Another reason to max out RAM on the rMBP?

Discussion in 'MacBook Pro' started by ldburroughs, Jan 31, 2014.

  1. ldburroughs macrumors 6502

    Joined:
    Feb 25, 2005
    Location:
    Virginia Beach, VA
    #1
    For no important reason really, I took a look at my Activity Monitor and noticed I am using 10.42 GB of memory. Among my open applications are Safari, Mail, Calendar, and Preview. There are a few others that run in the background; however, nothing too intensive as far as I can tell.

    I certainly do not experience any slow down or stutters. In fact, I can't remember the last time I saw a beach ball. I just thought it was interesting that my system uses more than 8 GB of memory on a relatively light load. I also find it interesting that the Activity Monitor is not optimized for the Retina display. The text and icons within the window are pixilated.

    So, for those wondering whether you will ever use more than 8 GB of memory, I'd say it's very likely. Do you need it? Probably not; however, it can find a way to put it to good use.
     

    Attached Files:

  2. heisenberg123 macrumors 603

    heisenberg123

    Joined:
    Oct 31, 2010
    Location:
    Hamilton, Ontario
    #2


    OSX will use more RAM than needed if RAM is there, once you run something else it will re-adjust
     
  3. bobr1952 macrumors 68020

    bobr1952

    Joined:
    Jan 21, 2008
    Location:
    Melbourne, FL
    #3
    With Mavericks, your best bet is to keep an eye on Memory Pressure in Activity Monitor. If is is mostly green, your RAM usage is fine.
     
  4. TheEnthusiast macrumors regular

    Joined:
    Aug 22, 2013
    #4
    The system is not "using" 10GB of RAM. Most of that is cache. Nothing to see here.
     
  5. disasterdrone macrumors 6502

    Joined:
    Aug 31, 2013
    #5
    You don't think there's any benefit to cacheing?
     
  6. heisenberg123 macrumors 603

    heisenberg123

    Joined:
    Oct 31, 2010
    Location:
    Hamilton, Ontario
    #6
    the OP does not understand how RAM works, this is just another one of those "urvrey body neeeds 16GB of RAM" threads
     
  7. WMD macrumors regular

    Joined:
    Jun 12, 2013
    Location:
    Florida, USA
    #7
    You are using 5.35GB (apps). Most of the rest is disk cache. While cache is beneficial, it's not necessary in large amounts. If your system had 8GB, for example, you still wouldn't be swapping - you would just have a smaller cache size.
     
  8. MCAsan macrumors 601

    MCAsan

    Joined:
    Jul 9, 2012
    Location:
    Atlanta
    #8
    The question should never be will I really use 16GB today. The question is will I need 16GB by the time I replace my Mac. I am guessing most folks will keep a Mac around 3 years. No can accurate predict what they will need in 3 years from the OS, apps that come with the OS, and all manner of apps they will get that do not even exist today.

    Ego....buy the most machine (CPU, memory, storage) you can afford. If you can afford maxing out....end of discussion. If you can't afford it, likewise no need to discuss it.

    Here endth the rant.
     
  9. accountforit macrumors 6502a

    Joined:
    Jan 22, 2014
    #9
    I've seen beach balls numerous times this morning. I just received by rMBP about two days ago and today is the first day I have actually used it normally. I run an ebay business on the side and was scrolling through ebay pages and had 10 tabs open off and on. Meaning, I would have a lot of tabs open, close 4-5, and then open more, over and over again. This is a normal search routine. This was all done in Safari with only the mail app open.

    I don't see any page outs yet today, but the beach ball did pop up a few times for a split second.

    I have 8gb.
     
  10. Meister Suspended

    Meister

    Joined:
    Oct 10, 2013
    #10
    I see beach balls in the same way described, too.
    This also happens on 16gb, 32gb and 64gb machines. It has nothing to do with ram.

    I can not fathom that this is another ram thread again...
    I know they are fun but now they pop up about every 48hours.

