Database Users

i8000 has 256mb of ram... but where is it?

When I check the amount of free ram after I start my Omnia II it shows that I have somewhere around 70mb free, with half of the ram showing as "reserved".
I feel like I was cheated into buying a device which only has half the advertised amount of ram. Sure, it might be there... somewhere... but why can't we have it? Why is half of the ram "reserved" and what is the purpose of this exactly? Is there anyway to set it free?

it is possible that Samsung reserved it for Touch Wiz or samsung apps included in Rom?

Hi guys! I have the same problem. Over half RAM Memory is "reserved". I hope somebody can help us in getting more available RAM. Thanks!

"Sorg" over at modaco has determined that approx 100 is reserved for the radio, camera and hardware accelerated graphics.
currently the page pool is aprox 20 mb but the newest release from "secany" over at modaco has Samsung reducing the page pool to 15 mb to give us an extra 5 mb of ram.

maybe omnia II case is similar to the HD2 case where some geek find out how to increase RAM memory... seems that HD2 also had reserved memory for ie. radio and other functionalities and it was solved how to release it.. don't know the case in details but read over net that someone did that creating new kind of rom.

i hope xda devs can fix this issue. This is one big issue why the omnia is not so great if this gets solved then all the problems would go away. I would glady give up some space from my storage if need to et maybe 128MB free. after a cold boot i get around 60MB free thats with spb and mskip both running

jebise101 said:
i hope xda devs can fix this issue. This is one big issue why the omnia is not so great if this gets solved then all the problems would go away. I would glady give up some space from my storage if need to et maybe 128MB free. after a cold boot i get around 60MB free thats with spb and mskip both running
Click to expand...
Click to collapse
Rom and Ram(random access memory) are two diff things, you cant give up internal mem as ram.

We hope one day our brother inside xda dev or modaco can create the Tools & ROM to reFormat the RAM and Hidden Store in My Storage, so we can get more storage with workable ROM, tq

ratsbane said:
maybe omnia II case is similar to the HD2 case where some geek find out how to increase RAM memory... seems that HD2 also had reserved memory for ie. radio and other functionalities and it was solved how to release it.. don't know the case in details but read over net that someone did that creating new kind of rom.
Click to expand...
Click to collapse
hd2 has 128 hardware but were hidden by htc i don't think omnia has it

hoss_n2 said:
hd2 has 128 hardware but were hidden by htc i don't think omnia has it
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Click to collapse
Omnia 2 has 256 MB RAM as per tech spes, but only ~140 is usable, the rest remain for radio etc. so maybe this remaining ~100 MB could be accessible somehow as on HD2

ratsbane said:
Omnia 2 has 256 MB RAM as per tech spes, but only ~140 is usable, the rest remain for radio etc. so maybe this remaining ~100 MB could be accessible somehow as on HD2
Click to expand...
Click to collapse
the extra 128 rams in hd2 were disabled not used by radio

redzone321 said:
"Sorg" over at modaco has determined that approx 100 is reserved for the radio, camera and hardware accelerated graphics.
Click to expand...
Click to collapse
if camera has reserved ram then why does it have to shutdown everything else or complains about the memory and won't start :s

good question. Anybody knows how it works or how it is supposed to work?

64mb - radio (radio chipset has no ram so it uses system mem)
36mb - os crap(pagepool,etc..)
16mb - graphics mem
256-64-36-16=140mb available to wm

64mb for the radio is... kinda too much. Seriously, what does it need that much RAM for?

ginkage said:
64mb for the radio is... kinda too much. Seriously, what does it need that much RAM for?
Click to expand...
Click to collapse
exactly thinking the same way

Any updates anyone? The RAM problem is pretty much the ONLY issue I have with this phone..

