If you swap a lot it makes a lot of sense for speed reasons and generally to avoid swapfile writes to give your machine enough ram. You can check if you swap a lot via the activity monitor delivered with every osx.
OS X VM SLEEPIMAGE HOW TO
You can find various links on how to move the swap files on the net, I have not looked deeper into the spotlight index issue.Īlso to avoid swapping find out if you have enough ram in your machine, OSX behaves like every good unix by swapping only if it really runs over the ram it has (unlike windows which seems to swap from second zero). Which means you still get some saftety net of a full desktop restore if you are low on battery without hitting the ssd too hard.Īnother two things you can do if you have a normal secondary storage hdd is to move the spotlight index and the swap files off from the ssd to the hdd, you sacrifice some speed that way but outside of noatime and the PowerMode 3 those two things hit the hdd most with write cycles. PM 2 means that the sleepimage is only written whenever the machine loses power.
Fire up Terminal.app and type the following:Īctually it makes more sense to move the power management mode to 2 instead of zero. But with this simple setup I was able to turn it off and avoid the kernel panic.įirst of all, we can check the current setting of your Mac. I personally have problems when my Macbook wakes up from hibernation even with the Force Firmware 2.0 installed in my drive. On the bright side, you also save some disk space (equal to the amount of your RAM). This behavior can be changed, at the cost of some safety, so that memory content is not saved to disk. The content saved on disk is only used in case of a power loss. The ram is still powered on however, and is used when starting up again. Sleep initially means Standby, but if the battery level drops very low then the laptop automatically Hibernates (what Apple calls Hibernation "Safe Sleep").īy default, when closing the lid on a MacBook, the content of the ram is saved to disk for safety.
OS X VM SLEEPIMAGE MAC OS
Well, sleep concept can be sometimes misunderstood in Mac OS X. Basically, the settings to be applied are:
Since I'm using a Corsair F240 in Mac OS X, I decided to share useful (and easy) tweaks to improve the lifespan and the performance of the drive.Īll the settings are independent and can be applied according your needs. I have seen some threads about how to setup Windows 7 in order to improve the SSD performance but none concerning Mac OS X.
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