    And this time the OP doesn't understand the activity monitor again. :rolleyes:
     
  11. TheEnthusiast macrumors regular

    Joined:
    Aug 22, 2013
    #11
    Caching is indeed beneficial since free RAM is essentially wasted RAM. However, this is just another case in which an OP knows very little about how Mavericks handles RAM, sees 10GB of RAM in use in Activity Monitor, and then jumps to the conclusion that a user needs at least 16GB of RAM to have enough headroom to use programs like Safari and Mail simultaneously. The result of that thought process is a thread like this. That, or OP loves a good RAM thread, like most people here seem to do.
     
  12. ldburroughs thread starter macrumors 6502

    Joined:
    Feb 25, 2005
    Location:
    Virginia Beach, VA
    #12
    Thanks RAM master. I understand how ram works. I am not, however, well versed on how OS X utilizes additional ram when it's available. If it's using it for any other purpose, there's clearly a benefit. Sure, it would work fine without more, but it surely isn't wasted. My point is, if you have a fixed memory system, here's another benefit. That's all. Relax.
     
  13. heisenberg123 macrumors 603

    heisenberg123

    Joined:
    Oct 31, 2010
    Location:
    Hamilton, Ontario
    #13
    im no master but if you start telling people, you need 16GB for Mail, Calendar, Safari and Preview your misleading people to waste money

    do you sell used cars by any chance?
     
  14. ldburroughs thread starter macrumors 6502

    Joined:
    Feb 25, 2005
    Location:
    Virginia Beach, VA
    #14
    I honestly don't read "ram" threads. It was just an observation. Besides, why feed into a thread if you don't like the subject matter? Simply don't reply and it will die out more quickly. This is silly really.
     
  15. TheEnthusiast macrumors regular

    Joined:
    Aug 22, 2013
    #15
    Well, I'm not going to argue about whether or not you understand how RAM works. The fact remains, however, that you made more than one loaded claims: no slowdowns or stutters [because I have 16GB of RAM], no beach balls in sight [because I have 16GB of RAM], among others. I'll just give you the benefit of the doubt since you said you don't understand how OS X utilizes RAM. Though, that could be interpreted as one way in which you really don't understand how RAM works, for a specific OS, but I'm not getting technical. :D. By the way, beach balls aren't related to RAM in every case, especially with OS X 10.8.5 and OS X 10.9.x.

    Also, as it turns out, Activity Monitor is optimized for the retina display on my end. Not sure what's wrong with yours? Could it be all that RAM?
     
  16. simon48 macrumors 65816

    simon48

    Joined:
    Sep 1, 2010
    #16
    How would RAM affect HiDPI support in one app!? No way that's happening.
     
  17. Meister Suspended

    Meister

    Joined:
    Oct 10, 2013
    #17
    He was joking.
     
  18. heisenberg123 macrumors 603

    heisenberg123

    Joined:
    Oct 31, 2010
    Location:
    Hamilton, Ontario
    #18
    they got sarcasm on the internets now?
     
  19. dusk007 macrumors 68040

    dusk007

    Joined:
    Dec 5, 2009
    #19
    There is a benefit when you have an HDD in the system but if you run on a PCIe SSD it is really rather useless.
    There are instances where disabling the cache actually helps because maintenance just takes up more resources than it is worth.

    On a system like the rMBP disk caching really might as well be disabled and you would not notice any difference in almost any workload.

    Just because RAM is free and used for something does not mean that something offers any appreciable benefit. Unless that RAM pressure line goes well past the half way mark and turns yellow, you have way more RAM than you need.
    The RAM pressure level of the OP is really low. He would be fine with 8GB and would still have plenty of spare.
     
  20. Mr. Buzzcut macrumors 65816

    Mr. Buzzcut

    Joined:
    Jul 25, 2011
    Location:
    Ohio
    #20
    Bingo. Folks should stay out of these tools if they can't take a few minutes to understand what the data means. They especially shouldn't post about it declaring people need unnecessary upgrades.
     

Share This Page