Develop Bugs

rom with 192Mb RAM/// Why not?

Last many time but anybody and couldn't activate 32Мб RAM which locked in our devices. Why? If we had these 32Мб then it would be possible to use Sense 2,5 and windows 6,5. It is assured to that developer which will unlock RAM the people it will be grateful and will sacrifice some money

The reason that you cannot use all the ram is that 32mb is reserved for the graphics chip.
Edit: Sorry, etoy is right, my mistake, it is 64mb for the graphics chip

tomascivinod said:
The reason that you cannot use all the ram is that 32mb is reserved for the graphics chip.
Click to expand...
Click to collapse
32 mb for a graphic chip, on a mobile device, is a lot
Maybe it would be nice to reduce this to 24mb or 16mb
i'm just guessing i don't really know if my suggestion makes sense, and if it's possible

from what i read from htc diamond details:
"Dedicated graphics chip (64MB RAM reserved for graphics)"

does the chip have its own 64 MB RAM or is it taken from the 192 MB RAM

HTC Touch Diamon have 256MB Ram (64 reserved for GFX) 192+64=256 same memory as HTC Touch Diamond CDMA P3051 have 256 ram and 256 rom (not gfx acceleration no 64mb reserved).

if 64Mb reserved for GFX, why we have not 32Mb RAM? can we resize memory for GFX?

after that you will buy another diamond!

Look here
Don't you think it would have been done already if it was a good idea or even possible? We are on the brink of getting android to work albeit with a 900(Meh) battery.

Even beter than the installed ROM in memory phone, rom be installed in internal storage (4GB) then it would be given a lot of free memory.

Confirm total Ram in i927 vs i927R

I thought the i927/i927r where the same spec.
The Rogers Galaxy S Glide has a total of 724mb ram in the task manager instead of 1gb.
Can others confirm from either device you have?
thanx.

Maruzko said:
I thought the i927/i927r where the same spec.
The Rogers Galaxy S Glide has a total of 724mb ram in the task manager instead of 1gb.
Can others confirm from either device you have?
thanx.
Click to expand...
Click to collapse
I have Rogers and see the same as you. I assume some is used for the OS and hidden. Agreed this does seem misleading. Try adding up the hard drive space and you do not make 8GB either as it is mentioned to have.
I see 2 Partitions:
1.97 System Storage
3.75 USB Storage.
Above info also taken from Task manager.

Maruzko said:
I thought the i927/i927r where the same spec.
The Rogers Galaxy S Glide has a total of 724mb ram in the task manager instead of 1gb.
Can others confirm from either device you have?
thanx.
Click to expand...
Click to collapse
Same in i927 (AT&T Model) also.. 724 MB..
Remaining will be used by OS and GPU...

do you have the same HD space on AT&T that I posted above as well?

VinayS said:
Same in i927 (AT&T Model) also.. 724 MB..
Remaining will be used by OS and GPU...
Click to expand...
Click to collapse
Can anyone else with the i927 AT&T Captivate Glide version confirm total ram in task manager and sizes of the sd and USB partitions ?
Thanx.

Captivate Glide - AT&T
RAM 724MB
System storage 1.97GB
USB storage 3.75GB

256MB is used for Nvidia's graphics card. It's like shared RAM on a laptop with integrated graphics.

Arabic language
incidentflux said:
Captivate Glide - AT&T
RAM 724MB
System storage 1.97GB
USB storage 3.75GB
Click to expand...
Click to collapse
Hi m8, have you fixed arabic in your cap glide ?

Man do not hijack the thread.
send me a private message and I will tell you how to fix Arabic

LagunaCid said:
256MB is used for Nvidia's graphics card. It's like shared RAM on a laptop with integrated graphics.
Click to expand...
Click to collapse
Wow, so Phones with 512megs will only see 256? Wow! Boy am I glad I got this phone with 1024 where only 724 is available. What is the story with the Hard drive? Is the Android Operating system using that much from my 8GB?

dudejb said:
Wow, so Phones with 512megs will only see 256? Wow! Boy am I glad I got this phone with 1024 where only 724 is available. What is the story with the Hard drive? Is the Android Operating system using that much from my 8GB?
Click to expand...
Click to collapse
I thought it strange too.
My Motorola Milestone 2 has 512MB RAM, but only 477MB is usable. Only a gap of 35MB disappears somewhere, not 256MB. But then it doesn't have as good a GPU, so maybe it doesnt use as much for graphics.
Its only ever got 100 to 150MB free at any time out of the 477MB.

Maruzko said:
I thought it strange too.
My Motorola Milestone 2 has 512MB RAM, but only 477MB is usable. Only a gap of 35MB disappears somewhere, not 256MB. But then it doesn't have as good a GPU, so maybe it doesnt use as much for graphics.
Its only ever got 100 to 150MB free at any time out of the 477MB.
Click to expand...
Click to collapse
that's because of the way the linux kernel uses RAM to buffer and cache to speed things up, otherwise the ram would be idle and wasted.

