Yosemite using incredible amounts of RAM

patrickgc

macrumors newbie
Original poster
Sep 15, 2014
4
0
Hello guys.

Some days ago i decided to download OSX yosemite, and it worked really well for a couple of days, no problems at all, running smooth. But now i have come to a problem. OSX Yosemite is REALLY slow and unresponsive, a simple task can take from 0,5 second to 20 seconds. Sometimes the computer just go unresponsive, and everything takes ages.

It's really a problem when the computer is trying to manage new tasks, but when im for example is watching a movie, there is no problem at all. Often just to open a new tab or writing text in word can take ages.

I tried launching the Activity monitor, and i often use 3,99 GB of my 4 GB ram, and minimum always running with 3 GB usage.

I really want this problem solved, as i like Yosemite, and im not a quitter, just havent been able to find a solution my self yet. Tried repairing discpermissions, uninstalling Parallels Access via terminal and other things.

I have a 2010 Macbook Pro 15,4 inch 2,53 GHz i5
 

ABC5S

Suspended
Sep 10, 2013
3,395
1,646
Florida
Check your memory pressure shown below in Activity Monitor. If its green your memory is not the issue. Memory is being used differently than on older OS's. Yosemite is still in Beta so one will have to allow for some hick-ups until its released..
 

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patrickgc

macrumors newbie
Original poster
Sep 15, 2014
4
0
Check your memory pressure shown below in Activity Monitor. If its green your memory is not the issue. Memory is being used differently than on older OS's. Yosemite is still in Beta so one will have to allow for some hick-ups until its released..

Well, the graph is totally green, so that might not be the cause then, any suggestions?
 

jimmyco2008

macrumors regular
Jan 8, 2014
188
7
When you first boot into Yosemite, with NO applications open, you should be using about 950MB of Memory (Wired). Generally, though, OS X uses ALL the available RAM, or just about, for things like App Memory and File Cache.

There's a reason Apple upped the minimum RAM amount in rMBPs recently to 8GB, though, so to a degree I'm sure you'll have to be "careful" about how many apps you have open.
 

dndandrea

macrumors 6502
Feb 10, 2010
265
0
Wow. I have mail, safari, and iMessages running...

and I'm using 7.49GB of ram????

8GB-16GB used to be overkill, now it's starting to become the minimum.
 

Paradoxally

macrumors 68000
Feb 4, 2011
1,646
2,081
Wow. I have mail, safari, and iMessages running...

and I'm using 7.49GB of ram????

8GB-16GB used to be overkill, now it's starting to become the minimum.
Do you have an SSD? I have 8 GB and with a ton of programs open I still have about 3.65 GB free. With my old Mac that had an HDD it would frequently use up all the RAM even with not many programs open.
 

dndandrea

macrumors 6502
Feb 10, 2010
265
0
Do you have an SSD? I have 8 GB and with a ton of programs open I still have about 3.65 GB free. With my old Mac that had an HDD it would frequently use up all the RAM even with not many programs open.
Yes, I have the original 15" MBP retina. It's fluctuating between 7.49GB and 7.97GB. This is insane.

Might be a stupid question, but does using up all your ram have any toll on the ram's lifespan or other affects on the computer?
 

crjackson2134

macrumors 601
Mar 6, 2013
4,736
1,872
Charlotte, NC
Do you have an SSD? I have 8 GB and with a ton of programs open I still have about 3.65 GB free. With my old Mac that had an HDD it would frequently use up all the RAM even with not many programs open.
Are you saying the OS uses memory differently based on the type of storage attached? Just curious.
 

dndandrea

macrumors 6502
Feb 10, 2010
265
0
It's still around 6.5GB after I close all of my applications (mail, safari, iMessages). Something's not right.

edit: restarted computer. Now it's steady around 5.75GB with Mail, Safari, and iMessages open. Seems better, still slightly high though.
 

deadmantyping

macrumors newbie
Nov 19, 2010
3
0
I had a similar problem right after upgrading to PB2 where every application would take forever to launch and it felt like I was running out of memory even though the memory pressure was low.

For me, it actually turned out to be coreduetd. It doesn't use a lot of cpu or memory, but it was very I/O intensive.

In my case, /var/db/CoreDuet/coreduetd.db was huge (~9GB when I caught it iirc). I deleted all of the files inside /var/db/CoreDuet and restarted and haven't had the problem since. I have never really found a satisfactory explanation for what it was doing. From some searching, I believe it is somehow related to Notifications, which all seemed to continue to work fine after I emptied that folder. It has been about a month now and my coreduetd.db is still under 1MB. It also seems to continue to work fine after yesterday's upgrade to PB3.
 

cjmillsnun

macrumors 68020
Aug 28, 2009
2,399
46
Guys, this is normal behaviour.

It's how the OS is designed to work, and something that was in Mavericks.

You will find open applications and the OS will use almost all the available RAM. Don't worry about.

Opening more apps will result in that memory being reallocated so the app that needs the most, gets it. What you need to worry about is memory pressure.

When that is green, everything is fine.
 

thisaintrbight

macrumors newbie
Oct 7, 2015
1
0
Hello guys.

Some days ago i decided to download OSX yosemite, and it worked really well for a couple of days, no problems at all, running smooth. But now i have come to a problem. OSX Yosemite is REALLY slow and unresponsive, a simple task can take from 0,5 second to 20 seconds. Sometimes the computer just go unresponsive, and everything takes ages.

It's really a problem when the computer is trying to manage new tasks, but when im for example is watching a movie, there is no problem at all. Often just to open a new tab or writing text in word can take ages.

I tried launching the Activity monitor, and i often use 3,99 GB of my 4 GB ram, and minimum always running with 3 GB usage.

I really want this problem solved, as i like Yosemite, and im not a quitter, just havent been able to find a solution my self yet. Tried repairing discpermissions, uninstalling Parallels Access via terminal and other things.

I have a 2010 Macbook Pro 15,4 inch 2,53 GHz i5
  1. In the Finder menu choose Go -> Go to Folder…
  2. Type: “/var/db/coreduet
  3. Delete everything in that folder
  4. Restart
This will solve it. Easy fix.
I have same model and it worked for me after using 97% of my CPU.
Just delete the whole folder and restart your computer.
 
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