Develop Bugs

Is it possible, to have much more RAM available in Roms

A year of 7 ago I owned an IPAQ 3780. On that device you could change the amount of memory and storage. More memory and less storage or otherwise.
According to the HTC website, the HTC diamond has:
ROM: 256 MB
RAM: 192 MB DDR SDRAM
Internal storage: 4 GB
Most roms with TF3D enabled have around 60MB ram left after booting.
Still it makes me wonder why we can't change that amount by making the internal storage smaller and add it to the memory. The device comes with a 4GB internal storage, so what is the point of having a large 'standard' storage. It is not that difficult to move pointers to 'my documents' to 'internal storage\my documents' etc.
But asking this, i think Rom builders already know there is a reason why the RAM can't be enlarged.
Please enlight me with the answer or start discussing how to build such a rom.

That's impossible, absolute different technologies in RAM and storage.. And btw, 64MB of RAM is used for video acceleration, and 60MB goes to Windows Mobile..

In your old Ipaq storage and memory were the same. When the battery was empty all your data was lost. Only the os was kept in the rom. Since Windows Mobile 5 all your saved data is in the rom - and cannot be lost when the battery is empty.
so you can not enlarge the rom by decreasing the ram - its completely different hardware.

Yep, those were the days of WM3 where that was an option to the end user. Even if such an option existed today, how many would actually subtracted the storage for more ram? Well, every user is different. The way I use Ram vs. Rom on this device is basically straight down the middle.
To each is own! The trick here is to work with what we have. I think we aren't doing to bad at all!

charlie42 said:
That's impossible, absolute different technologies in RAM and storage.. And btw, 64MB of RAM is used for video acceleration, and 60MB goes to Windows Mobile..
Click to expand...
Click to collapse
Oke, that answers it.
Though 64MB for video acceleration is a huge buffer for this 640*480 pixels screen. Stealing memory there?

xavalon said:
Oke, that answers it.
Though 64MB for video acceleration is a huge buffer for this 640*480 pixels screen. Stealing memory there?
Click to expand...
Click to collapse
Kindly check this thread:
http://forum.xda-developers.com/showthread.php?t=402747

creating the "personal data" partition in sdcard instead of ram

Is it possible? i beieve the personal data partition which is 127 Mb takes place in the physical ram and it causes that we have only 300 and something Mb of ram for users.. since it s mostly taken by android apps users have about 120-150 mb of ram.. even galaxy tab with froyo has 444Mb.. so i thoght that 127 Mb part could maybe be created in sd card instead of ram.. it would be slower of course but with ext4 convertion this slowness could be ignored with the huge amount of free ram in my guess..
so is there a way to do that? or is there any unlogical part? because i really want to know why i cant use my whole ram for user (after switching to touchwiz 4and filling the screens with widgets the phone got really slower with freezes some times.. so it made me think about that)

Sounds like an awesome idea if someone knows how to pull it off

_delice_doluca_ said:
Is it possible? i beieve the personal data partition which is 127 Mb takes place in the physical ram and it causes that we have only 300 and something Mb of ram for users.. since it s mostly taken by android apps users have about 120-150 mb of ram.. even galaxy tab with froyo has 444Mb.. so i thoght that 127 Mb part could maybe be created in sd card instead of ram.. it would be slower of course but with ext4 convertion this slowness could be ignored with the huge amount of free ram in my guess..
so is there a way to do that? or is there any unlogical part? because i really want to know why i cant use my whole ram for user (after switching to touchwiz 4and filling the screens with widgets the phone got really slower with freezes some times.. so it made me think about that)
Click to expand...
Click to collapse
There is no personal data partition in RAM.
What you see in missing RAM is what is reserved for the kernel. He needs RAM to manage the system. And some RAM is reserved for special purpose (by device drivers), like video recording etc. That is why you see only 330 MB as maximum free RAM.

it might not be a perfect idea because the sd card partitition is so slower than RAM .. so moving dbdata (personel data) to there would slow it down ..
but i have just looked at a samsung galaxy tab again and realised it has 489 Mb of user avaiable memory out of 512 MB (with the turkcell turkish rom).. so it made me wonder what that 127 Mb part which exists in galaxy s but does not in galaxy tab is.. because i have read that personal data makes the device make/recieve calls and mesages.. i dont think so because galaxy tab also can do that without sacrofising 160-170 Mb of memory..

thanks for the asnwer.. so what exactly is inside of this missing RAM part? as far as i know to record video it needs the cache memory.. its something like 30 Mb.. thats ok.. and samsung galaxy tab is also missing nearly that amount.. but this 160 Mb is too much for only a kernel i guess? kernels are like 6 mb..
and why galaxy tab does not need to sacrofise such amount of memory? because they share the same ram, CPU and GPU.. so pysically they are same but why are their structures different..