[Q] RAM size: where is it defined?

There's 290MB RAM available but probably 384MB physical. Is this limitation somewhere in non-changeable ROM defined or is there a chance to increase it?
Edit: corrected 512 to 384 MB.

wow...are you sure. how did you know that?

Sorry, I misread it. Probably 384MB according to service manual. Updated first post.

my sister has galaxy mini with default ram 384mb. when she changed the rom to gingerbread the ram became 290mb. It could be something related with the rom as you've said.

i read that some ram is reserved for GPU you can decrease or increase that number but im not really sure of the results

Yeah, but where can I decrease it? I've also read somewhere that there's also some memory reserved for the camera.

i think the RAM memory is shared with the GPU, because it will be too large to put another memory chip for the GPU..

[Q] How increase RAM in JB..??

Hi All
after upgarde from GB to JB (either LEAK / Official), JB seemed Slow. whether to change the partitions on a flash PIT file MB2 / 4 can increase the RAM capacity in JB.
I found a thread where we can change it by using the application PIT "PIT_Magic".
but I do not understand how its use. if anyone can to using it please share...
Thanks
Original Thread PIT MAGIC

rozyid said:
Hi All
after upgarde from GB to JB (either LEAK / Official), JB seemed Slow. whether to change the partitions on a flash PIT file MB2 / 4 can increase the RAM capacity in JB.
I found a thread where we can change it by using the application PIT "PIT_Magic".
but I do not understand how its use. if anyone can to using it please share...
Thanks
Original Thread PIT MAGIC
Click to expand...
Click to collapse
You cant do that!there is about 140MB unused ram in stock firmware. in order to increase ram and use full of it ,you sould have uncompiled kernel source and know android kernel programming and change it.
but always you can change your phone partition sizes through PIT Magic while falshing.

kernel source
sorset said:
You cant do that!there is about 140MB unused ram in stock firmware. in order to increase ram and use full of it ,you sould have uncompiled kernel source and know android kernel programming and change it.
but always you can change your phone partition sizes through PIT Magic while falshing.
Click to expand...
Click to collapse
Hi Sorset
maybe we can help to hafidzduddin to edit the kernel in order to read that we change the RAM to 1 GB .. ..

From where you flashing JB? From GB or JB XXMB4?

edit PIT to get 1gb RAM
ddikodroid said:
From where you flashing JB? From GB or JB XXMB4?
Click to expand...
Click to collapse
from JB MB4
i just Edit PIT FILE on MB4 to get RAM 1 GB, but I have not dared to try it..
I am still gathering information about the RAM partition address....

1 GB? ~768MB is enough for me. Though i really think that it can't go over 700+MB.

1 Gb? WTF?
Our device doesn't have true ram? I thought that we have some sort of LDDR2 ram and it's quite different from it's flash NAND.
I think you can't go over installed 768 mb and you can't even reach this number because gpu also use the same ram.
I hope Samsung didn't put the ram on storage because it will wear out like hell. NAND it's not fast, not even prone to multiple write cycles.
Even if you're successful in increasing you ram, you will make something like swap partition on linux. But I highly doubt it will work.
Swap system is not used on mobile devices because NAND wears up too fast.

According to this:
http://forum.xda-developers.com/showpost.php?p=35222874&postcount=14
...we do not have LDDR2. There is only 4GB chip named UME300 (IC-NAND Flash Memory, 4 GB, SDIN5D2-4G-944L, BGA, P/N: 1107-002091)
It may be true regarding memory size of ACE 2:
system 1,2 + USB 1,1 + 0,768 + spare for dead cells = 4GB
SIII Mini for example have 1GB RAM and I/O and RAM operations are much much faster. Also there are no 768MB LDDR2 chips on market. Using emmc as low speed LDDR2 substitute is quite common in Samsung devices.

arroyo said:
According to this:
http://forum.xda-developers.com/showpost.php?p=35222874&postcount=14
...we do not have LDDR2. There is only 4GB chip named UME300 (IC-NAND Flash Memory, 4 GB, SDIN5D2-4G-944L, BGA, P/N: 1107-002091)
It may be true regarding memory size of ACE 2:
system 1,2 + USB 1,1 + 0,768 + spare for dead cells = 4GB
SIII Mini for example have 1GB RAM and I/O and RAM operations are much much faster. Also there are no 768MB LDDR2 chips on market. Using emmc as low speed LDDR2 substitute is quite common in Samsung devices.
Click to expand...
Click to collapse
I thought this was a joke at first when rozyid said we can increase our RAM
so it was 601MB system + 302MB cache + 1,2GB data + 1,1GB usb = ~3,2GB
It will make sense if the remaining is our "RAM"
if somehow someone able to increase this by resizing other partition (/cache maybe?) it would be really nice
And btw, what is the function of /cache? When I checked it using link2sd it wasn't used
But hey, didn't we used another partition /preload in JB? If I'm not wrong it was about 200MB, right? So then it be more than 4GB if we add it to previous calculation
Sent from my GT-I8160 using xda app-developers app

[Noob] For example wont decreasing the RAM on the device increase the "ram" allocated to the GPU thus increasing our gaming performance in any way?

