Develop Bugs

[Q] Which custom ROM offers the best ram management?

Is there a particular rom which offers better ram management to allow for apps to stay in the memory longer, and cached apps get less priority?
I'm getting annoyed of apps that are suppose to be running all the time in the notification bar, but they are constantly restarting because the ram gets too low, but in fact, there is enough ram, but it's being taken up by cached apps instead!
Maybe I'm asking too much. Are there ROMS which:
1) offer more ram by being "trim"
2) manage memory better for multitasking
I really wanted to keep this phone stock, but this is pathetic! I feel that my old phone, with a "huge" 256mb ram chip was able to run more software in the background than my GN is! I've stripped all the useful apps off this phone and memory management is still an issue.

isn't the kernel responsible for that and not the rom?

zephiK said:
isn't the kernel responsible for that and not the rom?
Click to expand...
Click to collapse
Good question. I figured some roms are made lighter by removing stuff on it you don't need, and when it's done on a system level, I assumed that less ram would be needed for the os to operate.
Maybe someone can explain this?
Sent from my Galaxy Nexus using Tapatalk

I mean yeah, to a extent.. I'd believe that ROM and Kernel both contributes to it but kernel is the bigger player when it comes to optimizing "RAM."
I use AOKP + Franco Kernel if that helps. No lag problems, never even had it when it came to stock ICS. You'd might want to check your apps and see if there's a bad app causing memory leaks.

EP2008 said:
Is there a particular rom which offers better ram management to allow for apps to stay in the memory longer, and cached apps get less priority?
I'm getting annoyed of apps that are suppose to be running all the time in the notification bar, but they are constantly restarting because the ram gets too low, but in fact, there is enough ram, but it's being taken up by cached apps instead!
Maybe I'm asking too much. Are there ROMS which:
1) offer more ram by being "trim"
2) manage memory better for multitasking
I really wanted to keep this phone stock, but this is pathetic! I feel that my old phone, with a "huge" 256mb ram chip was able to run more software in the background than my GN is! I've stripped all the useful apps off this phone and memory management is still an issue.
Click to expand...
Click to collapse
AOKP and a few other roms have the option to change the minimum ram before android os starts killing background apps. The default is about 80MB I believe. You can decrease it (do not forget to check set on boot), but I do not think it is recommended to go too low.
If you are having low memory issues its probably because of a rogue app. Install System Tuner and check for background apps that use more than ~10-20MB of memory.

[MOD/EXPERIMENTAL] almost double your RAM

So, it turns out the /preload partition is 500 megs of almost unused space, just to show us a video of Asphalt. So, how about turning it into swap space to almost double the effective amount of memory you have? To use this mod, you must be rooted, and have busybox installed. I recommend the stericson busybox installer https://play.google.com/store/apps/details?id=stericson.busybox&hl=en
I would like feedback on whether or not it actually speeds up the device, especially when running graphics-intensive games, and also effects on battery life.
How to install:
1.Be rooted.
2. Get busybox. If you don't already have it, you can get it here https://play.google.com/store/apps/details?id=stericson.busybox&hl=en
3. You must have init.d support. This is built into my NardROM but you can also flash the file attached to this post.
4. Flash the script installer, attached below. NOTE: This will wipe your /preload partition. You can make a nandroid before you perform this step but CWMR doesn't back up /preload. Back up anyway
5. If it's successful, you will see something like the following screenshot when you open a terminal window and execute "free". Notice the swap being used. If you don't have swap enabled it will read 0 available.
To disable the mod:
1. Delete the script from /system/etc/init.d
2. Reflash your Asphalt video from a backup
To disable init.d:
1. Delete /system/etc/install-recovery.sh, /system/etc/init.d (entire folder), /system/bin/sysinit, and /system/xbin/run-parts
Disclaimers:
Using nand memory as a swap can significantly reduce its life. Your phone's internal memory will wear out in years rather than decades
A lot of people argue using Android swap works against the built in memory management of the Dalvik machine
http://forum.xda-developers.com/showthread.php?t=1504774

