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Your System has Run out of Application memory

I upgraded to Mavericks from Mountain Lion, and I have been getting the error message "Your System has Run out of Application memory", and I am forced to restart the computer to be able to keep working.


I have been monitoring the Activity Monitor and I have not found a process that is increasing the amount of memory used. I have seen a proliferation of processes.


I have an iMac 27-inch, Late 2012 with a 3.4 GHz Intel Core i7 and 24 GB 1600 MHz DDR3.

iMac, OS X Mavericks (10.9), 27-inch Late 2012; 3.4 GHz i7; 24GB

Posted on Oct 23, 2013 7:33 PM

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371 replies

Jan 6, 2015 12:28 PM in response to flemishgael

You have a small internal drive, and it has very little free space left. It would appear that there is no longer sufficient space available for system and application caches, etc. You will need to clean house, move some stuff off your internal drive that you don't need on a daily basis and store that on an external disk.

Aug 11, 2015 7:37 AM in response to REPG

I am having the same problem. I bought the most powerful Macbook Pro available at stores last May to process neuroimaging data. Unfortunately I can't process the brain images because I get the "system has run out of application memory"error message half way through the preprocessing (in Matlab when running FASTER for EEGLab, specifically, on almost the smallest dataset that guy is designed to handle). I'm running OSX 10.9.5 on a 23 Ghz intel core i7 with 16 GB of memory. I do not have a partition or anything like that, and I've tried closing all other programs, turning off wifi and etc. The old, slow, and awful Windows desktops in our lab are able to process these images so my awesome Mac should be able to handle it. I am hoping Apple releases a fix soon; otherwise I've essentially purchased a very expensive word processor. Thanks.

Oct 14, 2015 2:30 AM in response to REPG

In my case: Running Mavericks 10.9.2 with 18GB of RAM and "many" very large hard disks, it turned out that the kernel_task was filling up. The real culprit seemed to be the Dashboard process which although was only taking up a little over a gig of RAM, was driving the kernel_task to fill up. It also appeared to not be responding to commands. Disabling the entire Dashboard process from the command line:


defaults write com.apple.dashboard mcx-disabled -boolean YES; killall Dock


Instantly brought the kernel_task down by about 10GB of RAM and the system is running fine now. To restore the dashboard (if you really need it, or this didn't do the trick for you is:


defaults write com.apple.dashboard mcx-disabled -boolean NO; killall Dock


So far no problems for several days, and the kernel_task is no longer filling up.


(The reference tip on how to disable the dashboard process was from: http://www.tekrevue.com/tip/disable-dashboard-os-x/ )

Oct 14, 2015 6:34 AM in response to JKane

JKane wrote:

...Instantly brought the kernel_task down by about 10GB of RAM and the system is running fine now....

NOTE: 10GB is an excessive amount of memory for the kernel_task to use. The kernel_task of an 18GB RAM system should be using on the order of 1GB to 1.5GB of RAM. If your just after boot kernel_task using is much above that, I would be looking at the 3rd party kernel extensions you have installed to see if they are being a little greedy.

Mar 21, 2016 3:48 AM in response to REPG

I've just started having this issue with my late 2012 iMac.


Background - it has 32Gb of RAM and about 4 months ago the HDD was replaced under warranty when it failed.


Last week I got the 'Your System has Run out of Application memory' warning and I think it's to do with the Shockwave Flash plugin for FireFox as it was at one point using over 20Gb of my RAM.


Now I've have constant issue with FireFox and the plugin for years, with FF locking up leading to me force quitting the program or plugin to get it working again.


My solution is to now set the plugin to 'Ask to Activate' and only us it when needed. Now the iMac is only using about 8Gb of RAM.

Apr 5, 2016 12:34 AM in response to REPG

I started to get the same issue after latest update.

I've installed the "memory clean" software and it shows over 3Gb of free app memory, I don't get it...

I keep getting the same issue over and over, and I constantly use the same apps with the same frequency and it never run out of app memory before.


My mac: MacBook Pro (15-inch, Late 2011)

Processor: 2.5 GHz Intel Core i7

Memory: 8 GB 1333 MHz DDR3

Storage: 256 SSD

Apr 5, 2016 5:58 AM in response to som6ra

som6ra wrote:


I started to get the same issue after latest update.

I've installed the "memory clean" software and it shows over 3Gb of free app memory, I don't get it...

I keep getting the same issue over and over, and I constantly use the same apps with the same frequency and it never run out of app memory before.


My mac: MacBook Pro (15-inch, Late 2011)

Processor: 2.5 GHz Intel Core i7

Memory: 8 GB 1333 MHz DDR3

Storage: 256 SSD

Uninstall "memory clean" as this is NOT a RAM usage problem, it is a "Virtual Address" problem.


You either have no more disk space to create /var/vm/swapfile(s) -OR- you have a process (or set of processes) that have requested more Virtual Address space than OS X is capable of managing. Virtual Address space is a "Promise" to give you RAM the program touches that region of address space, but until then the operating system may keep the data on disk. But to keep that promise, the operating system needs tables to manage this, and those tables are not infinite, so eventually if a process asks for too much address space, the operating system will run out of table space to make the promise, -OR- it will not be able to create more /var/vm/swapfiles(s) and issue the message "Your System has run out of Application Memory".


So if you are getting these errors and you have lots of free disk space, then chances are you have a process that is trying to use lots and lots of virtual address space, and that may or may not show up as RAM usage, as any data mapped into the process address space, but currently sitting on the disk, will be taking up virtual address space, but will not be showing up as process memory being used.


And things like your program code is memory mapped directly to the program file, and a process can use memory mapped files to access files, instead of using traditional file system read/write routines. These memory mapped files will NOT affect your /var/vm/swapfile(s) usage either, so you cannot always just look at how much space you are using there either.


From an Applications -> utilities -> Terminal session you can try issuing the

ps -o rss,vsz,ucomm -ax | sort -k2

command. This will display each process' real memory (RSS), then the Virtual Memory (VSZ). The sort will be against virtual memory usage, so you will get the largest consumers at the end of the list.


This DOES NOT mean the largest consumers are at fault, as it could be a collection of processes, such as a web browser that uses lots of subprocesses to display pages, and if there are enough of them , they add up.

May 4, 2016 8:37 AM in response to Rlynn68

My computer has been on slow meltdown for just under a week with the Application Memory issue. Did exactly as detailed in Ron's post and BOOM fixed - thank YOU!!!


The thing that seemed to do the trick instantly:


Delete the Calendar cache.


A rough procedure:

Open iCal

Full back up all calendars (full archive I think it's called)

Close iCal.



Go to Finder

'Go" menu

Hold down option key

Go to Library

In Library go to Calendar.

Delete Calendar Cache.


Restart machine.

Start iCal.

Your System has Run out of Application memory

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