0
votes
1answer
64 views

Inactive memory vs swapping

I'm trying to process a large dataset in java, and so I set my -Xmx11G. 1 thing I observed is, when I use xmx and the Jvm starts, the amount of inactive memory jumps up by about that much. Later, I ...
7
votes
1answer
2k views

vm_compressor_mode (vm.compressor_mode) values for enabled compressed memory in OS X

Background In Super user, with an accepted answer: Disable compressed memory in Mac OS 10.9 Mavericks? Also in Super User: how to get memory compress back in Mac OS 10.9 Mavericks? – and ...
1
vote
4answers
8k views

I run out of RAM on a 8GB MacBook Pro 15"

I'm a designer using Snow Leopard on a MacBook Pro 15" (i7) with 8GB Ram, 500GB (180GB free) (2010 model). I usually use Chrome (4/5 tabs), Firefox (1/2 tabs), Skype, VM Ware Fusion (with Win XP, ...
2
votes
3answers
899 views

Would Upgrading to 16GB RAM be Beneficial?

I'm running on an i3 processor, 2010 model, 3.06 GHz. I'm currently have 4GB of RAM, but if I were to upgrade to 16GB, would: Applications open quicker? FPS increase in game? Overall performance ...
4
votes
1answer
2k 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 ...
8
votes
3answers
6k 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 ...
2
votes
0answers
85 views

iOS Memory Mangement Technique

I was wondering what kind of technique does iOS use? Single contiguous allocation Partitioned allocation Paged memory mangement Segmented memory mangement I believe it is partitioned allocation, but ...
6
votes
1answer
1k views

Why does OS X use virtual memory when I still have free RAM?

I have this awesome MacBook Pro with 8 GB of RAM. When I open up Activity Monitor it would seem that I have plenty of RAM available, but my computer seems to prefer to use virtual memory for many ...
6
votes
2answers
3k 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: ...
2
votes
2answers
2k views

When will Finder use large amount of memory?

Sometimes I see the iMac with 4GB of RAM having a few MB of swap file only, and after I left for a few hours and come back, the swap file is 2.7GB. Looking into the Activities Monitor, the Finder is ...
9
votes
1answer
3k views

Why is it that my Mac would rather swap than clear inactive memory?

Why is it that my Mac (running 10.8 Mountain Lion) 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 ...
4
votes
3answers
2k views

OS X Lion behaving oddly after upgrading to 16GB RAM

Just upgraded Early 2011 Macbook Pro w/ 4GB RAM to 16GB RAM. System now sometimes runs smoothly and other times pauses frequently. Terminal keeps giving me 'System is low on disk space/memory' ...
0
votes
1answer
77 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 ...
3
votes
2answers
665 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 ...
1
vote
3answers
240 views

Will I see performance boost if I add memory with these Page-In/Page-Out statistics?

Currently, if I open Photoshop after a days time, the load up time is about 5 seconds. If I close and open again (right after), the load up time is about 2 seconds (I assume this is caching?). Can ...
6
votes
4answers
19k 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 ...
1
vote
1answer
140 views

Hard drive on latest macbook pro 17 accessed too often

I have the latest macbook pro 17 and it seems no matter what I do, particularly noticeable when I simply scroll up and down on a window, I hear the hard drive tapping away like it's being accessed or ...
7
votes
2answers
744 views

How can virtual memory be greater than the total available space?

Why does my MBP sometimes report VM Size: 300+ GB in Activity Monitor under System Memory tab, when my hard disk size is only 250 GB (total) and RAM is 4GB? I know it can't magically get that extra ...
4
votes
4answers
560 views

Does it make sense to Quit apps before Sleep?

Will quitting (Cmd+Q) large apps before closing the MacBook lid make getting up and running again faster? I have the impression that my MacBook needs more time to recover from sleep if I have large, ...
8
votes
2answers
1k 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 ...
17
votes
5answers
9k 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 ...
9
votes
4answers
8k views

Safari is using too much RAM. How can I reduce its memory footprint?

I'm finding Safari (Latest - v5.0.2) to be even more of a memory hog than usual. (Currently using 465mb of RAM with only this tab open, but having been running for a while) Closing it and ...