This is awesome, glad to see people spending time on this device
Tappin' Typin'

'' /vendor '' also has 590,56 Mbyte of space..
what kind of data is there? there are some folders called ''multi_pose_face_landmark_detectors.3'' and ''yaw_roll_face_detectors.3'' ? is this the carrierIQ stuff?
After deleting everything on that partition it says 395,95 mb used, 194,61 mb free.

ludacris1 said:
'' /vendor '' also has 590,56 Mbyte of space..
what kind of data is there? there are some folders called ''multi_pose_face_landmark_detectors.3'' and ''yaw_roll_face_detectors.3'' ? is this the carrierIQ stuff?
After deleting everything on that partition it says 395,95 mb used, 194,61 mb free.
Click to expand...
Click to collapse
I think it's device-specific info for face unlock to compensate for various things like the angle you're holding the phone at and the distance away from your face. And if you'll look a little more closely, you'll find /vendor is symlinked from /system/vendor, it's not actually a separate partition. You should probably put those files back if you want face unlock to work.

Technically I just downloaded some ram
Sent from my SGH-I927 using xda app-developers app On Ics

FYI, this could be a potential source of serious slowness. Swap isn't anywhere near as fast as real RAM.
I wouldn't do this unless you're legitimately having issues you can directly attribute to running out of RAM. It may be useful as Android marches on and demands more and more RAM but for ICS we're already a good clip above the recommended specs.

Same thing I was thinking. I have more than enough RAM but if by some miracle we get something past JB that uses a lot of RAM I'll do this. Nice work on it though!
sent from my captivate glide running ICS (NardROM 0.4 Rooted)

roothorick said:
FYI, this could be a potential source of serious slowness. Swap isn't anywhere near as fast as real RAM.
I wouldn't do this unless you're legitimately having issues you can directly attribute to running out of RAM. It may be useful as Android marches on and demands more and more RAM but for ICS we're already a good clip above the recommended specs.
Click to expand...
Click to collapse
Waiting for the comparison,then

mewatashiakumoi said:
Waiting for the comparison,then
Click to expand...
Click to collapse
So with this hack having been out a couple months now, how are the reviews? Performance increase? Fewer slow downs?

pm2gonzales said:
So with this hack having been out a couple months now, how are the reviews? Performance increase? Fewer slow downs?
Click to expand...
Click to collapse
1) this is not a hack, this is a simple tweak
2) swap file is ALWAYS has a performance decrease effect, no matter what (desktop PC, android phone). The only reason of use is when the device has no enough RAM, and the background processes shall be kept elsewhere
3) android has it's own RAM managing system and methods, simply stick to that as only that will gives you the best performance and user experience
4) "slowdown" occurs when the device runs out of free RAM and starts closing background applications to give everything to the foreground app. When you close the heavy resource use foreground app witch caused android to close every possible background apps, the phone reloads them (launcher, live wallpaper, app drawer, widgets, user apps, etc...) and this is what causes a temporary slowdown, and this is unavoidable, no matter if you use swap or not.