azza6 said:
Any updates anyone? The RAM problem is pretty much the ONLY issue I have with this phone..
Click to expand...
Click to collapse
easiest way to solve it is to go back to 6.1 rom you get aprox 110-120 mb of free ram. theres a few on modaco.
Or personaly i find if i use titanium + disable lock screen(usetouchlockpro), diable default dialer(use PhonEx for dialer/contacts) you get 90 mb after boot. which settles down to aprox 80-85.
This is useing Sonblack rom from PDAViet
it can be found at PDAViet or Modaco!

redzone321 said:
easiest way to solve it is to go back to 6.1 rom you get aprox 110-120 mb of free ram.
Click to expand...
Click to collapse
Not true, my one is 6.1 and yet less than 25m I can use this space even though so call factory default after reset. The bloody main storage has 512m, almost 500m has been used. I have not install any program yet. The 8G is used about 0.6G which wasted so much space. Samsung designers really screwed up!
Looks like even thought upgrade to 6.5 also did not improve much of the main storage space, that really sad..

I was shocked by these amounts of free memory too.
I was found only ONE solution...FLASHING some LITE or ULITE (Ultra LITE) ROM.
I personally flashed rom by Speedfrog: http://windows.modaco.com/topic/323437-lite-roms-by-speedfrog/
Free main memory about 300MB and free Ram about 110MB...I'm using it for more than one year with great success.

Swap File

Most Say that a swap file doesn't make Much of a Difference, From personal experience I would have to disagree
Running free in the terminal on a normal nor swap enabled day I would have 22 - 200 free, this is running no programs, and 3 email accounts
Recently I created and enabled a 512MB swap on my SD, against my better judgment of swapping on solid state..
This has had Drastic improvement in performance let alone free not showing 3916 free in mem and 14424 used on the swap, My shift is alot more fluid and responsive,
Your results may vary but i figured i would share my results
Im running scarystable comp cache 18%, vm heap 48m on CM7 nightly 238
again I don't claim to know anything more then the next guy Just sharing my results

Give me about 15 minutes and you can have these types of stats when you type free in terminal. It does help, regardless of what others have said. And scary kernel will work.
http://db.tt/6NzMLnpl
Sent from my PG06100 using xda premium

I love it, Now my only worry it the wear on my SDcard, but I figure aslong as I delete and create the Swap file once in a while it will ware evenly, I just never expected this kind of gain from it.
I will admit 512 may be overkill but it sounded nice
Thanks for your results!

The problem with swap files/partitions is they're slower then ram so you need to buy the highest class sdcard your device can handle to have anything resembling a positive effect and they'll destroy your sdcard. Plus unless you have a script or app to manage swap its a pain to have to disable and re-enable swap when attaching to your pc through usb.
With our devices having 512 ram and something like V6Supercharger with compcache disabled I've found I always have more then enough free ram for pretty much anything.
Sent from my PG06100 using XDA App

Move thread to here: New thread with instruction and patch
http://forum.xda-developers.com/showthread.php?p=18921074#post18921074
---------- Post added at 01:39 PM ---------- Previous post was at 01:38 PM ----------
Ron Overdrive said:
The problem with swap files/partitions is they're slower then ram so you need to buy the highest class sdcard your device can handle to have anything resembling a positive effect and they'll destroy your sdcard. Plus unless you have a script or app to manage swap its a pain to have to disable and re-enable swap when attaching to your pc through usb.
With our devices having 512 ram and something like V6Supercharger with compcache disabled I've found I always have more then enough free ram for pretty much anything.
Sent from my PG06100 using XDA App
Click to expand...
Click to collapse
No, swap file is slow, swap partition is not

sparksco said:
No, swap file is slow, swap partition is not
Click to expand...
Click to collapse
The data rate of a class 10 sdcard is 10MB/s. DDR-200 which is the oldest and slowest DDR ram is 1600MB/s. Swap is slow regardless whether its a file or a partition.
Sent from my PG06100 using XDA App

