Tagged Questions
0
votes
0answers
20 views
Latest OS X 10.8.3 Memory Leak
I have 8Gb memory installed. When I quit all of my programs i have free 500Mb. After purge command this value increased to 700Mb. Where is my 8Gb? It is marked as WIRED...
Reboot helps but only for 1 ...
2
votes
2answers
46 views
MBP w/ OS X 10.8.3 Performing Quite Slowly Lately
My MBP (2.66 GHz i7, 4GB RAM, 500GB HDD) is about two or so years old. It's been running like a champ for most of its life. However, within the past few months, I've noticed a considerable degradation ...
0
votes
1answer
74 views
5Gb of RAM being used with NO software running?
My computer (brand new) was using 12 Gb of RAM so after I was done exporting my video I force-quit everything and 8 minutes later it's still using 5Gb or RAM, is this normal?! It seems like so much!
...
0
votes
1answer
275 views
Macbook pro 13 2012 (HD4000) 8GB(1600 Mhz) single RAM stick issue
I have a Apple Macbook Pro 13" 2012 IvyBridge HD4000 Model which came with
2GB x 2GB RAM.
I Recently bought a single stick of 8GB RAM 1600Mhz (which is compatible).
Gskill 8GB DDR3 FA-1600C11S-8GSQ ...
8
votes
3answers
339 views
How do I automatically kill processes that leak memory?
I have problems with processes that leak memory. They cause my hard drive to be filled with swap files in /private/var/vm.
I would like leaking processes to be killed at sight by the OS. I’m not ...
2
votes
1answer
149 views
How to prevent OSX from allocating as much virtual memory as there is space available on the hard drive?
I recently had data loss because the hard drive was completely used up by virtual memory and some programs couldn’t handle zero free space on the hard drive. How can I prevent this from happening ...
1
vote
0answers
232 views
OSX - How to find out which process eats up memory?
My MacBook Pro has 8G RAM. Recently memory leak offen happened. Page outs and swap used kept increasing. The last time it used ~8G swap space.
But in Activity Monitor, I can't find any process has a ...
1
vote
1answer
76 views
Why does free + active + inactive + speculative + wired not equal total RAM?
When I run vm_stat on my 10.6.8 MacBook Pro with 2 GB of RAM I get the following:
Mach Virtual Memory Statistics: (page size of 4096 bytes)
Pages free: 90518.
Pages active: ...
1
vote
1answer
111 views
Can one influence Mac OS X's / Darwin's filesystem caching behaviour?
I have the following problem: When I run processes that consume a lot of memory, Mac OS X seems to refuse to release a large portion of the filesystem cache:
In fact, instead of letting go of the ~ ...
3
votes
1answer
152 views
find what's producing inactive memory
First of all i'd like to ask politely for all of those who feel the need to explain it to me how perfect apple's memory management is to ignore this thread.
A little background:
The theory goes that ...
0
votes
1answer
80 views
Mac has enough memory, but still pages in, is that a problem?
I recently upgraded my memory, but I notice that while the OS does NOT page out at all (from what I see in Activity Monitor), the machine pages in regardless.
Why does that happen? Is that a problem?
...
7
votes
3answers
2k views
How does memory management work in Mac OS X?
I am a university student who has been trying to write a compare and contrast paper between how Windows, Linux, and Mac OS X manage memory. For instance, with Windows, it's physical memory (RAM) and ...
16
votes
2answers
5k views
Isn't Inactive memory a waste of resources?
I'm looking for explanation of memory usage on my machine especially in light of the example in this screenshot below:
I understand what is Free and Active means
But what are the meanings of Wired ...
0
votes
0answers
51 views
Is there a way to monitor the stack of execution in order to find the longest hangs?
Related to this unsolved mystery: apple.stackexchange.com/questions/62416/why-do-i-get-serious-execution-lag-on-clicks-application-switching-and-general
I'm wondering if there's a way to see which ...
0
votes
1answer
937 views
Strange QuickLook Error
I recently installed an SSD (m4 crucial latest firmware) with TRIM enabled on my late 2011 MBP 13". I did a clean install of Mountain Lion 10.8.1, enabled FileVault 2 and everything was working fine ...
6
votes
2answers
1k views
Disable inactive memory swapping
Background:
OSX keeps some information in RAM that is no longer used, but was recently used. This is called inactive memory, and is intended to improve user experience by speeding up some actions:
...
3
votes
2answers
501 views
Why might more memory be wired in safe mode than in normal mode?
Maybe more noticeable in Lion and Mountain Lion, than in Snow Leopard and earlier versions of the operating system:
in safe mode, an unexpectedly large amount of wired memory.
Question
Why ...
5
votes
3answers
2k views
Why does Finder use 59GB of swap space?
My new retina MacBook Pro(with 16GB RAM) keeps receiving this "Your Mac OS X startup disk has no more space available for application memory" message. I have 300 GB of free space on my hard drive, and ...
0
votes
2answers
2k views
Can I use 16 GB RAM with my MacBook Pro 7,1?
I just picked up 16GB of RAM for my MacBook Pro, running the newest OS X. According to the NewEgg reviews, it should work in it. However, once I boot up, it shows the Apple logo and, after a few ...
7
votes
1answer
929 views
Why is it that my Mac would rather swap than clear inactive memory?