[Q] Out of RAM

Hi,
working daily with linux-OS and beeing actively using custom roms since Android 2.1 I have a bit of knowledge on RAM usage on Linux and Android. As many know and like to post "free RAM is wasted RAM" - we all know that. But why? Because all not actively used RAM (lets call it "free") can be used as a cache for applications you likely will need in future. But what if your GNEX runs out of free RAM an is not able to cache any more? What if you start a new huge application like your browser and free RAM has to be obtained to give it to your starting application? Yes - bad things can happen!
But lets start from the beginning:
1. If you go to Settings->Applications->Running you get the RAM-bar at the bottom of the screen. This is splitted in two parts: used and free (like defined above). Used RAM seems to be actively allocated RAM which cannot be used for other things like starting applications and free is the RAM which can be obtained because it only containes caches apps which are not running.
2. Directly above that bar you se a kind of brace which seems not to be just eye-candy but has some meaning: The lower and thiner part of that brace seems to show the part of that RAM (used or free) that is used by the applications/service in the list above. Example: if you switch to cached applications the brace will jump to that part of the bar and by killing some of the cached apps you will change the width of the brace.
Lets put things together:
viewing the used RAM you will notice that the brace does not cover the whole used-ram-bar but, in my case, about the half. I also noticed that the width of the brace does not change greatly with uptime of the device as all listed services will stay at their size more or less so their sum is not going to change greatly. In my case all services sum up to about 250MB meaning the braces width is about 1/3 of the screen assuming that GNEX has 700MB total RAM (the rest of 1GB total physical RAM is allocated to other parts of the SOC-chip like Baseband and GPU and not available to linux-kernel or android).
But one thing does change greatly!!! The part of the used-ram-bar which is not covered by the brace will be very small after rebooting and will grow with uptime. As the part covered by the brace is a fixed factor this means that the free ram is the trade-off for the growing uncovered part of the used-ram. In my case I get after rebooting the device: 250MB free, 450MB used of which 250 are covered by the brace, leaving 200MB used RAM for whatever (kernel, non-android stuff like filesystem caches, ideas?) After some days of usage this changes to 50MB free, 650MB used of which still about 250MB are covered by the brace, leaving 400MB used for other things (NOT app-cache).
Consequences:
From the assumptions above this means that android is not able to cache apps anymore (because they live in the free RAM) and my device beginns to lag while opening new apps. To obtain enough RAM for starting apps like browers (stock or firefox tested) it will even need to kill services!!! And in extreme low-memory situations it even kills the foreground app you are using (to me it happened while I used firefox). Also when you go to settings->applications->running again you will notice that android will be restarting your services over and over again to obtain more RAM without much success. In the situations my actively used firefox got killed something different happened: the launcher also had been killed because it was starting over but more importently settings->applications->running showed that much of the used RAM not covered by the brace was gone! Free RAM jumped from 50MB to about 200MB which is nearly what I get after a fresh reboot. I assume that in this extreme low memory situation also the kernel did clean up things.
From my observations you will get the following if your free RAM accoring to settings->applications->running is very low:
1. no cached apps if you swich to settings->applications->running->cached
2. laggy phone
3. your launcher gets killed more oftern when returning from e.g. browser
4. more apps get killed when returning to launcher meaning that they will get restarted if you return to that app
5. in low memory situations (app does not fit into free-RAM-part) services will get restarted frequently
6. in extreme low-memory situations kernel cleans up everything (i guess)
The question now is: what is using so much RAM and growing over uptime until our GNEX has no more free RAM? I alread checked different ROMs including stock 4.1.2, stock 4.2.2 slimbean 4.2.2 cm10-stable cm10.1-nightly and all of them show this behavior. The only thing I noticed: all 4.1 ROMS perform better in this area: their RAM does not fill up that quickly but it does. On 4.2 ROMs it takes just few days to run out of free RAM for me. I already wiped my device and installed only realy needed apps (20 out of 140!!!) but it still happens.

I think this happen in any OS
A daily reboot is always a must in my opinion, to free ram, to stop some services, to stop wake locks, to stop battery drain without sense..
Inviato dal mio Galaxy Nexus con Tapatalk 2

That's what always makes me ask : Is Gnex really have 1gb of memory?
Other phones with same spec. uses same OS have more than 693mb that in gnex , why the hell our phone has the lowest read ram in 1GB category phones
I'm sure this is the only weak-point in gnex

300MB is GPU reserved for camera.

madd0g said:
300MB is GPU reserved for camera.
Click to expand...
Click to collapse
Why?
Sent from my Galaxy Nexus using Tapatalk 2

I didn't engineer the device. But I presume it's a requirement by the GPU PowerVR chip, since it uses alot of RAM on the Nexus S, which had the same chip only downclocked. It was 330MB usable out of 512MB advertised there. The amount reserved is bigger on GN obviously because of HD video capture option.

