Database Develop

Sd vs OnBoard Memory

Hey guyz....ne idea whts the speed comparisions between a class 6 sdcard and the on board memory ? Which is faster ? Well i know onboard usually are the fastest...just wondering the speed difference....

Not sure...but the /system is already filled enough whereas your ext partition on ur class 6 card is only ~1/6 - 1/5 filled so you have plenty of memory to mess around with. I think the read/write rate (6mb/s) iis about the same.

alritewhadeva said:
Not sure...but the /system is already filled enough whereas your ext partition on ur class 6 card is only ~1/6 - 1/5 filled so you have plenty of memory to mess around with. I think the read/write rate (6mb/s) iis about the same.
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Yea c thts wht i was wondering...then as long as we have a big enough class 6 sdcard...shudnt hero run just as fast on the G1 as the original when using swapper?

[Q] what is swap??

ok.. im a noob at this... bt what is SWAP partition??? how does its size effect the performance??

It's a partition on your device that the system use when the RAM is full.

so if its grater in size.... that means its good... right??
and if so.. then y do devs prefer to keep it as 0mb??

Beceause it's easier to maintain it i suppose ^^

Its because there is no need for swap and it can reduce the life of your sd card, according to most ppl
Sent from my HTC Wildfire using XDA App

pyroblazer said:
ok.. im a noob at this... bt what is SWAP partition??? how does its size effect the performance??
Click to expand...
Click to collapse
But remember, swap partition will never be fast like device ram chip.
And if u want to achieve good performance witch swap partition, buy microsd card class 6 (not 4)
good luck

Or use the stock class 2 card
Sent from my GT-P1000 using XDA App

ok... how do i check the class of by card?? coz here in India they dont provide class info along eith the card... also there is nothing written on it.... my card gives me a decent transfer rate of 4-5 mbps while copying to the card...

Class 4, it give me 10mb writing speed
Sent from my HTC Wildfire using XDA App

then i'd say mine is class 2(4-5 mbps while copying pc to sd, where as 9-10 mbps while copying 4m sd to pc)??? any software that could assure me??

interesting I have 8GB sd card class 4 and writing speed is 2mb max... is anything wrong? ****

jocto said:
interesting I have 8GB sd card class 4 and writing speed is 2mb max... is anything wrong? ****
Click to expand...
Click to collapse
Either u have been fooled, or its a problem with ur Pc(coz my class2 card gives me 4MBPS),
or the number of files is too large
Example :- 1 file of 100MB will copy faster than 100 files of 1MB each...
getting my point??

[Q] Ramdom Access Memory

Hello running Teamhacksung ICS 15 with ICY GLITCH v14-
I need some help understanding this....I have 2 gb internal storage? 13.03 gb USB storage? 4 gb external micro-sd card? I have 1.85 available Internal 11.74 USB ...all that being said...why is my memory being so taxed? please see attached screenshot

The Captivate has 512 MB of RAM, 16GB of NAND flash memory (partitioned for different parts of the OS), and you have a 4 GB NAND flash Micro SD card.
RAM is different from flash memory or a hard disk. RAM is what your phone uses to run software and hold temporary data for quick access.

Lol because our phones ram sucks.... at best i get ~ 125MB free ram. I avg 40-80 MB with all my widgets and a few apps open.
Edit: that 512MB is a lie... THE CAKE IS A LIE! lol

But thats with all apps running at startup? If you have less apps running shouldnt you have less stress on RAM? Man it sucks someone hasnt developed an app similar to readyboost in I HATE WINDOWS...doesnt it use flash memory as ram? Ok...so with reference to my screenshot my memory usage is normal?

Why do you want free RAM? If it's unused, it's wasted. Another tidbit that no one seems to ever mention is that resources in Android are memory-mapped. If things like images and other binary objects are aligned properly, they will not be copied into RAM at runtime, but read directly from their stored location.

This is true. But android doesn't always manage its memory perfectly. I usually close apps out of habit, but if I let it I can have alot of apps open and I won't notice. Then again I've been using since 2.1 and that REALLY sucked with memory management.

prbassplayer said:
Lol because our phones ram sucks.... at best i get ~ 125MB free ram. I avg 40-80 MB with all my widgets and a few apps open.
Edit: that 512MB is a lie... THE CAKE IS A LIE! lol
Click to expand...
Click to collapse
True. 340MB is free for user space. The rest is for kernel, video, audio buffers, etc.

340MB(Galaxyian) is on big MEM kernels(truly 344MB on others, but he found a way to keep HD recording!) On any stock ROM's it is 329MB available...

Image above says he has closer to 355mb
Sent from my ICS powered Captivate using Tapatalk

Ohh well I was talking about STOCK roms haha well we all know how well MTD ROM's compare to STOCK in performance

prbassplayer said:
Image above says he has closer to 355mb
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Click to collapse
LOL. That's because 1MB = 1048576 bytes, so 340 x 1MB = 356,515,840
TalenDEV bigmen is 352MB, but no HD recording and I think it messed up HD playback as well. I don't worry about it too much.

