12-inch MacBook w/ 512GB SSD Super Slow Write Speeds

Discussion in 'MacBook' started by SchneiderMan, Apr 17, 2015.

  1. SchneiderMan macrumors G3

    SchneiderMan

    Joined:
    May 25, 2008
    Location:
    Apple state
    #1
    Anyone know why my write speeds are so poor? This is a 512GB model and I've tried restarting a few times and made sure nothing else was running in the background. It took so long to transfer my time machine backup because of this.
     

    Attached Files:

  2. close2reality macrumors 6502

    Joined:
    Sep 21, 2012
    #2
    Is it brand new? I say this because if file vault is still processing in the background it will nuder your speeds.
     
  3. mattopotamus macrumors G5

    mattopotamus

    Joined:
    Jun 12, 2012
    #3
    Those speeds are standard for the rMB (250-400) for write. Let the app run for a little bit.
     
  4. SchneiderMan thread starter macrumors G3

    SchneiderMan

    Joined:
    May 25, 2008
    Location:
    Apple state
    #4
    I got it yesterday and yes, I turned on the vault security but it was a full day ago and I haven't kept it shut. So by having this encryption on will that affect backup transfers indefinitely?
     
  5. Cvx5832 macrumors regular

    Joined:
    Nov 2, 2014
    #5
    ^ This. I suppose we'll find out eventually why, if you let the test run for a few minutes, the measured read and write speeds get faster and faster.

    I also got the same results. But if I let it run for a few seconds it will "catch up" to full speed.

    If I just let it run this is where my rMB caps out:

    [​IMG]

    ----------

    I don't think so. I ran this test before and after FV2 encryption and the speeds were the same. Like within +/- 5MB.
     
  6. close2reality macrumors 6502

    Joined:
    Sep 21, 2012
    #6
    No, having encryption on is fine. I'm speaking about when you open the box for the first time and setup the laptop, for the first hour or so file vault is processing.

    You would need to go into preferances/filevault to see it's status. But if it's been a day it is done.
     
  7. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #7
    Can't believe I'm quoting C2R here and agreeing ;), but this is right. FV2 is not a zero-impact situation but once the disk is encrypted you'd be very unlikely to see the difference without doing a careful side-by-side test.
     
  8. gregsapphire macrumors member

    Joined:
    Jun 22, 2014
    #8
    I am having the same issues. Had to reboot rMB during set up because when asked about FileVault it froze. Then it froze again later on during FileVault. Had to Reboot and reinstall OS X. I'm a little disappointed in the SSD speeds. Expected the 512gb SSD to compare with the new Macbook Pro and Macbook Air SSD speed.
     
  9. SchneiderMan thread starter macrumors G3

    SchneiderMan

    Joined:
    May 25, 2008
    Location:
    Apple state
    #9
    Got it, thanks all! Also set a firmware password while I'm at it (lock down all the things!) :D
     
  10. vanimal macrumors 6502a

    Joined:
    Sep 12, 2014
    #10
    Those are pretty much correct speeds and the speeds I've seen across all reviews. There was some talk going around Apple used some previous generation SSD modules from previous generation MBA. Don't know how true that is but that was the speeds of the 2011-2012 MBA?

    Again just something I heard over a well known tech review via YouTube. The new "read" on the MBA and MBPR are like 1200 right?
     
  11. close2reality macrumors 6502

    Joined:
    Sep 21, 2012
    #11
    This has been a spotty issue with a lot of setups, not just rMB's. It happened to me on my rMBP.

    You can either see if it rides itself out, depending on how long you feel like waiting. Or do as I did and reboot/reinstall OSX.
     
  12. newellj, Apr 17, 2015
    Last edited: Apr 17, 2015

    newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #12
    I am impatient. That's what I did. I'm getting write speeds in the mid-400s and read speeds near 800 mb/s.
     
