Database Develop

Where is all the memory?

Hello all,
I have the Rogers Wireless HTC Touch Diamond, which is advertised with 192 MB RAM, 256 MB ROM and 4 GB internal storage.
When viewing the memory page via Settings-->System (or the drop down menu on the Today screen), it shows total storage memory to be 91.8 MB and total program memory to be 115.0 MB. This doesn't add up to either of the amounts of advertised memory.
I was curious if anyone knows which portion of the memory this information represents - i.e. the RAM or ROM - and where you can find the usage information of the other. I understand the basic concept of RAM vs. ROM, but neither of these figures add up to the advertised 192 MB RAM or 256 MB ROM.
Any help would be greatly appreciated!
Regards,

Rom
All your data is stored in flash and the flash is not erased if your battery runs flat.
This is called persistent storage.
Flash space in the Pocket PC is split between storage and ROM.
The amount of data or programs you install is limited by the amount of free storage (flash) on your device.
Storage in flash is not compressed.
Due to this design, programs that are installed / stored in flash are copied to RAM to be executed - they occupy twice the space.
The directory of data stored in the boot ROM is merged with the storage flash so the user sees the file system as one.
If a file in the boot ROM is replaced by a file in storage flash the storage flash file is used.
RAM
RAM is dedicated to running programs.
If you attempt to run multiple programs that are "hogs", they may not run or the operating system may close some of them.
The memory management for programs flushes pages of programs that are no longer needed, thus optimizing the use of RAM in the system for other programs to execute.
RAM Cache for Flash Storage
A portion of the RAM is used as a write cache to increase the performance of the mobile device when writing to the flash.
This RAM cache is fixed in size by the OEM and the RAM is not usable for any other purpose.
So before performing a soft reset or removing the battery you must turn the unit off and wait 5-10 seconds. If you fail to do this you may corrupt your internal flash storage.
Condensed by mikechannon from Windows Mobile 5.0 Memory Management Op cit: Chris De Herrera
Mike

Thanks for the reply, Mike; that's some really good info. However, I still don't understand why my memory page is only accounting for 92 MB (storage) + 115 MB (program) when there's supposed to be 192 MB + 256 MB (as listed in the Diamond specs). Where's the balance? I've attached an image for clarification.
Any insight into this would be much appreciated.
Regards,

Out of the 192MB ram (program), 64MB is dedicated GPU (video) memory. So in fact usable ram is around 128mb.
Out of the 256MB Rom, usually about 80-100mb can be attributed to the ROM image (firmware) of the phone and especially since you're is branded (rogers), there are pre-installed goodies (ya right) that are taking up your space as well.
For your reference my phone shows the following:
Storage
Total: 105.17mb
In Use: 82.54mb
Free: 22.63mb
Program:
Total 107.02mb
In use: 76.67MB
Free: 30.35MB
Keep in mind that i'm on a custom ROM so the numbers will be a little off right off the bat.

Perfect! That's the info I was after. I had a feeling the 'missing' memory was attributed to something like this, but now it's all cleared up.
Thanks again.

Low System Memory

I am running eVil's 1.20/Tron Theme with dalvik and apps moved to sd ext. All available memories are fine except system memory. It shows only 2mb available. One reason why I think Metamorph says not enough sys mem to run correctly.
How do I determine what is using it up and then get more memory back, to at least +5mb?
I have root exp and term emul installed, but not an expert on using them.
Ken

[Q] Changed SD, cache left on phone

Hi people,
I have a Nexus One with Cyanogenmod 7, and I recently got an error saying that the SD card is blank or has f*cked filesystem (Sandisk SDHC 8GB). I managed to format the motherf*cker but now I still have cache left on the phone from the apps I had on my SD card.
On phone, with only some basic apps.
Available : 31.98 MB
Total Space: 196 MB
So how can I clear that cache, or leftovers from the apps I had on the SD ?
Thank's in advance.

Well, any of the apps that you had moved to the sdcard will still require removing from your phone. Using Froyo's app2sd moves only a portion of the app to the sdcard, so parts of it still remain along with the dalvik cache and the data for that app. So go into Settings -> Applications -> Manage and remove the apps that you no longer want (or were originally stored on the sdcard).

Oh, you're right, I found the apps that were on the SD and I can delete them from there. It's kinda silly, I've tried all sorts of different things but I didn't look in that section.
Thanks alot mate !

No problem. Glad you got it working.

I uninstalled everything that had leftovers on the phone but that only gave me about 12 mb space on the phone, so now I have 45 mb free out of 192. Is this normal ?
Thank you.

Were you running any app2sdext or just using the Froyo method of putting apps on there?
If you run
Code:
su
cd /data
du -hd 1
It will show you the size of each folder. If you go into those folders and run that command again, it will show you the sizes of those as well. If you change the command slightly to
Code:
du -hd 1 | grep M
It will only show you things that have a capital M in it (which is what is used to designate MB, so it will weed out some of the smaller folders).
This might give you an idea of what is taking up your space. I assume you have already sorted your apps by size in Settings -> Applications -> Manage?

