Memory normally refers to RAM. Temporary, high-speed storage used to keep frequently accessed information available for use and helps keep the computer running smoothly

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High memory usage, macbook pro retina feeling sluggish

My Macbook Pro Retina seems to be feeling sluggish and I don't think it should at all. I'm running: photoshop, 1080p movie on VLC plugged into a Thunderbolt Display. Looking at the activity monitor ...
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1answer
2k views

Purge command - Unable to purge disk buffers, error #-2?

When I attempt to run the purge command, I get the same error every time. [ERROR] <CPDevice.c:3816> Unable to create new counter client. [ERROR] <CPOSX.c:1172> Unable to get user ...
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1answer
246 views

16 GB Crucial RAM For MacBook Pro

I'm looking to upgrade my MacBook Pro to 16GB of RAM. I'm considering: Crucial 16GB (2 x 8GB) DDR3 1333MHz PC3-10600 204pin SODIMM CL9 Mac The specs match what my MacBook wants from RAM but it ...
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1answer
6k views

Can I use DDR3 1600MHz RAM in a Mac instead of 1067MHz?

I'm trying to get a 16 GB (2x of 8 GB) RAM to boost my computer, even though Apple says that it's only 8 GB on macs, but we know Apple is wrong on that. However, when I searched the online shopping ...
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1answer
908 views

Why does OSX use 6GB of RAM after restart?

Just had OS X crash on me because of swap pressure. I have 2012 rMBP running the latest version of Mavericks (10.9.1), and it only has 8GB of RAM. Since reboot, OS X now consumes 6GB, which leaves ...
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1answer
2k views

How can I check to see if my Mac is running in dual channel mode?

I've just upgraded my iMac's memory with a new 2x8GB kit: Although I know this "should" be dual channel (as both banks have the same amount of RAM), I'd like to know for sure. How can I check?
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4answers
692 views

iMac slow and unresponsive after Mavericks

There have been a few questions and answers about memory usage, whether one should pay attention to the Activity Monitor, that Memory Pressure is more indicative of a system being maxed out on RAM, ...
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2answers
301 views

iPhone 5s: benefits of 64 bit processors if no more than 4 GB of RAM?

My understanding is that the (main) reason of having a 64 bit processor, is to be able to use more than 4 GB of RAM. In PCs, it is now very common to have more than 4GB of ram, and to really be able ...
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2answers
242 views

How to test memory after memory upgrade?

I recently upgraded my macbook from 4G to 8G and wonder if there's a tool to test the quality of new memory. I found memtest 4.22 seems only test about 1G: $ memtest all 2 Memtest version 4.22 ...
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3answers
581 views

Poor battery performance on MacBook Pro [duplicate]

I have recently bought a very expensive new MacBook Pro with 8 GB memory and now I am frustrated by its very fast battery drainage. Often I see only 2 hours left on full battery charge! Right now it ...
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1answer
191 views

Impossibly low RAM

I remember the times when I got my macbook pro with 4GB of RAM: I could launch Firefox, VirtualBox and Firefox inside a VirtualBox and it worked reasonably well. Two years later, when I start the ...
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1answer
97 views

iMac 2009 works slow

iMac (model 2009, purchased in late 2012) sometimes becomes extremely slow. I've opened the "System monitor" and discovered that there is a huge lack of RAM. But as you can see there is no app ...
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1answer
612 views

Does my Macbook need “special” RAM?

I want to upgrade the RAM on my Macbook Pro 4,1 A1260 (Early 2008). Can I just use any RAM of the compatible "type", or does it need special magic RAM because it's a Macbook? Also, is there any ...
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2answers
635 views

Does use of memory with timing CL=10 instead of Apple used CL=11 slow my Mac down?

After reading Why is 8GB, Ballistix 204-pin SODIMM, DDR3 PC3-12800 memory module showing as not compatible with Macbook Pro mid 2012? on the Crucial forum, and the response from Crucial: use our ...
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2answers
258 views

OS X using lots of memory for no apparent reason

I have about 2 GB or more memory that I don't know what its used for. When I restart my computer with no applications running, the used memory is 4 GB, and when I open browsers its over 7 GB used from ...
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1answer
460 views

On OS X Mavericks, why does it always say my memory used is like 99% of my total memory?

I keep getting these results from Activity Monitor in Mavericks, where it seems like 99% of my memory is being used (where in the screenshot I have 10MB left). Am I just reading this wrong? How am I ...
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0answers
942 views

How do I get my iPad to show up under DEVICES in iTunes 11.1.3?