Ron Overdrive said:
The data rate of a class 10 sdcard is 10MB/s. DDR-200 which is the oldest and slowest DDR ram is 1600MB/s. Swap is slow regardless whether its a file or a partition.
Sent from my PG06100 using XDA App
Click to expand...
Click to collapse
There is a difference between swap file and swap partition

blahbl4hblah said:
There is a difference between swap file and swap partition
Click to expand...
Click to collapse
Yes, but a swap partition can -not- increase the physical read/write speed of the sdcard which is the point I'm making. Is swap file slower then a partition? Yes I never argued that. My argument is swap in general is slow.
Sent from my PG06100 using XDA App

Ron Overdrive said:
Yes, but a swap partition can -not- increase the physical read/write speed of the sdcard which is the point I'm making. Is swap file slower then a partition? Yes I never argued that. My argument is swap in general is slow.
Sent from my PG06100 using XDA App
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Click to collapse
If your here to use, test swap, provide your results ect fine. If your here to bash swap, then please stfu and go away. We don't need negativity in these forums. do you even know what swappiness is or how to set it?

Swap
Swap is not meant nor does it truly need to be fast, From my understanding it takes whats not being used from ram and "swaps" it to disk to free up ram for programs that require the speed, It is not a replacement for direct ram.
None the less I thank sparksco for his Post and will be trying it out later in much anticipation

JaceAlvejetti said:
Swap is not meant nor does it truly need to be fast, From my understanding it takes whats not being used from ram and "swaps" it to disk to free up ram for programs that require the speed, It is not a replacement for direct ram.
None the less I thank sparksco for his Post and will be trying it out later in much anticipation
Click to expand...
Click to collapse
Your trolling skills amaze me...
Sent from my PG06100 using xda premium

JaceAlvejetti said:
Swap is not meant nor does it truly need to be fast, From my understanding it takes whats not being used from ram and "swaps" it to disk to free up ram for programs that require the speed, It is not a replacement for direct ram.
None the less I thank sparksco for his Post and will be trying it out later in much anticipation
Click to expand...
Click to collapse
Nice
10char

JaceAlvejetti said:
Most Say that a swap file doesn't make Much of a Difference, From personal experience I would have to disagree
Running free in the terminal on a normal nor swap enabled day I would have 22 - 200 free, this is running no programs, and 3 email accounts
Recently I created and enabled a 512MB swap on my SD, against my better judgment of swapping on solid state..
This has had Drastic improvement in performance let alone free not showing 3916 free in mem and 14424 used on the swap, My shift is alot more fluid and responsive,
Your results may vary but i figured i would share my results
Im running scarystable comp cache 18%, vm heap 48m on CM7 nightly 238
again I don't claim to know anything more then the next guy Just sharing my results
Click to expand...
Click to collapse
Swap file is useless and slows your phone down. Just like a pagefile on windows.
"disk" is ALWAYS slower than "RAM"
Post your linpack and antutu scores.

(INFO)What is zram and how does it work???

I think its better to Post this here,when its not better,than sorry!!!
-----------------------------------------------------------------
Once a brief statement for those who are not traveling so long in the Android scene:
ZRAM = ramzswap = Compcache
In order to explain more precisely ZRAM first need other terms are more clearly defined:
Swap can be compared with the swap file on Windows. If the memory (RAM) to complete the PC the data that are being used not actively outsource (eg background applications) so as to re-evacuate RAM free. To this data is written to a hard disk. If required, this data is then read back from there easily. Even the fastest SSD is slower than the RAM. On Android, there is no swap!
In ZRAM unnecessary storage resources are compressed and then moved to a reserved area in the fixed RAM (ZRAM). So a kind of swap in memory.
This Ram is more free because the data then only about 1/4 of the former storage requirements have. However, the CPU has to work in more because they compress the data has (or unpack again when they are needed). The advantage clearly lies in the speed. Since the swap partition in RAM is much faster than this is a swap partition on a hard drive.
In itself a great thing. But Android does not have a swap partition, and therefore brings Android ZRAM under no performance gain as would be the case with a normal PC.
In normal PC would look like this:
Swap = swap file (on disk) -> Slow
ZRAM (swap in RAM) -> Faster than swap
RAM -> Quick
With Android, there is no swap partition, and therefore brings ZRAM also no performance boost.
The only thing that brings ZRAM is "more" RAM. Compressed by the "enlarged" so to speak of the available memory. That's on devices with little RAM (<256MB) also pretty useful. The S2 has 1GB but the rich, and more than. There must not be artificially pushed up to 1.5 GB.
After you activate the ZRAM also has 2 disadvantages. The encoding and decoding using CPU time, which in turn has higher power consumption.
Roughly one can say (For devices with more than 512MB RAM):
Without ZRAM: + CPU Performance | + Battery | RAM
With ZRAM: CPU Performance |-Battery | + RAM
For devices with too little RAM so it makes perfect sense. But who shoots the S2 already be fully complete RAM and then still need more?
Check whether you can ZRAM runs in the terminal with
free or cat / proc / meminfo
I hope it helps to understand zRam!!!!