I believe the Tab has actually more physical memory available than the SGS. If I remember correctly it actually has more than 512mb of ram and so the available ram is higher than in the SGS. Its possible they didn't advertise it because it would simply make it look like they made something wrong with the SGS architecture or advertisement.

i never thought it like that.. maybe..
but in every source i can find it says both have 512 Mb of memory.. so if samsung is not lying (i guess if they did someoe would find it out and spread the news) galaxy s has a software disadvantage.. besides we all know some kernels are expanding the memory from a few Mbs to 10Mb.. maybe there is a way to exapnd it even more without harming the working of the phone..
or maybe there is a way to make an entire new software and partitition structure (which reminds me of cyanogen mod, how much memory it gives to the user?) ..

i found this ;
"the samsung rom uses a ram disk for the os. that's not necessary. putting the OS on "disk" will free up a lot of ram. "
so i believe this software related situaton could be fixed (at least some of the ram could be saved) ?

I think there's a reason samsung didn't put the OS on the "disk".
Ram is lots faster than the internal SD card, so I think it would only slow the device down.
My little brother has a HTC Sensation, which has ~750MB of ram, but only 5xx is usable.
So i think it wouldn't be possible to have that much free ram...

i have checked.. in HTCs web page it says HTC Sensation has 768Mb of ram .. and samsung says both galaxy s and galaxy tab have 512 Mb of ram..
i assume everyone is saying the amount of the ram including the shared parts..
and i assume they all create their roms and kernels based on google sources..
so what is the reason of the difference between the ram amounts of galaxy s and galaxy tab? kernel needings can not be so much different.. they have lots of things in common...

i came back to stock rom (odexed) with stock UI and filled the screen with as much as widgets i could... then i tried everything to get it frozen but i couldnt even slow it down...
for the first time i felt like some hardware in my galaxy s was not enough after i installed touchwiz 4 with other sgsII apps (like e-mail, weather widget etc..) .. and i could not believe a UI could cause lagging (even freezing) ..
then i realised that galaxy tab had much more available ram.. i am still kind of obssessed about this and really wonder if this is possible..

http://forum.xda-developers.com/showpost.php?p=8587641&postcount=75
Like I said before, the Tab has actually 640mb of physical ram, more than the 512mb on the SGS. I'm guessing there really is nothing more we can do right now. Read up on the link I posted. If you want you can also read the whole thread that post comes from. There is lots of Dev talk on the subject.

i read all of them.. and it encouraged me to write and e-mail to samsung.. every source i can find says both deviced have 512 mb of ram.. (please nobady say samsung does not have to tell how much of the ram will be available for users, its like announcing an 1ghz cpu with a software which only forces it to work at 800Mhz) ..

[Q] New Note low storage

O.K. I didn't go for the mid level or high level storage unit, I went with the 16GB as with my Acer A500 on ICS had 16GB with 9-10GB free.
I power on my new Note and my apps start to load up from Google Play, and i start getting a message that only 2.9 - 2.8- 2.6 GB of internal storage left.
I checked the 16GB of space and what do i find,
System memory: 4.21 (OS right?)
Used Space: 8.33GB
Cached: 409MB
Misc: 800MB
and only 2.28GB avaliable!!!!
Is this because of JB? I just never though Android would ever catch up to space requirements of windows OS'.
If anyone can give me a few suggestion on how to lower this usage I would appreciate it, as i do have about 7-8GB of music i would normally carry directly on my device.

Sd card
Sent from my SM-P600 using XDA Premium 4 mobile app

Yes get an SD card and move the music to it. Also make sure all photos are going to the external card.
Use lecture notes instead of snote and make sure it is using the external card.
Sent from the tiny keyboard on my S4

LazySmerf said:
O.K. I didn't go for the mid level or high level storage unit, I went with the 16GB as with my Acer A500 on ICS had 16GB with 9-10GB free.
I power on my new Note and my apps start to load up from Google Play, and i start getting a message that only 2.9 - 2.8- 2.6 GB of internal storage left.
I checked the 16GB of space and what do i find,
System memory: 4.21 (OS right?)
Used Space: 8.33GB
Cached: 409MB
Misc: 800MB
and only 2.28GB avaliable!!!!
Is this because of JB? I just never though Android would ever catch up to space requirements of windows OS'.
If anyone can give me a few suggestion on how to lower this usage I would appreciate it, as i do have about 7-8GB of music i would normally carry directly on my device.
Click to expand...
Click to collapse
Search for foldermount. You can mount ext sdcard directories as internal. Problem solved. You must be rooted...
Inviato dal mio SM-P605 con Tapatalk 4