madd0g said:
I didn't engineer the device. But I presume it's a requirement by the GPU PowerVR chip, since it uses alot of RAM on the Nexus S, which had the same chip only downclocked. It was 330MB usable out of 512MB advertised there. The amount reserved is bigger on GN obviously because of HD video capture option.
Click to expand...
Click to collapse
I agree GPU shared system RAM, but 300MB is wayy too much bro. I checked my N4 it has 1.82GB of 2GB total considering N4 Adreno and camera chip is more powerful than i9250

It's (again probably) not because of the speed/power etc. but that it's like that by design. Adreno ain't the same as the one used on GN, so there's no comparison.
I'm sure Google didn't allocate that much memory just to screw us up, but instead there's a legit need for it. For instance, the amount of RAM available on a Galaxy S2 is much bigger, around 830-850MB out of 1 GB and it has a completely different camera/GPU combo, spite full HD video and 8 mpix instead of GNs 5. That's why I presume it's just PowerVRs "fault".

Perhaps, i just checked galaxy tab 2 ics available ram, it less than 700, but after flashed stock JB, it shows more RAM, about 770MB. Tab 2 uses OMAP and PowerVR right? Imho. i just curious why it reserves so much ram. Searched google and can't found the reason :S
Sent from my Galaxy Nexus using Tapatalk 2

*Update*
An galaxy S2 with all stock (Android 4.1.2) shows the same amount of used RAM after 10 days of uptime (380MB free and 380MB used - a nearly perfect 50/50 ratio). No sign of degradation so far. Honestly this phone is not used much but still it feels very different from what I see on my Gnex.
Has someone shorlty fully wiped and reflashed his phone to stock 4.2.2 (JDQ39). How does the RAM usage look like after fresh reboot?

RAM problem
This is what i get today. Using liquidsmooth 2.4 fraco kernel. But i know its not abut apps i use. I dont know where are all that RAM. After reboot with same apps runing in background i have 230-260MB free RAM. But if i using phone day or so it look like this.
Phone get laggy, slow with high latency. Im not sure if its 4.2.2 bug for Gnex or just some mess with ROM but its same on any custom ROM. ill try flash stock and see what i get.

castaway1 said:
This is what i get today. Using liquidsmooth 2.4 fraco kernel. But i know its not abut apps i use. I dont know where are all that RAM. After reboot with same apps runing in background i have 230-260MB free RAM. But if i using phone day or so it look like this.
Phone get laggy, slow with high latency. Im not sure if its 4.2.2 bug for Gnex or just some mess with ROM but its same on any custom ROM. ill try flash stock and see what i get.
Click to expand...
Click to collapse
I'm experiencing the same problem with AXI0M and AK kernel.

castaway1 said:
This is what i get today. Using liquidsmooth 2.4 fraco kernel...
Click to expand...
Click to collapse
Hi, this is exaclty what i was talking about... very frequent service restarts and laggy phone and even basic things like keyboard and music-playback can quit while in use. While I tried to compose an email to send a screenshot to my desktop to post it here my stock-mail-app died and the phone rebooted. At least I have now both an after reboot and an after two days of using PARANOID ROM screenshot
I recently switches to PARANOID 3.55 and now have even more issues as the phone boots with just 200MB free RAM. This ROM seems to demand very much RAM.
BTW. I installed Stock for more than a week before switching to PARANOID and had around 260MB free after booting and around 150MB free after some days of usage. Increase was ways lower than on any custom rom. Can anyone comment on this? Same or contrary stock-experience?

Stock JDQ39 rooted. (running one week)
kernel stock or lean both are perfect and have no affect RAM or smoothness. Screenshot is after some days of full usage. Battery life i getting is about 1day with 2h screen on.
now someone tell me that its not custom ROM problem. 4.2.2 stock is just awesome. Im sad that custom ROMs not..

castaway1 said:
Stock JDQ39 rooted. (running one week)
kernel stock or lean both are perfect and have no affect RAM or smoothness. Screenshot is after some days of full usage. Battery life i getting is about 1day with 2h screen on.
now someone tell me that its not custom ROM problem. 4.2.2 stock is just awesome. Im sad that custom ROMs not..
Click to expand...
Click to collapse
2h screen time is really bad..
But nice to know that stock works well for you..