Thanks for the info

Yeah thanks indeed for the info - so does this mean that we must have zram disabled because of low memory ?

no its very good for devices with less ram like 289mb and we have less ram,so its useless for higher ram devices with 800-1000,but that can u read in this guide

CALIBAN666 said:
no its very good for devices with less ram like 289mb and we have less ram,so its useless for higher ram devices with 800-1000,but that can u read in this guide
Click to expand...
Click to collapse
Yeah i misunderstood thanks for explaining !
But one more doubt - its good for us anyhow if we disable it will we get more free ram ?

in your statement zram is not battery friendly. ? am i correct. ? or not?

Sorry for too many questions mate - am the noobest guy here on xda that is why

not really because the system all the time creates virtual ram and distributed, just as if the ram is not needed, because then the virtual ram not needed and the system distributes it then falls to a normal ram, but I think it also comes to the what and how much the device is made for running multiple concurrent tasks, it is recommended.

nikufellow said:
Sorry for too many questions mate - am the noobest guy here on xda that is why
Click to expand...
Click to collapse
no problem bro,thats the reason why i open this thread.and hey im noob too

Thank you

one of the best information thread on forum
thank you mate

ewat said:
in your statement zram is not battery friendly. ? am i correct. ? or not?
Click to expand...
Click to collapse
Yes you are correct as cpu will have to do more work compresshog and de compressing stuff so more power will be consumed

Nice guide
But still i dont get it
post source : www.posting-a-post-at-tapatalk.com

@CALIBAN666
ramzswap != compcache. both using compressed data on memory. both even from the same person AFAIR. the different is ramzswap using compressed swap and compcache using compressed cache.
kernel 2.6.35 source code from samsung have ramzswap support, but you need user space program to enable it (need little patch to build it for sgy but it's easy).

irfanbagus said:
@CALIBAN666
ramzswap != compcache. both using compressed data on memory. both even from the same person AFAIR. the different is ramzswap using compressed swap and compcache using compressed cache.
kernel 2.6.35 source code from samsung have ramzswap support, but you need user space program to enable it (need little patch to build it for sgy but it's easy).
Click to expand...
Click to collapse
Can u help me on enabling ramzswap?? Zram is laggy
Sent from my GT-S5360 using XDA

hell_lock said:
Can u help me on enabling ramzswap?? Zram is laggy
Sent from my GT-S5360 using XDA
Click to expand...
Click to collapse
i follow this instruction but using build-in ramzswap.ko in sgy kernel source. the trivial part is compile rzscontrol for sgy. i forget how i build it but AFAIR need few patching. i'll post if i find it.

Not understood... Android has no swap? Then what is swapper for? Swapping partition?

