Database Develop

rom&ram size

i look in the specification of kaiser in htc site, and it shows 256 rom and 128 ram.
when i look in my memory section at my device i saw
storag 153m and program 101mb
can anybody tell me what is missing, im using the originall rom.
am l anderstaning it wrong or there's another reason

The devices OS and applications take up the space not listed in this case 103 and 27 MB, respectively. The missing space is being occupied or used by the installed OS and applications. The space you see is what is left and available for you to use. If you were to erase everything and look at the space then you would see truer values (not that you can).

So whats the difference between ROM memory and RAM memory?
When I install a program on my device (not storage card), am I utilizing space from ROM or RAM?
And is storage ROM or RAM and program is ROM or RAM?
Thanks

Assuming the same terms appy with my TyTN II as with full sized PCs, ROM = Read Only Memory and RAM = Random Access Memory. ROM is Non-Volatile (ie data is not lost when the power is switched off) where as RAM is volatile (why you get a message saying data may be lost if you continue to run down your battery when it's very low. ROM is generally (much) slower for read and write speed than RAM (hence why RAM is used).
In the case of the TyTN II ROM is what is known as flash memory (because it can be overwritten using a process called flashing). It can also be written to in more general use such as when installing programs so I prefer the term Flash rather than ROM because it's not strictly read only in this case.
When the programs are installed into main memory (rather than a card) they will be stored on ROM (so it's not lost when the power is removed) but will be in RAM as well when the PPCs CPU is working with the program.
If the OP nndd12 looks in Start =>Settings => System tab => Device Information => Hardware Tab the RAM and ROM details are in there but the ROM is termed Flash.

How much memory left do you have?

Hello everybody,
I would like to know how much memory left you have. The only programs I installed are spb GPRSMonitor, Schap"s Advanced Configuration Tool and DinarSoft MemMaid. I know I have 196MB for Ram size, but when I click on setting memory, I have only 40.25 MB free...
Not much more than with my previous Eten X500+, which had only 64 MB.
Thanks in advance,
Philippe

Same problem here, I think the current ROM has a problem...
Diamond :
Total - Storage : 83mb + Programs : 113 = 196Mb
Touch Dual :
Total - Storage : 122mb + Programs : 101 = 223Mb
Isn't the Diamond supposed to have more memory than the Touch Dual, and what's with the storage memory being 40Mb less !

I thought ROM is the one used for storage and RAM is used for processing of data by the OS?

mfbatzap said:
I thought ROM is the one used for storage and RAM is used for processing of data by the OS?
Click to expand...
Click to collapse
Yes it is... but some people still don't seem to get it...

haha okok...
anyway, what's your "idle" (no programs running other than your Touchflow and no other connections switched on) percentage of memory usage?
the lowest I can go is 61% which I feel is considerably high. I've already applied all the tweaks. Probably explains the slight lag.

How are you seeing 61% ? If you check off Touchfo3D in the today settings I hope it doesn't still start it...

the lowest i can go is 56%. and this when nothing is running except the touchflo3d,and phone is on in 3g mode with connection,also every page of tf3d is loaded(weather,progs,contact etc.)
still it says that there is 63.63mb in use of ram and now i have 49.46mb of free ram. thats the same i had on my kaiser!! very strange.
They say the phone has 192mb ram? i only see 113.08mb as total ram??
cant wait till touch pro comes out

Touch Flo 3D has memory leak issues. The longer u use, the less ram u'll have.

ok but still I get the RAM/ROM thing, but anyone knows where the rest of the RAM is? (192-112MB) I guess the 256MB rom is also used for other stuff as external rom etc.

xzces said:
ok but still I get the RAM/ROM thing, but anyone knows where the rest of the RAM is? (192-112MB) I guess the 256MB rom is also used for other stuff as external rom etc.
Click to expand...
Click to collapse
i think the memory used by the OS is not shown..
only memory used by the programs that you run are shown
hope that helps..

do I have less memory than the specs on my diamond!

hi,
I bought the Indian 2.75G version of the htc touch diamond without the extra in the front.
I checked the task manager memory and this is what it looks like:
http://gidisrael.googlepages.com/myDiamondmem.jpg
Is that correct?
If I'm not mistaken program memory is supposed to be 192MB and Rom:256MB??
Thanks so much

Google is your friend.
As far as I know, 64Mb is reserved for the GPU (+ maybe other phone functions). Here for more.