Why is it that my Mac would rather swap than clear inactive memory? I know people say that the Mac OS manages itself and whatever, but there is a serious performance dip when my MacBook starts ...
13
votes
2answers
4k views
Why do Apple's latest MacBook Pros cap the RAM limit at 8GB?
According to apple's latest documentation (at the time of writing), the cap on the newest MacBook Pros is 8GB RAM.
The Mac Pros, however, can take up to 32GB RAM.
So, why do the MacBooks have this ...
1
vote
0answers
137 views
Sum of all processes' real memory not equal to used memory?
I wonder why the sum of all processes' real memory listed in Activity Monitor is not equal to (MUCH less than) the used memory?
0
votes
1answer
47 views
Are the per process memory and other statistics defined the same as the system wide stats?
There's been a lot of posts about memory in OSX. None have really documented what the screen below speaks to. Especially the difference between private memory, and virtual private memory. Also does ...
1
vote
1answer
183 views
Any way to know what causes allocation of wired memory?
Activity Monitor lets me see how much memory is allocated as "wired", but I can't find a way to break the allocation down by applications or other memory consumers.
Is there a tool out there that ...
2
votes
2answers
150 views
What do these different terms for system memory in OS X mean? [duplicate]
Possible Duplicate:
What does it mean if I have lots of “Inactive” memory at the end of a work day?
I just bought a MacBook Pro (I've been a Windows user before this), and I ...
1
vote
2answers
398 views
Why is my memory still inactive after purging?
I'm trying to understand how memory is allocated on my machine. I have read, and believe I understand, these posts and associated links:
Trouble Understanding Inactive Memory in MacOSX, Inactive ...
16
votes
5answers
6k views
What is wired memory?
I'm trying to figure out what is using all of the memory in my Macbook Pro running OS X Lion. I have 8 GB of memory total. When I quit all active programs except Finder and Activity Monitor, then run ...
2
votes
1answer
1k views
Why is my inactive memory not getting free?
When my MacBook Pro (13" 2010, Intel C2D 2.4 GHz, 4GB RAM 1067 MHz DDR3, running Snow Leopard) runs out of free memory, instead of releasing inactive memory (which is mostly about 500 - 1000 MB), it ...
1
vote
3answers
384 views
MacBook detects a 4GB DIMM as a 1GB DIMM?
I upgraded the memory on my MacBook (unibody, Core 2 Duo 2GHz).
I followed the instructions here and bought a single 4GB DDR3-1066MHz SODIMM.
After installing it, the MacBook only detects 1GB:
...
1
vote
0answers
225 views
memtester hangs in single user mode
Trying to test as much of my 8 GB of RAM as possible with memtester, I encountered a hangup in single user mode, but not when running memtester on my admin user account.
vm_stat is used to calculate ...
3
votes
3answers
3k views
How do I check my Mac's RAM?
I know there is MemTest86+ for PCs, but what can I use to see if my RAM is actually good in an Apple product? Whether it's a MacBook, MacBook Pro, iMac or Mac Pro? What symptoms would show that RAM is ...
0
votes
1answer
134 views
Can I force Mac OS to cache my most frequently used applications?
If I buy a lot of ram for my new iMac (16GB), is there a way to make the system cache my most frequently used applications so the launch time is much faster?
5
votes
4answers
13k views
Startup disk has no more space available for application memory?
I purchased a new Macbook Pro (8,3) last April, and have been using it heavily for xcode development, and little else.
This morning a message popped up:
"Your Mac OS X startup disk has no more space ...
6
votes
2answers
668 views
Trouble Understanding Inactive Memory in MacOSX
I thought that I understood how MacOSX manages memory, but recently I’ve become baffled by its performance. Here is the situation:
I have a brand new Core i7 system with 8GB of physical memory ...
11
votes
2answers
2k views
Can I force my Mac to make better use of the inactive memory?
I use mysql and it takes up to 2.5 GB of my ram. I checked activity monitor and saw that I have 1GB of inactive memory but it never changes even if I have only 10MB active free memory. Is there any ...
4
votes
2answers
2k views
MacOSX cpu/mem monitor in system tray (menu bar)
I would like to monitor cpu/mem usage realtime with charts in MacOSX system tray (menu bar). Is there any utility that provide such functionality?
0
votes
2answers
317 views
My MacBook Pro uses an extraordinary amount of RAM
I bought my MacBook Pro about 1.5 years ago (with 4 GB RAM) but these days I think it uses an extraordinary amount of memory; when I open Firefox & Adium & Thunderbird & iTunes & ...
13
votes
4answers
5k views
What does it mean if I have lots of “Inactive” memory at the end of a work day?
After a day's of work at my MacBook Pro running Mac OS X 10.6.5, Activity Monitor shows that the majority of my computer's 8 GB of memory is "Inactive", and only a tiny sliver of the pie chart is ...
5
votes
3answers
8k views
Why can Mac OS X 32-bit access all 4GB of memory, while Windows 32-bit can't?
I don't understand why Mac OS X 32-bit kernel can access all 4GB of memory (and even more) while Windows 32-bit can only work with ~ 3,3 GB, and for using more than 4GB you need 64-bit Windows. Even ...
23
votes
2answers
8k views
What's the difference between Real, Virtual, Shared, and Private Memory?
The different columns in Activity Monitor are a little confusing