S3 mini RAM score is only 10% faster in antutu, either S3 mini doesn't have true RAM or our device has one.

I think you've added up incorrectly here. 4GB is usually 3.7gb total.
Also, if you looked in the PDF's from one of the links above, you would notice we do in fact have LP-DDR2 ram...

arroyo said:
According to this:
http://forum.xda-developers.com/showpost.php?p=35222874&postcount=14
...we do not have LDDR2. There is only 4GB chip named UME300 (IC-NAND Flash Memory, 4 GB, SDIN5D2-4G-944L, BGA, P/N: 1107-002091)
Click to expand...
Click to collapse
I was very confused when you wrote this. It's absolute non-sense to use NAND as RAM. It will wear in only one month.
They should have at least the most creepy ram, cache or something else that it can be re-writable.
You can have smooth gui with no RAM installed. It's impossible. You can't draw 20000 triangles per frame and having decent framerates without having a ram that it's capable of speed near 1 Gb/s ...
Also usually memory came in banks, 256 Mb banks were usual in the past, so puting 3 banks can give you 768 MB.

@Jamielawther
I would love that fact to be truth, but this diagram is not hardware schematic. It is logical diagram how things push data between elements. Move couple pages further and try to find element for LP-DDR2 on PCB. I did not found one. Also in document 05-GT-I8160-EPLIS-11.pdf you have the list of electrical parts. I did not found SEC Code for anything that could be LP-DDR2.
@veaceslaw
Take a look at PCB in 08-GT-I8160-TSHOO-7.pdf. There are no 3 ram chips there. In fact there is only one 4GB. If they used emmc as a RAM, it won't die in one month. Probably it last for 2 years or more ... after warranty it may die.
In my PC, SSD disk is used as TEMP and cache memory for last 2 years. Still running flawlessly. Every ROM chip has some space left for spare blocks to be used as a replacement for died blocks.

arroyo said:
@veaceslav
Take a look at PCB in 08-GT-I8160-TSHOO-7.pdf. There are no 3 ram chips there. In fact there is only one 4GB. If they used emmc as a RAM, it won't die in one month. Probably it last for 2 years or more ... after warranty it may die.
In my PC, SSD disk is used as TEMP and cache memory for last 2 years. Still running flawlessly. Every ROM chip has some space left for spare blocks to be used as a replacement for died blocks.
Click to expand...
Click to collapse
Can you find the U8500 chip?

veaceslav said:
Can you find the U8500 chip?
Click to expand...
Click to collapse
UCP300

arroyo said:
UCP300
Click to expand...
Click to collapse
http://forum.gsmhosting.com/vbb/archive/t-1363562.html
UCP 300 is RF chip and I don't know what rf is, but it's in GT i9100 and I don't think i9100 have Novathor

if you do it guys it would be awesome
because all good games with best graphics lags
i even dont want to get back to this ugly outdated gingerbread

arroyo said:
@Jamielawther
I would love that fact to be truth, but this diagram is not hardware schematic. It is logical diagram how things push data between elements. Move couple pages further and try to find element for LP-DDR2 on PCB. I did not found one. Also in document 05-GT-I8160-EPLIS-11.pdf you have the list of electrical parts. I did not found SEC Code for anything that could be LP-DDR2.
@veaceslaw
Take a look at PCB in 08-GT-I8160-TSHOO-7.pdf. There are no 3 ram chips there. In fact there is only one 4GB. If they used emmc as a RAM, it won't die in one month. Probably it last for 2 years or more ... after warranty it may die.
In my PC, SSD disk is used as TEMP and cache memory for last 2 years. Still running flawlessly. Every ROM chip has some space left for spare blocks to be used as a replacement for died blocks.
Click to expand...
Click to collapse
Anyone bothered to look through the documentation?
If you check 08-GT-I8160-TSHOO-7.pdf on the first page you can see the block diagram and there you can see stated LP-DDR2.
Check the attached picture.

If same chip is being used as RAM, then what is the benefit of moving data from on part of same memory to another? Won't that reduce io speed, cos I thought the purpose of RAM is to speed up data access for CPU from normally slower data storage eg. Hard drive.
Sent from my GT-I8160 using xda app-developers app

[Q] ram expanding

I want to expand my raM
I am using Rosoft ramexapnder
And exapnded 797 mb ram but i think its not working plz help me what to do???

kishnachauhan said:
I want to expand my raM
I am using Rosoft ramexapnder
And exapnded 797 mb ram but i think its not working plz help me what to do???
Click to expand...
Click to collapse
Ur Not expanding your RAM.
But you are overclocking it.
Is your phone is Rooted??
if no.,
Root your phone 1st then try to Expand(OverClock) your Ram.
Personally, I do not recommend anyone to try to Overclock his Phone's RAM or Processor.
Because OverClocking may cause Unrecoverable Damage to ram and processor.