MacBook Pro Hibernatemodes
Tonight I got inspired by this article and started to play around a bit with the OS X hibernate modes. The first thing I did was to just try out both modes with all application I had opened at the moment. Then I wanted to know how the performance is when some applications were running. Those tests are very primitive since swap was still active and I didn't got a nice stopwatch, so here are the first results:
My final conclusion is to stick with the default safesleep hibernatemode 3 since the difference is very little and rarely I don't manage to get to a power-plug in time.
RAM Usage ~350MBI found it quite interesting that the safesleep mode didn't took more than a couple of seconds longer to go to sleep so I figured out a nicer test environment. I disabled the swap space and created a 1GB ramdisk. (In fact I tried to create more ramdisks but didn't manage to get more than ~1.3GB of memory active). The first test was just after booting up, the second with a full ramdisk. In both cases where very less programms running so the OS could go to sleep without interruption.
Hibernatemode 0: 35s
Hibernatemode 3: 40s
RAM Usage: ~1.4GB
Hibernatemode 0: 35s
Hibernatemode 3: 48s
PhysMem: 124M wired, 134M active, 641M inactive, 900M used, 1.12G free
Hibernatemode 0: 35s
Hibernatemode 3: 38s
PhysMem: 132M wired, 1.23G active, 630M inactive, 1.98G used, 25.5M free
Hibernatemode 0: 35s
Hibernatemode 3: 40s
My final conclusion is to stick with the default safesleep hibernatemode 3 since the difference is very little and rarely I don't manage to get to a power-plug in time.
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