I've been having problems seeing my iPad (and my iPhone, haven't tried my iPod) under the DEVICES section on the left (where the STORE, GENIUS, PLAYLISTS, LIBRARY are located) in iTunes 11.1.3. It ...
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0answers
266 views

Memory runs out issue with a Mac Air 11.6", Mac OSX 10.9

I use word 2010 a lot, with medium length documents (10-20pages) It sometimes takes 2 gigs of RAM just for word. Why is that? none of the files themselves are over 50mb. The Mac then freezes or ...
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1answer
188 views

Alternatives to purge command

I read in a different thread (How can I use automator to run "purge" command in Mavericks?) that using the purge command in Terminal to free memory is not a good idea. Does anyone know an ...
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0answers
133 views

How much RAM do you have available after you restart your Mac and do not have any running applications? [closed]

I am trying to figure out the issues of my Mac's performance. I currently have 2.75 GB / 4 GB RAM available after I restart my laptop and do not have any running apps at all. I'm currently running ...
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1answer
446 views

Huge memory leak in Mountain Lion

I recently bought a MacBook Pro Intel Core i7 with 8GB DDR3. By monitoring with htop I notice that my RAM usage sometimes goes up to 7GB, with only Google Chrome, a few iTerms a text editor and app ...
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1answer
2k views

Memory terminology in Mavericks Activity Monitory

In Mavericks, the Activity Monitor has changed its memory terminology. The columns available when viewing processes in the memory tab now include "Memory", "Real Memory", "Real Private Memory", "Real ...
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1answer
815 views

Restore the RAM pie chart dock icon which was removed in Mavericks? [duplicate]

I configured Activity Monitor like this on all of my machines. I also set up my non-techie friends' Macs this way as well: It was the best "health snapshot" for the Mac I'd figured out, and not ...
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2answers
9k views

com.apple.iconServicesAgent using a lot of RAM in 10.9

I performed a fresh install of OS X 10.9 and now the process com.apple.iconServicesAgent is using >300MB of RAM, that is quite a lot. This process is using the second most amount of memory of all ...
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3answers
19k views

What scale or measure does Mavericks' and Yosemite's “memory pressure” adhere to?

Mavericks' (and also Yosemite's) Activity Monitor shows a new diagram, the memory pressure. Sadly, its help text only vaguely explains what exactly it measures. How is memory pressure calculated? ...
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3answers
2k views

Can I purchase regular DDR3 RAM for my MAC (not from an iMac store?)

I know that buying and installing RAM from a regular computer shop will be cheaper for me. I was just wondering if a Macbook Pro 17" early 2011 model uses specific 'Mac' DDR3 RAM or if I can get away ...
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0answers
491 views

Safari going nuts in Mavericks - iMac totally unresponsive

Is anybody else experiencing Safari going crazy on Mavericks? I have just unlocked my iMac (Model 2012, 12GB RAM, 2TB HDD, Core i7 3.4GHz) and everything was slow motion. The hard disk was spinning ...
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1answer
358 views

Memory Upgrade: Planning to Use Different RAM Model

I'm considering upgrading to a total of 16GB RAM. Currently, I have 4GB. MacBook Pro: 13-inch, Late 2011 Memory 4 GB 1333 MHz DDR3 The problem: it appears the local resellers no longer have such ...
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4answers
4k views

Maverick is sluggish with 2GB of RAM using XCode 5, should I upgrade with 4GB or 8GB?

I have a 13 inch macbook pro from mid 2009 (5,5), it's really slow when I switch application, I'm using google chrome, XCode 5 (I already disabled "show live issues"), and not many other apps: Cog ...
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2answers
465 views

Should I buy all new memory or combine with old?

I tried googling for answers on this, but couldn't actually find any decent information. I have a mid 2010 Macbook Pro, which according to Apple supports up to 8GB of ram. I already have a single 4GB ...
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2answers
5k views

Insanely high kernel RAM usage (over 9GB) in Mavericks

I upgraded to Mavericks yesterday, and everything seemed to go fine, but today I noticed that my computer was becoming a bit slow. I checked Activity Monitor, and CPU / disk were at normal levels so I ...
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1answer
3k views

Is integrated VRAM included under `kernel_task` RAM in Activity Monitor?