I did do some searching, but I guess I would'nt have found an article with the title "64MB eaten by aliens".
Anyway, thanks so much. I'm a little confused about the ROM now, what about the 256 MB ROM, where did it dissappear and why does it say I have 83.44 MB storage memory.
After some searching I found this on an archived post here:
128Mb of RAM speaks for itself. Of the 256Mb of flash however, 128Mb contains the operating system, the other 128Mb are available to the end user to install programs and add documents. When flashing any given device, the available flashrom is first filled up with the OS, after which a second amount is allocated to the extended rom area, and finally the rest is made available to the end user.
Click to expand...
Click to collapse
Is this correct?
Thanks.

I did a bit of research and that quote seems quite correct as to what is stored in the flash ROM:
- bootloader
- OS
- extended ROM area (themes, customizations and apps that install immediately after a hard-reset)
- (lastly) the user-available portion.
Your 83Mb is similar to my free storage mem.
I suppose getting a ROM with all the unnecessary apps removed is your best bet of increasing your program storage size. Also, I think chefs move some apps into the extended flashROM area, making more space available to program storage.

H3x said:
Google is your friend.
As far as I know, 64Mb is reserved for the GPU (+ maybe other phone functions). Here for more.
Click to expand...
Click to collapse
From what I've read in other threads, both the Diamond and the Pro lacks graphics drivers for hardware processed rendering so what's the use of having a GPU then?

everyone would like to know
mostly to lure people in with a spec that doesnt live up to itself.

G1 RAM - How Used by Running Programs?

I've done a lot of searching and haven't been able to find a clear answer on this one.
Just so terminology is clear...a standard computer running an operating system stores applications on a hard drive. When a user runs a program, it is loaded into physical memory/RAM and executed. A multi-tasking OS running on a computer with a single-core CPU will hold more than one program in physical memory and switch between them such that, to the user, it seems that more than one program is being executed at the same time.
Now, on the G1, there is 192MB of SDRAM, of which about 71MB is available for storing user-installed applications. I'm assuming this is analogous to the hard drive on a standard computer--along with the 256MB of flashable ROM for the operating system, etc. So, when a user runs a program, where is it loaded? In other words, what is the analogy to the physical memory on a standard computer? Is it part of the 71MB of RAM used to store applications? If so, if I use the entire 71MB of RAM to store applications, will I have no physical memory left to run apps?
And, if I root my phone and move all my apps to the SD card, does having the entire 71MB of RAM free allow me to have more programs open and running, analogous to having more physical memory/RAM installed on a standard computer?
Thanks much for the info!

Let's clear up terminology some more.
The G1 has 256MB of ROM (Storage) with ~71MB left after install of the stock image. The remaining 60-80MB (depending on ROM) is what is used by default to install apps and for purposes of cache, acting in the equivalent purpose to a hard drive. If you use Apps2SD this is the storage you are extending.
The G1 has 192MB of RAM. This is used to run the programs and base OS. When RAM runs low the Android OS will close programs to free up enough memory to allow the foreground application the memory it needs. If you create a swap file or swap partition this is the memory you are extending.
I hope that clears it up.

Ah! So that's what I was missing. I didn't realize that the 256MB of ROM was the "hard drive" for the G1. That makes a lot of sense. Thanks much.

JanetPanic said:
Let's clear up terminology some more.
The G1 has 256MB of ROM (Storage) with ~71MB left after install of the stock image. The remaining 60-80MB (depending on ROM) is what is used by default to install apps and for purposes of cache, acting in the equivalent purpose to a hard drive. If you use Apps2SD this is the storage you are extending.
The G1 has 192MB of RAM. This is used to run the programs and base OS. When RAM runs low the Android OS will close programs to free up enough memory to allow the foreground application the memory it needs. If you create a swap file or swap partition this is the memory you are extending.
I hope that clears it up.
Click to expand...
Click to collapse
Your answers is right and thanks for the useful information. I have one question though!! when I install any ROM and do a "free" command on terminal, it tells me total memory 97MB, free memory 3MB or 4MB etc.
I want to know that G1 has built in 192MB ram then why it shows 97MB only? where the rest goes?