I have already ordered a 64G card, was planning to use it just for music. However the question still remains, is this JB thats so large or is it Samsung?
I look at my S3 running 4.1.2 (Stock OTA) its a 16GB device also, and it stands like this:
Total: 11.95GB
App: 2.01GB
Pic, Vid: 1.28GB
Audio: 83.84MB
Downloads: 2.75MB
Misc: 138MB
Avaliable Space: 7.96GB
So it leads me to believe its alot of bloat from Sammy for the Note devices.

LazySmerf said:
I have already ordered a 64G card, was planning to use it just for music. However the question still remains, is this JB thats so large or is it Samsung?
I look at my S3 running 4.1.2 (Stock OTA) its a 16GB device also, and it stands like this:
Total: 11.95GB
App: 2.01GB
Pic, Vid: 1.28GB
Audio: 83.84MB
Downloads: 2.75MB
Misc: 138MB
Avaliable Space: 7.96GB
So it leads me to believe its alot of bloat from Sammy for the Note devices.
Click to expand...
Click to collapse
It's both. JB is relatively huge, and Samsung adds about 1GB of their own apps including s-pen support, etc..
Even my 16GB only had like 12 GB free right out of the box.
Your expectations are a bit strange, even your S3 example above, shows that just the OS alone takes about 4.1 GB.

A simple comparative for 4 roms [OCT][CM13][AOKP][RR]

Hi there.... i have been testing and trying some roms. I am trying to compare ONLY RAM-HDD usage, i would like to make some bench and some about the battery life, but it is too large...
My model was:
Install ROM + NANO GAPPS
install some apps for a dialy use (line, telegram, malmath, mathsapp, opera mini, tigo shop, "root uninstaller", WPS, fiinote, keymonk, mega, sd insight, and finally T UI).}
uninstall all the "useless apps", i mean, those that i guess that really does not give anything. All about the wallpapers, google play app and services, google sync, etc. Having a minimal functional rom. Even uninstalled the default launcher of every rom and changed it for t ui in evey case.
Closing all apps and rebooting the phone, what i got was
FOR CM ROM: (i did not got ROOT by default)
HDD usage 872 MB
RAM T UI 952 MB
RAM android 793 MB
FOR RR ROM:
HDD usage 3.87 GB
RAM T UI 1003 MB
RAM android 749 MB
FOR AOKP ROM:
HDD usage 1.17GB
RAM T UI 1005 MB
RAM android 807 MB
FOR OCT ROM:
HDD usage 1.26 GB
RAM T UI 1005
RAM android 684
The RR HDD usage is really big, i am not sure why... there is a 200MB difference between the t ui ram and android ram shown.
AOKP, RR and CM all of them are kinda the same with almost the same things. About OCT... it has not so much thing, i mean, some apps that i saw in the other are not in oct, ex. audio FX
Finally, who got the bigger aparently better perfomance was AOKP, with a decent HDD usage, pretty high ram used in t ui and higher ram in android.
I would like to ask... what do you think? what was the best rom for you and why? (perfomance pls, the aparience does not worth a ...)

Android Car Mirror Q6 insufficient storage

Hi
I bough android rear view mirror with below config.
System: Android 4.4.2, Allwinner A33 Quad core CPU, 4 ARM Cortex TM A7 CPUs.
2. RAM: 1GB RAM DDR3.
3. ROM: Built-in 16GB internal disk, can support up to 32GB Micro SD Card.
4. 7 inch big screen can split into two display. 5-points capacitive touch screen, clear, sensitive slight touch.
But thing is i cannot install apps to device its says insufficient storage available. it has three storage 300mb , 16 gb internal and 32 gb SD card. normally app goes 300mb location.
SO i want to install apps to second internal storage 16gb but how i do it. sorry for bad english.
Thank you

I had some success by installing uninstaller.app.
I used uninstaller to remove and freeze some unwanted apps and this allowed me to install a few of my favorites. Still space is very limited.

Try contacting your seller. They may be able to provide you a firmware that increases the system storage where the apps are installed.
However if your mirror is 512mb then unfortunately that's all you're going to get out of it.
You may need a mirror like this one to avoid that problem:
https://youtu.be/fW_PavSv91k
Good Luck!