Mach3.2 said:
2h screen time is really bad..
But nice to know that stock works well for you..
Click to expand...
Click to collapse
its average +/- 30min and for me its not so bad for 24h

castaway1 said:
its average +/- 30min and for me its not so bad for 24h
Click to expand...
Click to collapse
As long as it makes your boat float, why not?
Beamed from my Grouper

castaway1 said:
Stock JDQ39 rooted. (running one week)...
Click to expand...
Click to collapse
Next step would be to deodex this ROM and to try again because Stock is odexed in contrast to any custom rom. I realy would like to figure out the reason for this bad RAM usage on custom roms.

fajabird said:
Next step would be to deodex this ROM and to try again because Stock is odexed in contrast to any custom rom. I realy would like to figure out the reason for this bad RAM usage on custom roms.
Click to expand...
Click to collapse
yes im on odexed rom. and im curious if deodexing some custom ROM will help with this. I think about slighty modified vanilla rascarlo ROM with kernel that work perfect lean 6.4 is smooth like stock and dont broke anything. Its deodexed rom so i can propably try THIS to odex it.
http://fitsnugly.euroskank.com/?rom=rasbeanjelly&device=maguro-vanilla

castaway1 said:
... im curious if deodexing some custom ROM will help with this...
Click to expand...
Click to collapse
I thing you ment odexing some custom ROM, right? I'm thinking about to try the odex-me apk you can find on XDA which will odex all apks from /system/app but leave the framework.jar stuff untouched. But its far more easy to deodex the stock ROM and to try again

Using a lot of RAM... for some reason?

Ok so I was running an app to check on CPU speeds (unrelated research) when I noticed that this same app was saying I only had 340mb of RAM free...
This seemed a bit strange, considering this tablet has 3GB of RAM on board, and I'm not really running anything at the moment.
I went into the storage setting page, and looked at running processes, and it says that I am using 2.5GB of my RAM.
but... if I add up all the ram usage on all the running processes, it only adds up to about 500mb....
So what is using up the other 2gb?
If anyone has any suggestions, it'd be nice, as at the moment it seems I only have 1gb of usable RAM in this device...
EDIT:
Nevermind, I think I solved it... sort of. I found that the ram clearing button is in a different place than I remember, and I have managed to clear out some more space... though even after a full reset 1.5gb of ram is immediately being used. Seems a lot.
Though this is a stock rom etc so I suspect thats normal.

electrical tcfpain
nirurin said:
Ok so I was running an app to check on CPU speeds (unrelated research) when I noticed that this same app was saying I only had 340mb of RAM free...
This seemed a bit strange, considering this tablet has 3GB of RAM on board, and I'm not really running anything at the moment.
I went into the storage setting page, and looked at running processes, and it says that I am using 2.5GB of my RAM.
but... if I add up all the ram usage on all the running processes, it only adds up to about 500mb....
So what is using up the other 2gb?
If anyone has any suggestions, it'd be nice, as at the moment it seems I only have 1gb of usable RAM in this device...
EDIT:
Nevermind, I think I solved it... sort of. I found that the ram clearing button is in a different place than I remember, and I have managed to clear out some more space... though even after a full reset 1.5gb of ram is immediately being used. Seems a lot.
Though this is a stock rom etc so I suspect thats normal.
Click to expand...
Click to collapse
You probably aren't using all 2.5GB for actual running programs.
Windows 7 does a great job of managing money. If it has any unused memory it will hold often used programs or data in memory in case it's needed. If a running program needs that memory it's quickly shifted. Otherwise when you reopen that program you recently closed, it may load quickly from memory rather than from the drive. I suspect Android does things similar.
Modern systems programmers consider "free" memory to be wasted, so they put it to the best use they can anticipate. That gives you the benefit of all memory as often as possible. If they only allowed the memory to be used for what's needed right now, your Note would only have about 1 GB memory, and would be considerably slower.
It's a little like having the cook wash your car while waiting three hours for the turkey to cook. You get both the turkey and the car wash.

