ivan_0013
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Q: RAM completely used. I tried each solution, anything worked

I have a MacBook Air mid 2012, five days ago I upgrade to yosemite from mavericks. I was having a lot of RAM issues, because as soon as I turned on the computer, I was using 99% of my RAM. So I erase the SSD and I made a clean yosemite installation, but same results for the RAM. I tried everything to solve this, restart the SMC, restart the PRAM, fixing permissions, I get bored of reading post, but anything worked for me. The problem is not only the RAM, battery life is two hours lower than it was with mavericks. How can I fix this?

MacBook Air, OS X Yosemite (10.10)

Posted on Oct 24, 2014 4:02 PM

by Linc Davis,Solvedanswer
Linc Davis Linc Davis
Level 10 (208,037 points)
Applications
A:

As I wrote, shorter battery life in Yosemite is widely reported. I don't know of anything you can do about it at the moment.

Posted on Oct 24, 2014 6:09 PM

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ivan_0013

Q: RAM completely used. I tried each solution, anything worked

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  • by Linc Davis,Helpful

    Linc Davis Linc Davis Oct 24, 2014 4:31 PM in response to ivan_0013
    Level 10 (208,037 points)
    Applications
    Oct 24, 2014 4:31 PM in response to ivan_0013

    It's normal since Mavericks for almost all memory to be in use, either by applications or by the file cache. That's what you should want, since unused memory is going to waste. The relevant measure of whether memory is in short supply is what Apple calls "memory pressure."

    Apple's explanation of memory pressure is here. If you want a more detailed, technical description, see here.

    The short battery life is a known issue, but see below.

    1. Check the cycle count of the battery against the rated life for your model. The battery may be due for replacement. If the power adapter is connected almost all the time, the battery may need replacing even though the cycle count is not too high.

    2. Follow these instructions, or these for OS X 10.9 or later.

    3. In the Energy Saver preference pane, uncheck the box marked

              Enable Power Nap while on battery power

    if it's shown (it may not be.)

    4. You can also try resetting the SMC.

    5. Make sure your system is up to date in Software Update.

    6. Make a "Genius" appointment at an Apple Store, or go to another authorized service center.

  • by ivan_0013,

    ivan_0013 ivan_0013 Oct 24, 2014 5:03 PM in response to Linc Davis
    Level 1 (0 points)
    Oct 24, 2014 5:03 PM in response to Linc Davis

    I heard about that. But with Mavericks my MBA was cooler, and it has better battery performance. Battery is in perfect conditions, I worry a lot about it. I can't understand why with Mavericks everything was fine, and not with Yosemite. Now, that I have made a clean Yosemite install, I though that this issues were going to be solved but, they aren't.

  • by Linc Davis,Solvedanswer

    Linc Davis Linc Davis Oct 24, 2014 6:09 PM in response to ivan_0013
    Level 10 (208,037 points)
    Applications
    Oct 24, 2014 6:09 PM in response to ivan_0013

    As I wrote, shorter battery life in Yosemite is widely reported. I don't know of anything you can do about it at the moment.

  • by ivan_0013,

    ivan_0013 ivan_0013 Oct 25, 2014 2:33 AM in response to Linc Davis
    Level 1 (0 points)
    Oct 25, 2014 2:33 AM in response to Linc Davis

    Do you think that this problem is going to be solved with some kind of upgrade?

  • by Linc Davis,

    Linc Davis Linc Davis Oct 25, 2014 8:24 AM in response to ivan_0013
    Level 10 (208,037 points)
    Applications
    Oct 25, 2014 8:24 AM in response to ivan_0013

    Nobody here knows any more than you do about what Apple will do in the future.