I know, was pulling your chain
CuriousTech said:
LOL. That's because 1MB = 1048576 bytes, so 340 x 1MB = 356,515,840
TalenDEV bigmen is 352MB, but no HD recording and I think it messed up HD playback as well. I don't worry about it too much.
Click to expand...
Click to collapse
I know I know, was kidding And no it shouldn't mess with playback.

[Q] how can i increase ram of my samsung galaxy ace

how to make virtual ram in galaxy ace rooted s5830.....running ics'ed by snowpluralism....
n do it helps in smooth runnings...
and any disadvantages:highfive:

Ashish924 said:
how to make virtual ram in galaxy ace rooted s5830.....running ics'ed by snowpluralism....
n do it helps in smooth runnings...
and any disadvantages:highfive:
Click to expand...
Click to collapse
Well, you can use a swap partition. CM7+ also has ram compression.
Sent from my GT-S5830 using Tapatalk 2

NathanBookham said:
Well, you can use a swap partition. CM7+ also has ram compression.
Sent from my GT-S5830 using Tapatalk 2
Click to expand...
Click to collapse
can u help me in that...i dont know how to do it...n also is it safe and effective....thanks

Ashish924 said:
can u help me in that...i dont know how to do it...n also is it safe and effective....thanks
Click to expand...
Click to collapse
Google for it. XDA is against spoon-feeding..!!
___________XDA Premium__________
Don't be a noob. Be a newbie..!!
Details here.
____________________________________

I've tried swapper 2, it's good. But have to understand each term they use in the app. Currently I'm now on RamExpander. Very good.
Sent from my GT-S5830 using xda app-developers app

DuckyDawn said:
I've tried swapper 2, it's good. But have to understand each term they use in the app. Currently I'm now on RamExpander. Very good.
Sent from my GT-S5830 using xda app-developers app
Click to expand...
Click to collapse
For me Ramexpander say is not compatible with Ace.

I heard swapping partition from sd card to increase the ram, sd card might get damaged!!, is it true?

Reduces SD Life so yes.
Sent from my iPhone

but i guess you will change your sd card before it gets damaged so much, that you will notice.
i only had this once on a USB pendrive. it loses data since some weeks ago. but its about 8 years old.
lets say that todays SD cards have better lifetime than years old USB sticks. lets also say that you use your sd card more often than i used this stick (backups later car-radio). so we can say your SD card might have a bit less lifetime. lets say 6 years. in 6 years you will (most likely) have a new phone, sd cards are "oldies" and if not, 1TB cards are state-of-the-art.
so....yes you loose lifetime but i dont think you will use it till it "dies"

CJCord said:
but i guess you will change your sd card before it gets damaged so much, that you will notice.
i only had this once on a USB pendrive. it loses data since some weeks ago. but its about 8 years old.
lets say that todays SD cards have better lifetime than years old USB sticks. lets also say that you use your sd card more often than i used this stick (backups later car-radio). so we can say your SD card might have a bit less lifetime. lets say 6 years. in 6 years you will (most likely) have a new phone, sd cards are "oldies" and if not, 1TB cards are state-of-the-art.
so....yes you loose lifetime but i dont think you will use it till it "dies"
Click to expand...
Click to collapse
It really depends on use. When I swapped i ate through my sdcard in less than 6 months.. so there you go. Keeping low swappinness will increase sd card life, but it does depend on use.

increasing ram by swapping sd card is effective to what extent...can any body tell me....does it bridge the gap of our low ram...
AND ANY OTHER DISADVANTAGE THAN REDUCING SD CARD LIFE

Blackstard said:
For me Ramexpander say is not compatible with Ace.
Click to expand...
Click to collapse
Huh? I Don get u cozy mine is working fine. Downloaded from blackmarket
Sent from my GT-S5830 using xda app-developers app

Ashish924 said:
increasing ram by swapping sd card is effective to what extent...can any body tell me....does it bridge the gap of our low ram...
AND ANY OTHER DISADVANTAGE THAN REDUCING SD CARD LIFE
Click to expand...
Click to collapse
That why the requirement need class 10 SDcard

You can use CM7 that uses less RAM!.. I just went from CM10 to CM7 and it really is an improvement for ACE as it uses a bit less RAM and that is noticeable.

thanx but no cm7
Jimmyslam said:
You can use CM7 that uses less RAM!.. I just went from CM10 to CM7 and it really is an improvement for ACE as it uses a bit less RAM and that is noticeable.
Click to expand...
Click to collapse
thanks...but i dont want cm7 as i dont like it....i want it in a stock rom...btw thanx

Ashish924 said:
how to make virtual ram in galaxy ace rooted s5830.....running ics'ed by snowpluralism....
n do it helps in smooth runnings...
and any disadvantages:highfive:
Click to expand...
Click to collapse
there are quite a few apps for increasing the ram like ramexpander and swapper...
but before using these apps remember that the read and write speed of sd card(which is secondary storage) is vey less as compared to that of the internal ram.. and probably thats why ram is very expensive as compared to sd card...
so if you use these apps may take a bit longer to start and even the best of sd cards i.e. the class 10 one won't last longer than 6 months...

