are fast but on the 16Gb model it still takes 15-20 seconds and feels eternally broken. My old MBP had a progress bar at least, not sure how they messed it up.

In any case, fix it yourself here: http://www.qandasystem.info/apple/disable-stand-by-mode-on-r...

[cstejerean]

Thanks for the pointer. From looking at that on my rMBP I see standbydelay set to 4200 seconds. Increasing it to 2 hours might actually work fairly well for me, as I'm not usually away from the computer for longer than that during the day.

[thegooley]

Sounds plausible to me. I suppose it doesn't matter how fast the SSD is... it has to restore (up to) 16GB from disk to memory before it's ready.