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dmelgar

macrumors 68000
Original poster
Apr 29, 2005
1,589
168
I'm running SL, haven't rebooted in several days.
I have no desktop applications running.
I'm on a MBP 13" w 4GB RAM.

Activity monitor is reporting 2.21GB memory active, 908.5MB wired. 106MB free.

Most unusual, is that I do not see any application in Activity Monitor using much real memory, yet it reports 2.21 GB memory active. I have had as much as 1.4GB swap space used, with no obvious culprit.

Any idea where the memory is going?

Thanks
 
That's how OS X RAM management works. It caches your previously used data so that when you need it again its loaded much faster.
 
I too have been having problems with my RAM (Specs below, my macbook was built to order so i have not upgraded myself). Right now iStat Menu is reporting 247mb being used!!!!! and Safari is using a lot more than usual too, 219mb!!!/Users/Alex/Desktop/Screen shot 2009-09-06 at 10.14.54 PM.png
 

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That's how OS X RAM management works. It caches your previously used data so that when you need it again its loaded much faster.

Thats how its supposed to work for "inactive" memory, not "active" memory. Active memory is supposed to mean that someone is currently using that memory. With it swapping out 1.4GB, the system was crawling. Certainly not a good thing when there should be tons of free memory.
 
I too have been having problems with my RAM (Specs below, my macbook was built to order so i have not upgraded myself). Right now iStat Menu is reporting 247mb being used!!!!! and Safari is using a lot more than usual too, 219mb!!!/Users/Alex/Desktop/Screen shot 2009-09-06 at 10.14.54 PM.png

Doesn't sound unusual at all. Those numbers are small and typical or even on the low end.
 
Thats how its supposed to work for "inactive" memory, not "active" memory. Active memory is supposed to mean that someone is currently using that memory. With it swapping out 1.4GB, the system was crawling. Certainly not a good thing when there should be tons of free memory.

Well its also worth noting that almost every app that comes with Mac is now 64 bit and thus uses about twice as much RAM as their 32 bit predecessors.
 
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