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Hello,

 

After I updated my MBP to 10.5.1 I see it's using much more memory than the original version. If I run just a few programs continuosly all day the system is using more and more active memory. It looks like it's not releasing memory even after I shut down all the programs.

Anyone noticed the same behaviour ?

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i agree with u on this matter... after a whole day's worth of surfing around, watching videos and jus doing day to day routine, i chalk up a total of 1.5Gb worth of ram usage.... when i quit all of them, it drops only to about 900mb....

it is using about 1.34 gb on mine with mail, safari and itunes going. that seems a bit high. my system does seem to run more smoothly then it did in tiger tho

In Vista at the moment, I have 1MiB of RAM that's actually free on a machine with 4GiB. Of course, more than 3GiB is cached. That RAM is used to make apps launch faster and for other background optimisations. The memory management in modern OSes tends to scare users, but remember, if a program needs RAM, it'll get it. I wouldn't worry about it.

um, this has been going on since mac os x 10.0, its how the OS works and always has. if you're concerned about certain apps caching too much data then simply quit them and restart them. it makes no sense for apps to not cache everything you do or might need into RAM instead of trying to load from a page file on the drive or even in real time from a hard drive.

 

this is exactly why OSX is good and gets better with the more RAM you throw at it. don't confuse this as some sort of bug or error, and if an application needs more RAM, it will put the unused cache data to virtual memory on the drive for later use so that you're actual applications get the needed memory.

Actually, i did a comparison between the two operating system in term of ram usage.... in Tiger, my startup ram usage hits low 200mb, which is around 210mb or so....

 

In leopard, my startup ram usage is around 350mb.... the lowest ever i hit was 295mb.... the number of icons, wallpaper, addons and dock icons were 100 identical.... all the same stuff i used in tiger was used in leopard....

 

usage wise, i modelled exactly the same things i did on my tiger system, which is watching online video, checking my mail, surfing on apple news websites and IM, runing adium and running torrents... in Tiger, all these things take about less than 1Gb of ram, approx 800-900 average.... In leopard, the average now is 1.3Gb.... jus doing simple stuff... after i close the programs, the restart time difference of the programs were too small to notice....

Are you guys considering inactive memory as free memory too?

 

Yes I am considering inactive as free. And the problem is :

 

1. Even if I close all the programs, active memory doesn't seem to go as inactive (but it should).

2. I get many pageouts in VM statistics which is very worrying when You have no programs opened !!!

 

And no, those two points mentioned above are not "just like any other UNIX OS".

 

My guess - it is a bug big like NYC.

 

10.5 was using more RAM than Tiger but there was no such a behaviour.

 

P.S. I am not using Safari - this thing is the most memory hungry program I have ever seen.

I used a calculator to see exactly how much Real Memory was being used because Leopard has been acting odd lately. Every night if I use VLC to watch an avi before long the swap mem goes from 0/64MB to 500+MB/1 GB in under an hour som e times.

 

 

 

Total MB's when added (Real Memory) - 571.35 MB

Total KB's when added (Real Memory) - 8128 KB (7.94 MB)

 

Total "Real" Memory being used (according to Activity Monitor) - 579.29

 

Total "Active" and "wired" Memory recorded (according to Activity Monitor) - 1.38 GB

 

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The one who seems they would have this problem the worst doesn't have it at all. I have 1 GB, 570 MB free with all these apps running and XP running in VMWare.

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damn!

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