jnichols2 said:
You probably aren't using all 2.5GB for actual running programs.
Windows 7 does a great job of managing money. If it has any unused memory it will hold often used programs or data in memory in case it's needed. If a running program needs that memory it's quickly shifted. Otherwise when you reopen that program you recently closed, it may load quickly from memory rather than from the drive. I suspect Android does things similar.
Modern systems programmers consider "free" memory to be wasted, so they put it to the best use they can anticipate. That gives you the benefit of all memory as often as possible. If they only allowed the memory to be used for what's needed right now, your Note would only have about 1 GB memory, and would be considerably slower.
It's a little like having the cook wash your car while waiting three hours for the turkey to cook. You get both the turkey and the car wash.
Click to expand...
Click to collapse
I'm guessing you mean android, not windows 7
Though I imagine both do the same thing lol

nirurin said:
I'm guessing you mean android, not windows 7
Though I imagine both do the same thing lol
Click to expand...
Click to collapse
I used Windows 7 as an example because I know how it works. Like you, I imagine Android 4.3 does the same thing.

I was wondering about this as well. On my Note 2, when I clean the ram, it will go to 480-500 / 1.75g on this tab, ext I could get is 1.33/2.75.......
I went through and turned off a lot of the apps, it helped free up a little bit.
Does anyone have a list of the apps that are safe to turn off?
:beer:
Sent from my SM-P600 using Xparent Cyan Tapatalk 2

I have LTE version with Snapdragon and when I start the tablet, it uses about 890MB of 2,35GB available (yes, it has 3GB RAM, but graphic processor uses some of this RAM)... When it loads all apps to RAM (about 50 of them, we know android do this) and I start few apps(FB, Gmail, Chrome, Hangouts for example), I still use only about 1,3GB of RAM... So almost 1GB is still free

In Android having too much free ram is not a good thing. Let your apps use it, you don't have to worry about not having enough ram, OS manages it well for you.

ddavtian said:
In Android having too much free ram is not a good thing. Let your apps use it, you don't have to worry about not having enough ram, OS manages it well for you.
Click to expand...
Click to collapse
+1
Android is a mobile OS which means that it can backup and restore not needed apps if necessary and the 3GB are only the runtime memory beside this it can use the whole internal memory for "running" apps. So long Android got enough memory it holds all apps in memory which speed up the whole device. Therefore it is positive that the Note use his whole 3GB memory and don't think that killing apps or free memory will be a good idea. It will slow your device and produce lags.

ddavtian said:
In Android having too much free ram is not a good thing. Let your apps use it, you don't have to worry about not having enough ram, OS manages it well for you.
Click to expand...
Click to collapse
Elim said:
+1
Android is a mobile OS which means that it can backup and restore not needed apps if necessary and the 3GB are only the runtime memory beside this it can use the whole internal memory for "running" apps. So long Android got enough memory it holds all apps in memory which speed up the whole device. Therefore it is positive that the Note use his whole 3GB memory and don't think that killing apps or free memory will be a good idea. It will slow your device and produce lags.
Click to expand...
Click to collapse
They are both right. Android is based on linux. Linux uses ram very effectively to cache apps and data to speed up your system. When something needs ram it removes a different app or data from the ram to keep moving. It works totally different from Windows. Check out this article.
http://www.androidcentral.com/ram-what-it-how-its-used-and-why-you-shouldnt-care

Every day since Android came out someone asks this question somewhere... Is Google offline?
Sent from my SM-P605 using XDA Premium HD app

If you want to change how your ram is managed, and you have root, you can use the v6 supercharger or a simple minfree setting app. V6 is in the developer section of the general android forum on this site. I've found that m ram fills up from cached apps. V6 will let you auto clear however often you want.

What is eating all the S6 edge memory?

