5 Replies Latest reply: Feb 26, 2013 11:39 AM by EFRA75
lim203 Level 1 Level 1 (0 points)

I just got the 15inch macbook pro with retina display and upgraded the ram to 16gb.

I watched a few(4-5) hd video on youtube and around the 3 video, I started to feel that the video wasn't playing smoothly.

It got worse when viewing the 4 and 5 videos.

Then I checked activity monitor and found that safari was using 13gb of my ram!

btw the video was only 720p and around 3mins each...

I quit safari and everything run smoothly again.

Is there a way to fix this?

I don't wanna use firefox cuz it doesn't support retina display yet and i hate  chrome!

Safari 6.0, OS X Mountain Lion (10.8.2)
  • 1. Re: safari 6 leaking memory help
    Imp68 Level 4 Level 4 (2,155 points)

    Did you migrate data from another computer?  I remember seeing this before and it turned out to be a permissions issue with the home folder.  Unless it's a messed up safari addon...

  • 2. Re: safari 6 leaking memory help
    lim203 Level 1 Level 1 (0 points)

    nope, I did not restore from my old backups, i just set up my computer as new. For the extensions, I have adblock, youtube5 and fastest youtube.


    youtube 5 is to automaitcally play all youtube videos in html5... i tried turning it off but it didn't make a difference.

    Fatest Youtube is only a button to let me download youtube videos, so i don't think this is the cause.

    i have read that adblock was causing memory for other users too, but the problem went away when they updated their adblock... I'm using the latest version as i just got it recently, so the problem shouldn't from adblock.

  • 3. Re: safari 6 leaking memory help
    Nee Kun Level 1 Level 1 (75 points)

    Try visit http://www.youtube.com/html5 and opt out from HTML5 trial.


    This happend on my MBA before when watching YouTube video, causing many beachballs

  • 4. Re: safari 6 leaking memory help
    Richard E. Cooke Level 2 Level 2 (220 points)

    I just happened to have seen a post on another chat site about how "adblocker" is not compatible with Safari 5 or 6.




    In this thread, they found switching to "GlimmerBlocker" solved it.


    I have noticed my Safari 6 "leaks" RAM too.  I don't know what is causing it, but it almost certainly one of my plugins or ad-ons.


    I switched to FireFox for most browsing - my MBP is on for weeks at a time.  If I were to reboot daily or weekly I could lkely use Safari more often.

  • 5. Re: safari 6 leaking memory help
    EFRA75 Level 1 Level 1 (0 points)

    In my Macbook Pro 4GB RAM recently note memory leak when I opened Safari even with 1 or two windows open without refresh the web content.

    In Activity monitor could see consume Web Content the Safari Spend more the 2 GB RAM (Memory Real become Memory Inactive)

    Solution: Disable All Extensions and probe one to one. Finding that Fastesttube Extension was responsible.

    Check this Info



    Best Regards