I was using the App2SD free app from the market.
I ran the commands you said and this is what I've got (only high values here) :
31.1M ./data
94.6M ./dalvik-cache
28.7M ./app
Sent from my Nexus One using XDA Premium App

I would wipe your dalvik cache (can be done in the advanced section of recovery). You might be able to manually do it yourself, but it is easier in the recovery). There are probably caches from previous programs that haven't been erased. Android will regenerate any caches that it needs when it boots back up.

Seems like wiping dalvik's cache did the trick, now I've got over 100mb free on the phone.
Thank you very much brother.

If you are in need of more space on your phone, I can highly recommend using an app2sdext option. This can make the phone think it has much more internal memory. I am using a 1GB partition on my sdcard to store all my apps and dalvik cache. I use S2E which is an extremely easy app that is on the market. All you have to do is partition your sdcard (which does require it to be wiped again) and install this app. Then you just check what you want moved over to this new partition, the phone will reboot, and you will now have space to have everything installed that you want.

[Q] Use Internal m/m as RAM or RAM in S Advance

I had bought Galaxy S Advance.....under task manager following memory show..
1) RAM
=625 (but spec sys 752MB)............I understand its as RAM and it cant b increase and also apps does not install here..Its use only as a temp. memory when application run
2) Storage
= a) System storage=1.97GB (spec says 2GB)....I understand it as a ROM and app application get installed here....
=b) USB storage = 11.31GB (spec say 16GB)...I understand its internal memory
My question is
1) why USB storage is only 11.31 for user.........
2) Does S advance is or rooted or unrooted ph.
3) I want to make a secondary partition on USB storage (say 4GB or more)
4) How can i install and run all the apps on USB storage by default.
Thanks for your kind cooperation.
anil

anil.xda said:
I had bought Galaxy S Advance.....under task manager following memory show..
1) RAM
=625 (but spec sys 752MB)............I understand its as RAM and it cant b increase and also apps does not install here..Its use only as a temp. memory when application run
2) Storage
= a) System storage=1.97GB (spec says 2GB)....I understand it as a ROM and app application get installed here....
=b) USB storage = 11.31GB (spec say 16GB)...I understand its internal memory
My question is
1) why USB storage is only 11.31 for user.........
2) Does S advance is or rooted or unrooted ph.
3) I want to make a secondary partition on USB storage (say 4GB or more)
4) How can i install and run all the apps on USB storage by default.
Thanks for your kind cooperation.
anil
Click to expand...
Click to collapse
Actual user available RAM is always lower than the specified capacity. Like on the GS3, around 800MB of RAM is usable out of a reported 1GB. It's the same for every phone out there. Nothing unusual about it.
Again, actual formatted capacity is less. There is a reason why a 1TB hard drive doesn't give you full access to 1024GB. You only get something around 800 or so. So like RAM, nothing unusual.
Not to mention, your 16GB total memory is divided into user available memory and internal system memory.
Rooting your phone is something which you need to do separately. Going by your RAM capacity, it seems you have JB. (didn't known that S Advances in stores come with JB pre installed) Search the development thread for Shaan's root if you want to get toot access on your phone.
Secondary partition om flash storage? Seems kind of pointless because capacity isn't too high either.
After installing the application, go to the application manager and select the specific app. Once the app options open, you will see an option to move the app to your SD card.
By default, most large applications only put their apk installation into the the system storage. The data is put into the user available 11GB anyway.
If you choose to move it the SD card, application performance will take a hit.
Hope this helps.
Sent from my GT-I9070

[Q] Problems with application memory. How to increase it?

Hello!
I've installed a SlimKat rom (4.4.2), and I've installed two apps, both 30MB, and now I can't install any app, because it says: "Not enough memory". I've noticed on applications, that only 1,8GB is used, and 200MB is free. And now, there is a question: How to increase this memory, if the phone has internal 16 GB of memory, to make apps use more of it, like from this 2GB to 4GB or sth. On previous ROM's that I've installed I had the same problem, but it was like 300mb available, and I was able to move some apps to SD card, but not every app is movable, so plese, help me increase this available memory for applications.
Thanks.

Check you data partition and delete the lost+found folder..

nokiamodeln91 said:
Check you data partition and delete the lost+found folder..
Click to expand...
Click to collapse
Lost-found folder was empty.

Data/logs?

nokiamodeln91 said:
Data/logs?
Click to expand...
Click to collapse
Data /data 35mb that are needed, logs empty. Its a fresh ROM, installed after full whipe, no unwanted files found SO far, but i don't know what uses this 1.8 gigs of memory...

Use SD maid to scan files.. It should show some info you need.

I did data whipe and installed ROM again, now it's ok. Dunno what used this 1.8 gigs of memory.