I was stunned to discover that Mac OS X kernel can consume 750MB of RAM. A few related questions: Is it a problem if kernel_task is routinely above 130MB on mid 2007 white MacBook? kernel_task using ...
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0answers
119 views

Macbook Pro Late 2011 stuck at 0.8 GHz

I have been experiencing a lot of problems with my Macbook Pro slowing down and crawling through small tasks like getting mail and opening Launchpad. I have 8 GB of 1333 MHz DDR3 memory and a 2.2 GHz ...
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1answer
150 views

How much more RAM can I add to my Mid 2007 24" iMac? [duplicate]

I have a "vintage" iMac with the spec below: This is going to sound like a real beginners question but can I up the RAM anymore? At the time, I upped it to as far as I could but could I put say 2 ...
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2answers
15k views

How can I use automator to run “purge” command in Mavericks?

In Mountain Lion, I frequently used a simple automator app called "Purge Memory" which just ran "purge" in the command line. I really enjoyed cleaning the RAM, especially when buggy apps ran memory ...
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7answers
56k views

Mavericks unusually high RAM usage

I thought Mavericks was suppose to utilize RAM memory better, thus run smoother. Running ML on Mac mini 2012, with 16GB RAM...always running smoothly even with over a dozen apps running. Now, after ...
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1answer
26 views

Memory card on iPhone

I have an sd converter for my iPad but can't find anything like it for my phone? Plan on using it to view shots from a trailcam while in the woods
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2answers
402 views

MacBookPro crashed with pixel disturbed screen and 3beeps

I have MacBook Pro 15-inch, Early 2011 Processor 2 GHz Intel Core i7 Memory 8 GB 1333 MHz DDR3 Once a week it crashed with beep sound ( 3 times ) beep - beep - beep Then pixel in the display ...
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1answer
1k views

Mac has become insanely slow : Processes SystemUIServer, UserEventAgent and loginwindow using a lot of memory

I have been using my Mac for for many months without any problem. But recently all of a sudden the Mac became insanely slow. I opened Activity Manager to see what was happening. For three processes ...
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1answer
311 views

RAM - Can this configuration support dual channel?

I'd like to upgrade my 27" late 2013 iMac. The current 8GB is a bit too little for me, and upgrading all the way to 32GB is a bit too expensive for me at the moment. For the time being, I'd like to ...
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1answer
300 views

Mysql process takes 500 mb of primary memory

I have a MBA 2013, and its not more than few days that I installed MySQL. I have not created any database in mysql yet, but still it takes a lot of memory on RAM. I have configured it to start ...
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4answers
686 views

Which memory speed for an early 2008 Mac Pro?

I've got an early 2008 Mac Pro with 4 Gb of memory which I would like to upgrade, but I'm unsure of the memory speed. In my "About This Mac" dialog it says the memory speed should be 667 MHz, but ...
4
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2answers
10k views

MacBook Pro 13-inch maximum memory

This Apple support article, MacBook Pro: How to remove or install memory, says that the maximum memory on a MacBook Pro 13-inch is 8 GB. Is that a hard limit? Why could I not install a 16 GB memory ...
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1answer
2k views

OS X's “free” or “/proc/meminfo” equivalent

OS X lacks the "Linux-friendly" free or /proc/meminfo. What would be the most reliable and backwards-compatible way of extracting this info: Current free memory, in bytes Going back as far as ...
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2answers
194 views

ram upgrade works in safe mode but not in normal mode

I have new installed 8 gb ram in to my 2010 imac i3. It kernel panic when booted, but worked when I start it in safe mode. It also shows as 12 GB ram. ( 4 Gb original and 8 gb new. ) How can I ...
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2answers
6k views

Computer keeps crashing after I replaced the RAM

I have an early 2010 MacBook Pro. I just upgraded the RAM to 8GB because I was constantly using more than 4GB. I have upgraded to flash storage as well so I didn't want my system constantly using ...
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2answers
330 views

Performance issues, can I recover memory?

In the past month I am having some serious performance issues with my MacBook Pro (2008 model). From the activity monitor, I get that the CPU usage is low (25%), disk usage is low (256 GB SSD drive, ...
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0answers
258 views

Is there a way to limit Firefox / Chrome RAM usage?

I would like to know if there is any kind of setting to limit the RAM browsers can use. It's annoying that even if you have 30GB of RAM available eventually it will be all used by the browser.
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0answers
269 views

Weird graphics issues after waking MacBook up

After locking my Mac and waking it up a few hours later this is how it looks: Also, some of the icons look weird after restarting the system (for example not fully rendered time machine icon: ) ...
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1answer
40 views

Does iOS have the capability to execute multiple apps in memory, and enable you to switch between them, restoring the previous state?

This is for buying purposes; i.e. does the kernel schedule the processes and threads belonging to every process, and do the apps save states that can be resumed at the user's discretion? Please fill ...