I tried swapper for my galaxy y n i didnt liked it personally
By that time i had stock sd card
Im gonna try zram on my 16 gb class 6 sd card..i wish this thing works for me cuz after installing merruk kernel, my 50 mb ram got stuck
Sent from my GT-S5360 using xda app-developers app

swapp != zram
Rcain said:
Not understood... Android has no swap? Then what is swapper for? Swapping partition?
Click to expand...
Click to collapse
With swapper you can have an swap file or you can choose to partition your SD-Card to have an swap partition there. Swap is not used by default in Galaxy Y and swap space is optional not really needed in Android (or Unix/Linux in general).
On the other hand, zram is a whole different beast.

If I'm not mistaken a dev for ace2 already made it several month ago. It using init.d script to control the zram stuff

High RAM usage

Hi,
I noticed that ram usage on galaxy s4 is very high even when all of the apps are closed. I have used task manager to close all of the apps and then cleared the memory but there was still about 1.05GB of ram used. I don't know if this is normal since I haven't been using android phone for 2 years. Can somebody tell me if this is normal and why? If not what can I do to fix it? Thanks!
Sent from my GT-I9505 using xda app-developers app

its normal for s4... some stock apps are being cached in memory for faster operations

unused ram is wasted ram. If an app needs extra space, something will be automatically killed to make that space.

i.amtom said:
unused ram is wasted ram. If an app needs extra space, something will be automatically killed to make that space.
Click to expand...
Click to collapse
all of this is true... also keep in mind, the gpu requires slightly more ram because of the 1080p resolution.

Ok. Thank you all for the help

This is the problem of Sammy ROMs, the only way to fix it is to... wait for a Custom ROM and Flash it

this is normal on SGS4 .
Reasons of that are mainly GPU and HQ resolution , cached services and process, and even more if you are using the included extra features (S-voice, NFC ...)
But the SGS4 come with 2 gb of RAM ! you still get like 800 free mb of memory that is good enough for all you needs ))
Personally when I close all apps i get 0.91 gb used memry and 0.9bg free memory

Swap memory

I am considering using swap for my galaxy y. I just want to be able to use 3-4 web poages on dolphin or use facebook messenger without my phone slowing down so that my contacts and phone app takes forever to load unless i reboot.
Is 32 mb enough? or should i go for more? what are the disadvatnages of using too much swap?

subinmanaladil said:
I am considering using swap for my galaxy y. I just want to be able to use 3-4 web poages on dolphin or use facebook messenger without my phone slowing down so that my contacts and phone app takes forever to load unless i reboot.
Is 32 mb enough? or should i go for more? what are the disadvatnages of using too much swap?
Click to expand...
Click to collapse
Dude !! I m using ram mannager pro with 256 mb swap file which gives a realy hard multi tasking & smooth experience !! I m also using pure performance for better result !! See pure performance in development thread of galaxy y!!

subinmanaladil said:
I am considering using swap for my galaxy y. I just want to be able to use 3-4 web poages on dolphin or use facebook messenger without my phone slowing down so that my contacts and phone app takes forever to load unless i reboot.
Is 32 mb enough? or should i go for more? what are the disadvatnages of using too much swap?
Click to expand...
Click to collapse
If I was you I would reinstall your rom or use a different one - I use dolphin and have 5 pages open without any problems and I dont use swap which could shorten the life of your sd card

1hewarlock said:
Dude !! I m using ram mannager pro with 256 mb swap file which gives a realy hard multi tasking & smooth experience !! I m also using pure performance for better result !! See pure performance in development thread of galaxy y!!
Click to expand...
Click to collapse
marcussmith2626 said:
If I was you I would reinstall your rom or use a different one - I use dolphin and have 5 pages open without any problems and I dont use swap which could shorten the life of your sd card
Click to expand...
Click to collapse
I just wanna know if using too much swap can make your phone slower. Like 32 mb vs 256 mb. any disadvantages in choosing 256 mb other than sd card life?

subinmanaladil said:
I just wanna know if using too much swap can make your phone slower. Like 32 mb vs 256 mb. any disadvantages in choosing 256 mb other than sd card life?
Click to expand...
Click to collapse
I m using it for 6 months !! No other disadvantages?!