My last phone, the G3, has 3 GB of RAM. The G3 runs Lollipop perfectly. The S6 edge has 3 GB of RAM and there's never any of it. I understand that there's a very aggressive low memory killer but it is ridiculous that a top of the line phone needs to reclaim my podcast app or Audible while they're playing. There should be a ton of free memory and a ton of cached apps in it but the memory is full and there is nothing cached. I've never been so frustrated with a phone. I spend a lot of time sighing at it when it does something stupid. Anyway, if anyone knows where this mysterious memory is being used, please chime in.

There are suspicions that it could be related to the touchwiz launcher, try a different launcher just for the heck of it and see how it goes.
Pp.

gunslingerfry said:
My last phone, the G3, has 3 GB of RAM. The G3 runs Lollipop perfectly. The S6 edge has 3 GB of RAM and there's never any of it. I understand that there's a very aggressive low memory killer but it is ridiculous that a top of the line phone needs to reclaim my podcast app or Audible while they're playing. There should be a ton of free memory and a ton of cached apps in it but the memory is full and there is nothing cached. I've never been so frustrated with a phone. I spend a lot of time sighing at it when it does something stupid. Anyway, if anyone knows where this mysterious memory is being used, please chime in.
Click to expand...
Click to collapse
Hi gunslingerfry,
I was just reading about this on forbes. Here is what their author says to explain the poor memory usage and how to fix it "What should happen is RAM used by apps and services is released when those apps and services are not in use. Instead it is not being released which means each new app or service has to eat into additional memory until there is no more available, at which point the slowdowns and crashes begin.
The only half solutions at present are a) to hit the ‘Close All’ button in the multitasking card menu to dismiss all apps to try and claw some memory back, or b) to reboot the device. Interestingly the latter is expected to have helped keep the issue under the radar in reviews as performance testing is always done from a fresh boot."
So it sounds like you are sort of out of luck for now, but I am sure there will be some update that fixes the issue shortly.

I'm experiencing this myself but apps that I reopen from the multitask window have to reload and I lose where I was previously.. Very annoying to say the least.
Sent from my SM-G925T using Tapatalk

PanchoPlanet said:
There are suspicions that it could be related to the touchwiz launcher, try a different launcher just for the heck of it and see how it goes.
Pp.
Click to expand...
Click to collapse
I never use the TW launcher because I don't enjoy using it. I use Action Launcher. It's very lightweight.
Goldmeyer said:
Hi gunslingerfry,
I was just reading about this on forbes. Here is what their author says to explain the poor memory usage and how to fix it "What should happen is RAM used by apps and services is released when those apps and services are not in use. Instead it is not being released which means each new app or service has to eat into additional memory until there is no more available, at which point the slowdowns and crashes begin.
The only half solutions at present are a) to hit the ‘Close All’ button in the multitasking card menu to dismiss all apps to try and claw some memory back, or b) to reboot the device. Interestingly the latter is expected to have helped keep the issue under the radar in reviews as performance testing is always done from a fresh boot."
So it sounds like you are sort of out of luck for now, but I am sure there will be some update that fixes the issue shortly.
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Goldmeyer, this doesn't explain why it's 75% utilized on boot but with no running apps (according to the smart manager app). I've tried the build.prop tweaks posted around here and there is a significant difference. Smart manager reports there are dozens of apps being pre-loaded on boot (which is normal, this is what we want!) but with the same 75% utilized. Those tweaks tended to lag the device after a couple hours, which may be a manifestation of what the Forbes article is referring to. So I guess the thing I don't get, and maybe a better understanding of what the dha/lmk values that are being tweaked would help, is what is currently allocating all that excess memory? Is TW just allocating ridiculous amounts of memory to make sure it runs smoothly? Is Android hoarding it for its own uses? And if so, how can any device with less than 3 GB of ram possibly function on Lollipop?
On a much more technical note, I understand that running 64 bit means using a little more ram. Addresses are twice the size and integers will be twice the size but that doesn't explain 2.3 GB. It shouldn't be loading the entire system partition into ram.