  13. gregsapphire macrumors member

    Joined:
    Jun 22, 2014
    #13
    Wait you reinstall OS X and are getting 500 read? I reinstalled the OS X once because things froze up. But I am not sure if it was done properly. Did you restore from back up? Do you have file vault on? File vault was taking forever for me.
     
  14. SchneiderMan thread starter macrumors G3

    SchneiderMan

    Joined:
    May 25, 2008
    Location:
    Apple state
    #14
    Yes the reads and writes on the new Airs and Pros are insanely fast. I've had a Retina MBP and 2014 Air and they've all outperformed this new MacBook. Can't say I'm not extremely disappointed in these write speeds.
     
  15. vanimal macrumors 6502a

    Joined:
    Sep 12, 2014
    #15
    They don't seem that bad. It's not a high powered machine nor is it meant to be. Sorta kinda lol. Depends how much you want to push it. :cool:
     
  16. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #16
    [note: typo in my earlier post: write speeds in the mid-400s and read speeds near 800 mb/s] Not only am I impatient, I can be fussy about eliminating variables, so I booted into Internet Recovery (cmd + option + R) and after erasing the disk reinstalled from Apple's server. When it was installed I turned on FV2. The 500 mb/s is with FV2 enabled.
     
  17. gregsapphire macrumors member

    Joined:
    Jun 22, 2014
    #17
    How long did FV2 take to finish? Also did you restore from a back up? I was thinking about wiping the SSD and reinstalling everything as well as the using FV2. And restoring from a time machine back up. What do you think? I already got 90gbs of space used because of my huge photo library.
     
  18. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #18
    Greg, see my post below - I did a "bare metal" installation, but I had nothing at all on the disk at the time.

    I'm hesitant to tell anyone else what to do, but if I were in you place, even though it may be overkill, I think I'd back everything up to TM, erase the disk, reinstall from Internet Recovery (make sure you see the spinning globe), then reinstall only my apps and data from TM. Encrypting the base OS installation probably took about an hour - I wasn't timing it.

     
  19. gregsapphire macrumors member

    Joined:
    Jun 22, 2014
    #19
    How'd you reinstall? I mean apple says to restart the mac and hold command + R. But many people online say hold option instead. I just want to make sure I am doing it correctly.
     
  20. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #20
    If the recovery partition is still on your disk, cmd + r will reinstall OS X from that. If, against the odds, there is a problem with the file, you're just repeating a problem. If the recovery partition is still on your disk, internet recovery needs cmd + option + r. That will boot up to a black screen with a spinning globe. You will need an internet connection (in this case, wifi...not ethernet port!) to download the OS X installer from Apple. Make sure your data and any apps you can't easily reinstall from the MAS are backed up first!
     
  21. udflyer macrumors 6502

    Joined:
    Jan 3, 2011
    #21
    App Store is giving me a 503 when I try to download Blackmagic diskspeed utility


    ANy ideas ?
     
  22. Gaprofitt macrumors regular

    Joined:
    Jul 30, 2009
    #22
    ]


    That's normal, it's not an M2 SSD drive, it is an older technology used to keep heat down. It's not going to be comparable to say a macbook pro m2 drive/chip. Still lightyears better than a mechanical drive. Not sure why everyone is all hung up on SSD speed. Plenty of other bottlenecks to worry about when talking compute resources.
     
  23. Gaprofitt macrumors regular

    Joined:
    Jul 30, 2009
    #23
    ]


    That's normal, it's not an M2 SSD drive, it is an older technology used to keep heat down. It's not going to be comparable to say a macbook pro m2 drive/chip. Still lightyears better than a mechanical drive. Not sure why everyone is all hung up on SSD speed. Plenty of other bottlenecks to worry about when talking compute resources.
     
  24. TillysWily macrumors regular

    Joined:
    Jun 8, 2011
    #24
    This is what I'm getting right out of the box 1.2/512
     

    Attached Files:

  25. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #25
    This is my 1.2/512, very similar:

    [​IMG]
     

Share This Page