Increasing ram
Hi i install ram manager pro apk on gts5830i then i create a swap file 128mb using this apk, then on sd card i see swap file img does it mean my phone ram increased.... i didn't install any kernel for it... plz does tell me if it increase ram or not...

I tried something on a other phone from my neighbor. is a huawei with same specs than the galaxy ace..
I moved apps to SD card with link2SD and created a Swap file in the internal storage.
The internal storage is much faster than the SD card and much better for swap file.

sahil chandel said:
Hi i install ram manager pro apk on gts5830i then i create a swap file 128mb using this apk, then on sd card i see swap file img does it mean my phone ram increased.... i didn't install any kernel for it... plz does tell me if it increase ram or not...
Click to expand...
Click to collapse
What is RAM
Random Access Memory (RAM) is temporary data storage that the CPU uses during calculations. The more RAM a device has, the more calculated results the CPU can store - which means less time the CPU has to do the same thing over and over again. In other words, the CPU can check RAM to see if it has already made a particular calculation in the recent past. If it has, it can use the pre-computed results instead of wasting processing time recomputing the same calculation. In short, more RAM means a more efficient (and faster) device.
SWAP
What is SWAP
Swap is, in short, virtual RAM. With swap, a small portion of the hard drive is set aside and used like RAM. The computer will attempt to keep as much information as possible in RAM until the RAM is full. At that point, the computer will begin moving inactive blocks of memory (called pages) to the hard disk, freeing up RAM for active processes. If one of the pages on the hard disk needs to be accessed again, it will be moved back into RAM, and a different inactive page in RAM will be moved onto the hard disk ('swapped'). The trade off is disks and SD cards are considerably slower than physical RAM, so when something needs to be swapped, there is a noticeable performance hit.
Unlike traditional swap, Android's Memory Manager kills inactive processes to free up memory. Android signals to the process, then the process will usually write out a small bit of specific information about its state (for example, Google Maps may write out the map view coordinates; Browser might write the URL of the page being viewed) and then the process exits. When you next access that application, it is restarted: the application is loaded from storage, and retrieves the state information that it saved when it last closed. In some applications, this makes it seem as if the application never closed at all. This is not much different from traditional swap, except that Android apps are specially programed to write out very specific information, making Android's Memory Manager more efficient that swap.
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Credits go to CarlDeanCatabay

[Q] HTC desire C storage problem!!

when i read at this page.... gsmarena.com/htc_desire_c-4759.php
at the storage it has "4GB include" but the device has 90MB rom and 940MB memory...
anyone please explain that
p/s this is my first post and i'm from vietnam, sorry for my bad english.
hello all you guy :good:

Welcome to XDA
I don't exactly know how it works but you only get around 1GB of space you could actually use!
Sent from my TF300T using xda app-developers app

Usuasable memory..
You are right. Both the websites and the box in which the phone is shipped shows the internal memory to be 4GB. But in reality this storage space is also used to store the phone's software. So the 4GB is actually partitioned into two parts, one storing the software and another part as the actual usable memory which can be used by the user. So you get a little less than 1GB of internal memory.. around 935mb or something. To know more.. go to HTC's website.

actually its split in three parts
1 part for the OS,sense,etc
2 0.94 gb for apps
3 ~90mb for storage (media,pictures etc)

bogdy5 said:
actually its split in three parts
1 part for the OS,sense,etc
2 0.94 gb for apps
3 ~90mb for storage (media,pictures etc)
Click to expand...
Click to collapse
so part 1 take for 3GB??

apparently ICS+Sense 4.0+bloatware=3gb
it's like the galaxy s4, from 16gb you get ~10gb of user storage
imo this is just a marketing scheme something like internet speed ads. they say "internet speeds up to 150mbps" not 18mBps(even though it's the same thing) because ppl like big numbers ;the difference is you still have the same internet speed while with the phone the 4gb mem is a lie ....unless you format the whole internal memory and use the phone as a throwing weapon....

bogdy5 said:
apparently ICS+Sense 4.0+bloatware=3gb
it's like the galaxy s4, from 16gb you get ~10gb of user storage
imo this is just a marketing scheme something like internet speed ads. they say "internet speeds up to 150mbps" not 18mBps(even though it's the same thing) because ppl like big numbers ;the difference is you still have the same internet speed while with the phone the 4gb mem is a lie ....unless you format the whole internal memory and use the phone as a throwing weapon....
Click to expand...
Click to collapse
thank bro

bogdy5 said:
apparently ICS+Sense 4.0+bloatware=3gb
it's like the galaxy s4, from 16gb you get ~10gb of user storage
imo this is just a marketing scheme something like internet speed ads. they say "internet speeds up to 150mbps" not 18mBps(even though it's the same thing) because ppl like big numbers ;the difference is you still have the same internet speed while with the phone the 4gb mem is a lie ....unless you format the whole internal memory and use the phone as a throwing weapon....
Click to expand...
Click to collapse
and even though it has 512 MB RAM, we just get only 414 MB

Actually it is 512 or 414 mob of RAM..?

akashgartia said:
Actually it is 512 or 414 mob of RAM..?
Click to expand...
Click to collapse
Our phone has 512mb RAM but the android system itself uses ~100mb so we get to use only 414mb