ibraheeemz said:
Your answers is right and thanks for the useful information. I have one question though!! when I install any ROM and do a "free" command on terminal, it tells me total memory 97MB, free memory 3MB or 4MB etc.
I want to know that G1 has built in 192MB ram then why it shows 97MB only? where the rest goes?
Click to expand...
Click to collapse
On the EBI0 HTC Dream there is to my knowledge the following:
8MB @0x00000000
32MB @0x02000000
110MB @0x10000000
------------------------
150MB accessible by linux
102MB (103MB with my recent patch) is general purpose (~5MB reserved by the kernel allowing you to see the 97/98)
48MB (or 47MB) are either in small holes or used for hardware communication or other special tasks (video ram, camera ram, memory log buffer ect)
42MB not listed is used by the radio firmware; that controls access to the entire device

Some Clarifications About Memory

Hello,
I would like someone to clarify to me some things about the device memory. My current mem readings as shown in the Control Panel are:
- Storage: 299.01 MB (210.27MB free)
- Program: 183.73 MB (72.87 free)
According to the official specs, the Topaz has 512 MB ROM and 256 MB RAM. How are these two types of memory related to Storage and Programs? Is there a way to mess between RAM, ROM, Storage and Programs in order to achieve optimum memory usage? For example, in my device there seems to be a lot of free Storage Mem available, as compared to Program Mem... Should I need to do something about this big discrepancy?
I would be grateful if someone clarified all this to me.

To be very short:
ROM (Read Only Memory) is where bootloader and Windows resides:Beside this there is more room to install applications (Programs) and to store personal files such as pictures,videos,mp3,docs etc.(Storage). ROM is non-volatile memory, this means that data will remain in the device even if power is cut off and will be available the next restart.RAM (Random Access Memory) is volatile memory that your device needs for ordinary functioning (loads into it programs that are running).RAM wil be emptied if powered off. It does not have sense to compare these two values and try to make them similar. An advice would be to install and store all you can in the Memory Card.Note: some apps/cabs need necessarily to be installed in the device (Programs memory) otherwise they don't work.Note 2: Access timings to memory cards are higher than internal ROM, take it in consideration if you have to decide where to store/install.
...Well I wasn't so short..I'll try it again:
If someone asked me:""why do I have so little free Program memory compared to Storage memory?"
I'd answer:"It's beause of many useless Microsoft programs embedded into Windows that cannot be uninstalled, only cooks can do it"

Thanks a lot for the (not so short after all! ) reply! So, if I get it correctly, the so called Storage Memory is the ROM after all: In other words, these 210 MB that are free cannot be utilized by me in any way, unless of course, I switch to a cooked ROM that contains lots of programs that currently occupy my RAM, and which they will not be needed to be installed there any more.... However, I am not in the mood of flashing and setting everything up from scratch, right now....
The storage card is indeed a solution, yet it has the two limitations that you correctly mentioned... So, I will basically have to stick with the RAM that is left...

In the same order as your arguments:
-Those 210 MB CAN be used by you, by installing apps in it, but I adviced you to possibly install them in Memory Card unless inevitable.
-Cooked ROMs generally free up Programs Memory area (or maintain same memory and upgrade embedded apps).
-Storage card is simply VITAL,access timings and transfer speeds are good enough to support everyday use.
-Then you talk about RAM: You "have to stick to RAM that is left" as anybody,but RAM usage is variable, depending on how much intensive is your device work in runtime. To optimize RAM memory use CleanRam, you can do it manually or schedule it (like I do)...and of course don't run too many apps at the time (check Task manager)!!

jcan said:
Hello,
I would like someone to clarify to me some things about the device memory. My current mem readings as shown in the Control Panel are:
- Storage: 299.01 MB (210.27MB free)
- Program: 183.73 MB (72.87 free)
Click to expand...
Click to collapse
I was talking about these 210 MB, which are reported as free in my Storage memory, which if I understood well is the ROM... So I can't use them to install apps in it.
On the other hand, the Program memory (which I have 73 MB free) is the RAM, right?
Or I've got it all wrong?

210 MB is part of the ROM and it is free space in which you can store personal files (mp3,pictures,videos,contacts,docs etc.)--->same as Memory Card but smaller and quicker.The free memory in which you can install programs is in your case 72.87MB and is still part of the ROM(I want to better check this last statement,update coming soon).
RAM is another memory module,physically separated from ROM,it's another chip. RAM values vary with the device workload.
Update: I confirm,to simplify we can say that both Storage and Programs memory is part of the ROM, in no ways it can be considered as being RAM.

Thanks a lot for all the clarifications, sualc! Now everything has been sorted out to me.

You're welcome,cheers